A453-GR660-STUD-BOLT

ASTM A453/A453M Grade 660 Class A/B/C/D Stainless Steel Bolting for High Temperature Applications

Standard Specification for High-Temperature Bolting Materials, with Expansion
Coefficients Comparable to Austenitic Stainless Steels1

We supply A453 Stud Bolts, Hex Bolts, Heavy Hex Bolts, Socket Head Cap Screws, Threaded Rods, Nuts & Washers as per ASTM A453 Grade 600 Class A/B/C & D. We produce these Grade 660 Bolts from 3/8″ to 4″ in imperial and upto M100 in metric sizes. Larger size Bolts can be made to order as per request. We also undertake custom made boltings in A453 Gr 660 as per drawing. We stock premium and surplus bar stock in Grade 660 (UNS S66286 ; Alloy A286) for quick manufacturing and shorter delivery periods. These ASTM A453 Grade 660 Class A/B/C/D Bolts are supplied with EN 10204 Type 3.1 MTC. We offer Rupture Test Facility for sufficient quantity order.

ASTM A453 Grade 660 Tensile Class

Property	Description
Class A	…
Class B	…
Class C	…
Class D	…

ASTM A453 Grade 660 Chemical Composition (UNS S66286)

Element	Content %
Grade 660 UNS S66286
Carbon	0.08 max
Manganese	2.00 max
Phosphorus	0.04 max
Sulfur	0.03 max
Silicon	1.00 max
Nickel	24.00 – 27.00
Chromium	13.50 – 16.00
Molybdenum	1.00 – 1.50
Titanium	1.90 – 2.35
Aluminum	0.35 max
Vanadium	0.10 – 0.50
Boron	0.001 – 0.010

ASTM A453 Grade 660 Class A/B/C/D Mechanical Properties

Grade	Class	Tensile Strength	Yield Strength	Elongation in 4D, min, %	Reduction of Area, min, %	Brinell Hardness Number	Approximate Rockwell Hardness, B & C
Ksi	Mpa	Ksi	Mpa	min	max
Grade 660	A, B and C	130	895	85	585	15	18	248-341	24 HRC	37 HRC
Grade 660	D	130	895	105	725	15	18	248-341	24 HRC	35 HRC

ASTM A453 Grade 660 Class A/B/C/D Heat Treatment Requirements

Grade	Class	Solution Treatment	Hardening Treatment
Grade 660	A	1650 +/- 25° F [900 +/- 14°C], hold 2 hr, min and liquid quench	1325 +/- 25° F [720 +/- 14°C], hold 16 hr, air cool
Grade 660	B	1800 +/- 25° F [980 +/- 14°C], hold 1 hr, min and liquid quench	1325 +/- 25° F [720 +/- 14°C], hold 16 hr, air cool
Grade 660	C	1800 +/- 25° F [980 +/- 14°C], hold 1 hr, min and oil quench	1425 +/- 25° F [775 +/- 14°C], hold 16 hr, air cool, followed by 1200 +/- 25°F [650 +/- 14°C], air cool
Grade 660	D	1650 +/- 25° F [900 +/- 14°C], hold 2 hr, min and liquid quench 1800 +/- 25° F [980 +/- 14°C], hold 1 hr, min and liquid quench	1325 +/- 25° F [720 +/- 14°C], hold 16 hr, air cool, If required to achieve properties, second age: 1200 +/- 25°F [650 +/- 14°C], air cool

ASTM A453 Grade 660 Class A/B/C/D Stress Rupture Requirements

Grade	Class	Test Temperature	Stress, Min	Time to Rupture, min, hA	Elongation, min, %
°F	°C	Ksi	Mpa
Grade 660	A, B and C	1200	650	56	385	100	5

Note: The combination bar specimen shall be tested continuously at the temperature and at the minimum stress specified or at a greater stress and shall rupture in a time not less than than specified.

ASTM A453 Grade 660 Class A/B/C/D Marking Requirements

Grade	Class A	Class B	Class C	Class D
Grade 660	BPF 660A	BPF 660B	BPF 660C	BPF 660D NR

Stud bolts, a term used for cut-to-length all thread rod, are used for: bolting together flanges, anchor bolting, as well as general fastening. include
Hex Bolts ,Heavy Hex Bolts,Hollow Hex Bolts,Hollow Allen Bolts,Machine Bolts,Socket Head Bolts,Hex Flange Bolts,Lag bolts ,J bolts,shoulder bolts,
U Bolts,Hanger Bolts,Carriage Bolts ,Allen Bolts.

