Cap Screws

Button Head Cap Screws

Inch Dimensions p/ANSI B18.3 : Metric Dimensions p/DIN 912 (sockets) DIN 7380 (button) DIN7991(flat) DIN

Inch Sizes

Available off the shelf in 18-8 (304), 316, A286, Brass & Alloy Steel

Diameter

#0

#2

#4

#6

#8

#10

1/4"

5/16"

3/8"

1/2"

Length Range

1/8" to 1"

1/8" to 1.50"

1/8" to 2"

3/16" to 4"

3/16" to 5"

1/2" to 6"

Metric Sizes

Available off the shelf in A2, A4 & A286 and Alloy Steel.

Diameter

M3

M4

M5

M6

M8

M10

Length Range

4mm to 30mm

10mm to 40mm

10mm to 60mm

8mm to 60mm

10mm to 60mm

16mm to 60mm

See full dimensional data

Nominal Size (Basic Screw Diameter)	A		H		S	M	J		T	F
	Head Diameter		Head Height		Head Side Height	Spline Socket Size	Hexagon Socket Size		Key Engagement	Fillet Transition Diameter
	Max	Min	Max	Min	Ref	Nom	Nom		Min	Max	Min
0 (0.0600)	0.114	0.104	0.032	0.026	0.010	0.048		0.035	0.020	0.080	0.070
1 (0.0730)	0.139	0.129	0.039	0.033	0.010	0.060		0.050	0.028	0.093	0.083
2 (0.0860)	0.164	0.154	0.046	0.038	0.010	0.060		0.050	0.028	0.106	0.096
3 (0.0990)	0.188	0.176	0.052	0.044	0.010