Stud bolt Material: :

Stud bolt Material:
ASTM A193/A320 – B6, B7, B7M, L7, L7M, B16, L43, B8, B8M, B8T, B8C, B8R, B8S
ASTM A453, A286 – 660A, 660B, 660C, 660D
UNS S32760 / ASTM A182 F55
Alloy 718 ,UNS N07718 bolt,Inconel 718 bolt
Alloy 601 UNS N06601 bolt,Inconel 601 bolt
Alloy 625 UNS N06625 bolt,Inconel 625 bolt
Alloy 925 UNS N9925 bolt,Inconel 925 bolt
MONEL 400
MONEL 500
DUPLEX
SUPERDUPLEX
ASTM F467
ASTM 468

Dimensions :  Metric Size M10 to M100 Imperial Size 3/8 to 8″, etc.

Standard : ASME,BS,DIN,ISO,UNI,DIN-EN, etc.

Thread Type : Fully Threaded Hex Bolts,Partial Threaded Hex Bolts, Metric Hex Bolts, Imperial Hex BoltsF), Raised Face (RF), Ring Type Joint (RTJ)

Hex Bolts Standards

ASME B18.2.1	3/8 inch to 3 inch
BS 1769	½ inch to 2 inch
ASME B18.2.3.6M	M12 to M36
ASME B18.2.3.7M	M16 to M36
DIN 6914	M12 to M36
ISO 7412	M12 to M36
UNI 5712	M12 to M36
DIN-EN 14399-4	M12 to M36

Download the detail stud weight list ,,nut weight list from below link.

STUD WEIGHT LIST

 

Length	Stud Bolt & Heavy Hex Nut Sizes (Weights in Kilograms)
	M8	M10	M12	M14	M16	M18	M20	M22	M24	M27	M30	M33	M36	M39
50mm	0.028	0.053	0.076	0.112	0.147	0.198	0.261	0.318	0423	0.593	0.801	1.009	1.319	1.655
55mm	0.030	0.055	0.079	0.117	0.153	0.206	0.272	0.331	0.438	0.612	0.824	1.037	1.354	1.706
60mm	0.032	0.058	0.083	0.121	0.160	0.215	0.282	0.343	0.453	0.631	0.848	1.066	1.390	1.748
65mm	0.033	0.060	0.086	0.126	0.166	0.223	0.292	0.356	0.468	0.650	0.871	1.095	1.425	1.790
70mm	0.035	0.063	0.090	0.131	0.173	0.231	0.302	0.369	0.483	0.670	0.894	1.123	1.460	1.832
75mm	0.036	0.065	0.093	0.136	0.180	0.239	0.313	0.382	0.498	0.689	0.918	1.152	1.496	1.874
80mm	0.038	0.068	0.097	0.141	0.186	0.247	0.323	0.395	0.512	0.708	0.941	1.181	1.531	1.916
85mm	0.039	0.070	0.101	0.146	0.193	0.256	0.333	0.407	0.527	0.727	0.964	1.209	1.566	1.957
90mm	0.041	0.073	0.104	0.151	0.199	0.264	0.344	0.420	0.542	0.747	0.988	1.238	1.601	1.999
95mm	0.042	0.075	0.108	0.156	0.206	0.272	0.354	0.433	0.557	0.766	1.011	1.267	1.637	2.041
100mm	0.044	0.077	0.111	0.161	0.212	0.280	0.364	0.446	0.572	0.785	1.034	1.295	1.672	2.083
105mm	0.045	0.080	0.115	0.165	0.219	0.288	0.375	0.459	0.587	0.804	1.058	1.324	1.707	2.125
110mm	0.047	0.082	0.118	0.170	0.226	0.296	0.385	0.471	0.602	0.824	1.081	1.353	1.743	2.167
115mm	0.048	0.085	0.122	0.175	0.232	0.305	0.395	0.484	0.617	0.843	1.104	1.381	1.778	2.209
120mm	0.050	0.087	0.125	0.180	0.239	0.313	0.405	0.497	0.632	0.862	1.127	1.410	1.813	2.250
125mm	0.052	0.090	0.129	0.185	0.245	0.321	0.416	0.510	0.647	0.881	1.151	1.439	1.849	2.292
130mm	0.053	0.092	0.132	0.190	0.252	0.329	0.426	0.523	0.661	0.901	1.174	1.467	1.884	2.334
135mm	0.055	0.095	0.136	0.195	0.258	0.337	0.436	0.535	0.676	0.820	1.197	1.496	1.919	2.376
140mm	0.056	0.097	0.139	0.200	0.265	0.346	0.447	0.548	0.691	0.939	1.221	1.525	1.954	2.418
145mm	0.058	0.100	0.143	0.205	0.272	0.354	0.457	0.561	0.706	0.958	1.244	1.553	1.990	2.460
150mm	0.059	0.102	0.146	0.210	0.278	0.362	0.467	0.574	0.721	0.978	1.267	1.582	2.025	2.502
155mm	0.061	0.104	0.150	0.214	0.285	0.370	0.478	0.587	0.736	0.997	1.291	1.611	2.060	2.543
160mm	0.062	0.107	0.153	0.219	0.291	0.378	0.488	0.599	0.751	1.016	1.314	1.639	2.096	2.585
165mm	0.064	0.109	0.157	0.224	0.298	0.387	0.498	0.612	0.766	1.035	1.337	1.668	2.131	2.627
170mm	0.065	0.112	0.160	0.229	0.304	0.395	0.508	0.625	0.781	1.055	1.361	1.697	2.166	2.669
175mm	0.067	0.114	0.164	0.234	0.311	0.403	0.519	0.638	0.796	1.074	1.384	1.725	2.202	2.711
180mm	0.069	0.117	0.168	0.239	0.318	0.411	0.529	0.651	0.810	1.093	1.407	1.754	2.237	2.753
185mm	0.070	0.119	0.171	0.244	0.324	0.419	0.539	0.663	0.825	1.112	1.430	1.783	2.272	2.794
190mm	0.072	0.122	0.175	0.249	0.331	0.427	0.550	0.676	0.840	1.132	1.454	1.811	2.307	2.836
195mm	0.073	0.124	0.178	0.254	0.337	0.436	0.560	0.689	0.855	1.151	1.477	1.840	2.343	2.878
200mm	0.075	0.126	0.182	0.258	0.344	0.444	0.570	0.702	0.870	1.170	1.500	1.869	2.378	2.920
205mm	0.076	0.129	0.185	0.263	0.350	0.452	0.581	0.715	0.885	1.189	1.524	1.897	2.413	2.962
210mm	0.078	0.131	0.189	0.268	0.357	0.460	0.591	0.727	0.900	1.209	.547	1.926	2.449	3.004
215mm	0.079	0.134	0.192	0.273	0.364	0.468	0.601	0.740	0.915	1.228	1.570	1.955	2.484	3.046
220mm	0.081	0.136	0.196	0.278	0.370	0.477	0.611	0.753	0.930	1.247	1.594	1.983	2.519	3.087
225mm	0.082	0.139	0.199	0.283	0.377	0.485	0.622	0.766	0.945	1.266	1.617	2.012	2.555	3.129
230mm	0.084	0.141	0.203	0.288	0.383	0.493	0.632	0.779	0.959	1.286	1.640	2.041	2.590	3.171
235mm	0.086	0.144	0.206	0.293	0.390	0.501	0.642	0.791	0.974	1.305	1.664	2.069	2.625	3.213
240mm	0.087	0.146	0.210	0.298	0.396	0.509	0.653	0.804	0.989	1.324	1.687	2.098	2.660	3.255
245mm	0.089	0.148	0.213	0.302	0.403	0.517	0.663	0.817	1.004	1.343	1.710	2.127	2.696	3.297
250mm	0.090	0.151	0.217	0.307	0.410	0.526	0.673	0.830	1.019	1.363	1.734	2.156	2.731	3.339
255mm	0.092	0.153	0.220	0.312	0.416	0.534	0.684	0.843	1.034	1.382	1.757	2.184	2.766	3.380
260mm	0.093	0.156	0.224	0.317	0.423	0.542	0.694	0.855	1.049	1.401	1.780	2.213	2.802	3.422
265mm	0.095	0.158	0.227	0.322	0.429	0.550	0.704	0.868	1.064	1.420	1.803	2.242	2.837	3.464
270mm	0.096	0.161	0.231	0.327	0.436	0.558	0.714	0.881	1.079	1.440	1.827	2.270	2.872	3.506
275mm	0.098	0.163	0.234	0.332	0.442	0.567	0.725	0.894	1.094	1.459	1.850	2.299	2.908	3.548
280mm	0.099	0.166	0.238	0.337	0.449	0.575	0.735	0.907	1.108	1.478	1.873	2.328	2.943	3.590
285mm	0.101	0.168	0.242	0.342	0.455	0.583	0.745	0.919	1.123	1.497	1.897	2.356	2.978	3.631
290mm	0.102	0.170	0.245	0.346	0.462	0.591	0.756	0.932	1.138	1.517	1.920	2.385	3.013	3.673
295mm	0.104	0.173	0.249	0.351	0.469	0.599	0.766	0.945	1.153	1.536	1.943	2.414	3.049	3.715
300mm	0.106	0.175	0.252	0.356	0.475	0.608	0.776	0.958	1.168	1.555	1.967	2.442	3.084	3.757
305mm	0.107	0.178	0.256	0.361	0.482	0.616	0.787	0.971	1.183	1.574	1.990	2.471	3.119	3.799
310mm	0.109	0.180	0.259	0.366	0.488	0.624	0.797	0.983	1.198	1.594	2.013	2.500	3.155	3.841
315mm	0.110	0.183	0.263	0.371	0.495	0.632	0.807	0.996	1.213	1.613	2.037	2.528	3.190	3.883
320mm	0.112	0.185	0.266	0.376	0.501	0.640	0.817	1.009	1.228	1.632	2.060	2.557	3.225	3.924
325mm	0.113	0.188	0.270	0.381	0.508	0.648	0.828	1.022	1.243	1.651	2.083	2.586	3.261	3.966
330mm	0.115	0.190	0.273	0.386	0.515	0.657	0.838	1.035	1.257	1.671	2.106	2.614	3.296	4.008
335mm	0.116	0.192	0.277	0.390	0.521	0.665	0.848	1.047	1.272	1.690	2.130	2.643	3.331	4.050
340mm	0.118	0.195	0.280	0.395	0.528	0.673	0.859	1.060	1.287	1.709	2.153	2.672	3.366	4.092
345mm	0.119	0.197	0.284	0.400	0.534	0.681	0.869	1.073	1.302	1.728	2.176	2.700	3.402	4.134
350mm	0.121	0.200	0.287	0.405	0.541	0.689	0.879	1.086	1.317	1.748	2.200	2.729	3.437	4.176
355mm	0.123	0.202	0.291	0.410	0.547	0.698	0.890	1.099	1.332	1.767	2.223	2.758	3.472	4.217
360mm	0.124	0.205	0.294	0.415	0.554	0.706	0.900	1.111	1.347	1.786	2.246	2.786	3.508	4.259
365mm	0.126	0.207	0.298	0.420	0.561	0.714	0.910	1.124	1.362	1.805	2.270	2.815	3.543	4.301
370mm	0.127	0.210	0.301	0.425	0.567	0.722	0.920	1.137	1.377	1.825	2.293	2.844	3.578	4.343
375mm	0.129	0.212	0.305	0.430	0.574	0.730	0.931	1.150	1.392	1.844	2.316	2.872	3.614	4.385
380mm	0.130	0.214	0.309	0.434	0.580	0.738	0.941	1.163	1.406	1.863	2.340	2.901	3.649	4.427
385mm	0.132	0.217	0.312	0.439	0.587	0.747	0.951	1.175	1.421	1.882	2.363	2.930	3.684	4.468
390mm	0.133	0.219	0.316	0.444	0.593	0.755	0.962	1.188	1.436	1.902	2.386	2.958	3.719	4.510
395mm	0.135	0.222	0.319	0.449	0.600	0.763	0.972	1.201	1.451	1.921	2.409	2.987	3.755	4.552
400mm	0.136	0.224	0.323	0.454	0.607	0.771	0.982	1.214	1.466	1.940	2.433	3.016	3.790	4.594
405mm	0.138	0.227	0.326	0.459	0.613	0.779	0.993	1.227	1.481	1.959	2.456	3.044	3.825	4.636
410mm	0.140	0.229	0.330	0.464	0.620	0.788	1.003	1.239	1.496	1.979	2.479	3.073	3.861	4.678
415mm	0.141	0.232	0.333	0.469	0.626	0.796	1.013	1.252	1.511	1.998	2.503	3.102	3.896	4.720
420mm	0.143	0.234	0.337	0.474	0.633	0.804	1.023	1.265	1.526	2.017	2.526	3.130	3.931	4.761
425mm	0.144	0.236	0.340	0.478	0.639	0.812	1.034	1.278	1.541	2.036	2.549	3.159	3.967	7.803
430mm	0.146	0.239	0.344	0.483	0.646	0.820	1.044	1.291	1.555	2.056	2.573	3.188	4.002	4.845
435mm	0.147	0.241	0.347	0.488	0.653	0.828	1.054	1.303	1.570	2.075	2.596	3.216	4.037	4.887
440mm	0.149	0.244	0.351	0.493	0.659	0.837	1.065	1.316	1.585	2.094	2.619	3.245	4.072	4.929
445mm	0.150	0.246	0.354	0.498	0.666	0.845	1.075	1.329	1.600	2.113	2.643	3.274	4.108	4.971
450mm	0.152	0.249	0.358	0.503	0.672	0.853	1.085	1.342	1.615	2.133	2.666	3.302	4.143	5.013
455mm	0.153	0.251	0.361	0.508	0.679	0.861	1.096	1.355	1.630	2.152	2.689	3.331	4.178	5.054
460mm	0.155	0.254	0.365	0.513	0.685	0.869	1.106	1.367	1.645	2.171	2.713	3.360	4.214	5.096
465mm	0.157	0.256	0.368	0.518	0.692	0.878	1.116	1.380	1.660	2.190	2.736	3.388	4.249	5.138
470mm	0.158	0.258	0.372	0.522	0.699	0.886	1.126	1.393	1.675	2.210	2.759	3.417	4.284	5.180
475mm	0.160	0.261	0.375	0.527	0.705	0.894	1.137	1.406	1.690	2.229	2.782	3.446	4.320	5.222
480mm	0.161	0.263	0.379	0.532	0.712	0.902	1.147	1.419	1.704	2.248	2.806	3.474	4.355	5.264
485mm	0.163	0.266	0.383	0.537	0.718	0.910	1.157	1.431	1.719	2.267	2.829	3.503	4.390	5.305
490mm	0.164	0.268	0.386	0.542	0.725	0.919	1.168	1.444	1.734	2.287	2.852	3.532	4.425	5.347
495mm	0.166	0.271	0.390	0.547	0.731	0.927	1.178	1.457	1.749	2.306	2.876	3.560	4.461	5.389
500mm	0.167	0.273	0.393	0.552	0.738	0.935	1.188	1.470	1.764	2.325	2.899	3.589	4.496	5.431

Length	Stud Bolt & Heavy Hex Nut Sizes (Weights in Kilograms)
	M42	M45	M48	M52	M56	M60	M64	M68	M72	M76	M80	M85	M90	M95
50mm	2.083	2.546	3.087	3.710	4.414	5.161	6.056	6.998	8.015	9.154	10.304	11.704	14.420	16.171
55mm	2.132	2.602	3.151	3.787	4.501	5.261	6.172	7.129	8.163	9.321	10.484	11.909	14.650	16.429
60mm	2.182	2.659	3.216	3.864	4.589	5.361	6.287	7.261	8.310	9.488	10.664	12.113	14.880	16.686
65mm	2.231	2.716	3.280	3.941	4.676	5.461	6.403	7.393	8.458	9.656	10.845	12.318	15.110	16.943
70mm	2.280	2.773	3.345	4.018	4.764	5.561	6.518	7.525	8.605	9.823	11.025	15.522	15.340	17.200
75mm	2.330	2.830	3.410	4.095	4.851	5.662	6.634	7.656	8.753	9.990	11.205	12.727	15.571	17.457
80mm	2.379	2.887	3.474	4.172	4.938	5.762	6.750	7.788	8.900	10.158	11.386	12.931	15.801	17.714
85mm	2.428	2.944	3.539	4.249	5.026	5.862	6.865	7.920	9.048	10.325	11.566	13.135	16.031	17.971
90mm	2.477	3.001	3.604	4.326	5.113	5.962	6.981	8.052	9.195	10.492	11.746	13.340	16.261	18.229
95mm	2.527	3.058	3.668	4.403	5.201	6.062	7.096	8.183	9.343	10.660	11.927	13.544	16.491	18.486
100mm	2.576	3.115	3.733	4.480	5.288	6.162	7.212	8.315	9.490	10.827	12.107	13.749	16.721	18.743
105mm	2.625	3.172	3.798	4.557	5.375	6.262	7.328	8.447	9.638	10.994	12.287	13.953	16.951	19.000
110mm	2.675	3.229	3.862	4.634	5.463	6.362	7.443	8.579	9.785	11.160	12.468	14.158	17.181	19.257
115mm	2.724	3.286	3.927	4.711	5.550	6.462	7.559	8.710	9.933	11.329	12.648	14.362	17.411	19.514
120mm	2.773	3.343	3.992	4.788	5.638	6.562	7.674	8.842	10.080	11.496	12.828	14.567	17.641	19.771
125mm	2.823	3.400	4.056	4.865	5.725	6.663	7.790	8.974	10.228	11.664	13.009	14.771	17.871	20.028
130mm	2.872	3.457	4.121	4.942	5.812	6.763	7.906	9.106	10.375	11.831	13.189	14.975	18.101	20.286
135mm	2.921	3.514	4.186	5.019	5.900	6.863	8.021	9.237	10.523	11.998	13.370	15.180	18.331	20.543
140mm	2.970	3.571	4.250	5.096	5.987	6.963	8.137	9.369	10.670	12.166	13.550	15.384	18.561	20.800
145mm	3.020	3.628	4.315	5.173	6.075	7.063	8.252	9.501	10.818	12.333	13.730	15.589	18.791	21.057
150mm	3.069	3.685	4.380	5.250	6.162	7.163	8.368	9.633	10.965	12.501	13.911	15.793	19.021	21.314
155mm	3.118	3.741	4.444	5.327	6.249	7.263	8.484	9.764	11.113	12.668	14.091	15.998	19.251	21.571
160mm	3.168	3.798	4.509	5.404	6.337	7.363	8.599	9.896	11.260	12.835	14.271	16.202	19.481	21.828
165mm	3.217	3.855	4.573	5.481	6.424	7.463	8.715	10.028	11.408	13.003	14.452	16.407	19.711	22.086
170mm	3.266	3.912	4.638	5.558	6.512	7.563	8.830	10.160	11.555	13.170	14.632	16.611	19.941	22.343
175mm	3.316	3.969	4.703	5.635	6.599	7.664	8.946	10.291	11.703	13.337	14.812	16.815	20.171	22.600
180mm	3.365	4.026	4.767	5.712	6.686	7.764	9.062	10.423	11.850	13.505	14.993	17.020	20.401	22.857
185mm	3.414	4.083	4.832	5.789	6.774	7.864	9.177	10.555	11.998	13.672	15.713	17.224	20.631	23.114
190mm	3.463	4.140	4.897	5.866	6.861	7.964	9.293	10.687	12.145	13.839	15.353	17.429	20.861	23.371
195mm	3.513	4.197	4.961	5.943	6.949	8.064	9.408	10.818	12.293	14.007	15.534	17.633	21.091	23.628
200mm	3.562	4.254	5.026	6.020	7.036	8.164	9.524	10.950	12.440	14.174	15.714	17.838	21.321	23.886
205mm	3.611	4.311	5.091	6.097	7.123	8.264	9.640	11.082	12.588	14.341	15.895	18.042	21.551	24.143
210mm	3.661	4.368	5.155	6.174	7.211	8.364	9.755	11.214	12.735	14.509	16.075	18.246	21.781	24.400
215mm	3.710	4.425	5.220	6.251	7.298	8.464	9.871	11.345	12.883	14.676	16.255	18.451	22.012	24.657
220mm	3.759	4.482	5.285	6.328	7.386	8.564	9.986	11.477	13.030	14.843	16.436	18.655	22.242	24.914
225mm	3.809	4.539	5.349	6.405	7.473	8.665	10.102	11.609	13.178	15.011	16.616	18.860	22.472	25.171
230mm	3.858	4.596	5.414	6.482	7.560	8.765	10.218	11.741	13.325	15.178	16.796	19.064	22.702	25.428
235mm	3.907	4.653	5.479	6.559	7.648	8.865	10.333	11.872	13.473	15.345	16.977	19.269	22.932	25.686
240mm	3.956	4.710	5.543	6.636	7.735	8.965	10.449	12.004	13.620	15.513	17.157	19.473	23.162	25.943
245mm	4.006	4.767	5.608	6.713	7.823	9.065	10.564	12.136	13.768	15.680	17.337	19.678	23.392	26.200
250mm	4.055	4.824	5.673	6.790	7.910	9.165	10.680	12.268	13.915	15.848	17.518	19.882	23.622	26.457
255mm	4.104	4.880	5.737	6.867	7.997	9.265	10.796	12.399	14.063	16.015	17.698	20.086	23.852	26.714
260mm	4.154	4.937	5.802	6.944	8.085	9.365	10.911	12.531	14.210	16.182	17.878	20.291	24.082	26.971
265mm	4.203	4.994	5.866	7.021	8.172	9.465	11.027	12.663	14.358	16.350	18.059	20.495	24.312	27.228
270mm	4.252	5.051	5.931	7.098	8.260	9.565	11.142	12.795	14.505	16.517	18.239	20.700	24.542	27.486
275mm	4.302	5.108	5.996	7.175	8.347	9.666	11.258	12.926	14.653	16.684	18.419	20.904	24.772	27.743
280mm	4.351	5.165	6.060	7.252	8.434	9.766	11.374	13.058	14.800	16.852	18.600	21.109	25.002	28.000
285mm	4.400	5.222	6.125	7.329	8.522	9.866	11.489	13.190	14.948	17.019	18.780	21.313	25.232	28.257
290mm	4.449	5.279	6.190	7.406	8.609	9.966	11.605	13.322	15.095	17.186	18.961	21.518	25.462	28.514
295mm	4.499	5.336	6.254	7.483	8.697	10.066	11.720	13.453	15.243	17.354	19.141	21.72	25.692	28.771
300mm	4.548	5.393	6.319	7.560	8.784	10.166	11.836	13.585	15.390	17.521	19.321	21.926	25.922	29.028
305mm	4.597	5.450	6.384	7.637	8.871	10.266	11.952	13.717	15.538	17.688	19.502	21.131	26.152	29.286
310mm	4.647	5.507	6.448	7.714	8.959	10.366	12.067	13.849	15.685	17.856	19.682	22.335	16.382	29.543
315mm	4.696	5.564	6.513	7.791	9.046	10.466	12.183	13.980	15.833	18.023	19.862	22.540	26.612	29.800
320mm	4.745	5.621	6.578	7.868	9.134	10.566	12.298	14.112	15.980	18.190	20.043	22.744	26.842	30.057
325mm	4.795	5.678	6.642	7.945	9.221	10.667	12.414	14.244	16.128	18.358	20.223	22.949	27.072	30.314
330mm	4.844	5.735	6.707	8.022	9.308	10.767	12.530	14.376	16.275	18.525	20.403	23.153	27.302	30.571
335mm	4.893	5.792	6.772	8.099	9.396	10.867	12.645	14.507	16.423	18.692	25.584	23.357	27.532	30.828
340mm	4.942	5.849	6.836	8.176	9.483	10.967	12.761	14.639	16.570	18.860	20.764	23.562	27.762	31.086
345mm	4.992	5.906	6.901	8.253	9.571	11.067	12.876	14.771	16.718	19.027	20.944	23.766	27.992	31.343
350mm	5.014	5.963	6.966	8.330	9.658	11.167	12.992	14.903	16.865	19.195	21.125	23.971	28.222	31.600
355mm	5.090	6.019	7.030	8.407	9.745	11.267	13.108	15.034	17.013	19.362	21.305	24.175	28.453	31.857
360mm	5.140	6.076	7.095	8.484	9.833	11.367	13.223	15.166	17.160	19.529	21.485	24.380	28.653	32.114
365mm	5.189	6.133	7.159	8.561	9.920	11.467	13.339	15.298	17.308	19.697	21.666	24.584	28.913	32.371
370mm	5.238	6.190	7.224	8.638	10.008	11.567	13.454	15.430	17.455	19.864	21.846	24.789	29.143	32.628
375mm	5.288	6.247	7.289	8.715	10.095	11.668	13.570	15.561	17.603	20.031	22.027	24.993	29.373	32.885
380mm	5.337	6.304	7.353	8.792	10.182	11.768	13.686	15.693	17.750	20.199	22.207	25.197	29.603	33.143
385mm	5.386	6.361	7.418	8.869	10.270	11.868	13.801	15.825	17.898	20.366	22.387	25.402	29.833	33.400
390mm	5.435	6.418	7.483	8.946	10.357	11.968	13.917	15.957	18.045	20.533	22.568	25.606	30.063	33.657
395mm	5.485	6.475	7.547	9.023	10.445	12.068	14.032	16.088	18.193	20.701	22.748	25.811	30.293	33.914
400mm	5.534	6.532	7.612	9.100	10.532	12.168	14.148	16.220	18.340	20.868	22.928	26.015	30.523	34.171
405mm	5.583	6.589	7.677	9.177	10.619	12.268	14.264	16.325	18.488	21.035	23.109	26.220	30.753	34.428
410mm	5.633	6.646	7.741	9.254	10.707	12.368	14.379	16.484	18.635	21.203	23.289	26.424	30.983	34.685
415mm	5.682	6.703	7.806	9.331	10.794	12.468	14.495	16.615	18.783	21.370	23496	26.629	31.213	34.943
420mm	5.731	6.760	7.871	9.408	10.882	12.568	14.610	16.747	18.930	21.537	23.650	26.833	31.443	35.200
425mm	5.781	6.817	7.935	9.485	10.969	12.669	14.726	16.879	19.078	21.705	23.830	27.037	31.673	35.457
430mm	5.830	6.874	8.000	9.562	11.056	12.769	14.842	17.011	19.225	21.872	24.010	27.242	31.903	35.714
435mm	5.879	6.931	8.065	9.639	11.144	12.869	14.957	17.142	19.373	22.039	24.191	27.446	32.133	35.971
440mm	5.928	6.988	8.129	9.716	11.231	12.969	15.073	17.274	19.520	22.207	24.371	27.651	32.636	36.228
445mm	5.978	7.045	8.194	9.793	11.319	13.069	15.188	17.406	19.668	22.374	24.551	27.855	32.593	36.485
450mm	6.027	7.102	8.259	9.870	11.406	13.169	15.304	17.538	19.815	22.542	24.732	28.060	32.823	36.743
455mm	6.076	7.158	8.323	9.947	11.493	13.269	15.420	17.669	19.963	22.709	24.912	28.264	33.053	37.000
460mm	6.126	7.215	8.388	10.024	11.581	13.369	15.353	17.801	20.110	22.876	25.093	28.468	33.283	37.257
465mm	6.175	7.272	8.452	10.101	11.668	13.469	15.651	17.933	20.258	23.044	25.273	28.673	33.513	37.514
470mm	6.224	7.329	8.517	10.178	11.756	13.569	15.766	18.065	20.405	23.211	25.453	28.877	33.743	37.771
475mm	6.274	7.386	8.582	10.255	11.843	13.670	15.882	18.196	20.553	23.378	25.634	29.082	33.973	38.028
480mm	6.323	7.443	8.646	10.332	11.930	13.770	15.998	18.328	20.700	23.546	25.814	29.286	34.203	38.285
485mm	6.372	7.500	8.711	10.409	12.018	13.870	16.113	18.460	20.848	23.713	25.994	29.491	34.433	38.543
490mm	6.421	7.557	8.776	10.486	12.105	13.970	16.229	18.592	20.995	23.880	26.175	29.695	34.663	38.800
495mm	6.471	7.614	8.840	10.563	12.193	14.070	16.344	18.723	21.143	24.048	26.355	29.900	34.893	39.057
500mm	6.520	7.671	8.905	10.640	12.280	14.170	16.460	18.855	21.290	24.215	26.535	30.104	35.124	39.314

Frequently Asked Questions

Define of fasteners?
Fasteners are tools that hold two pieces together in a non-permanent joint. For example, using a deck screw to attach a deck board to a ledger board creates a joint. Because in theory, these two pieces can be separated, they are considered non-permanent. Unless you are welding, you will most likely be creating non-permanent joints using your drill or screwdriver.

What is the difference between the grades in Metric and Imperial bolts?

The main difference between the grades in metric and imperial bolts is how each is measured. Metric bolt heads are measured in millimeters while Imperial (or standard) are measured in inches or fractions of inches.

Which fasteners meet my ASTM code?

The most common ASTM codes referenced for fasteners are ASTM A36, ASTM A47, ASTM A48, ASTM A153, ASTM A193, ASTM A194, ASTM A307, ASTM A320, ASTM A325, ASTM A354 and ASTM A449. Mudge is able to supply fasteners to meet these ASTM specifications and others. If you’d like to download individual ASTM standards documents,

What is the difference between a bolt and a screw?

Traditionally, the difference between a bolt and a screw has been defined as a screw is threaded to the head whereas a bolt has a plain shank. However, using this definition now could cause problems if this assumption is made when specifying a fastener. The definition used by the Industrial Fastener Institute (IFI) is that screws are used with tapped holes, and bolts are used with nuts.

Obviously, a standard ‘bolt’ can be used in a tapped hole or with a nut. The IFI maintains that since this type of fastener is normally used with a nut, then it is a bolt. Although certain short length bolts are threaded to the head, they are still bolts if the main usage is with nuts. Screws are fastener products such as wood screws, lag screws and the various types of tapping screws. The IFI terminology and definition has been adopted by ASME and ANSI.

What are the marks shown on the head of a bolt?

Fastener standards specify two types of marks to be on the head of a bolt. The manufacturer’s mark is a symbol identifying the manufacturer (or importer). This is the organization that accepts the responsibility for ensuring that the fastener meets specified requirements. The grade mark is a standardized mark that identifies the material properties that the fastener meets. For example, 307A on a bolt head indicates that the fastener properties conform to the ASTM A307 Grade A standard. The bolt head shown at the side indicates that it is of property class 8.8 and remain is the manufacturer’s mark.

Both marks are usually located on the top of the bolt head, and most standards indicate that the marks can be raised or depressed. Raised marks are usually preferred by manufacturers because these can only be added during the forging process whereas depressed marks can subsequently be added (possibly with illegitimate marks).

Whats common surface treatment methods for fastener?

1. Zinc plating
2. Surface phosphating
3. Blackening (oxidation)
4. Cadmium plating
5. Chromium plating
6. Silver and nickel plating on the surface
7. Galvanizing (hot dip galvanizing and zinc infiltration)
8. Fluorocarbon coated,Xylan Fluoropolymer Coated
9 PTFE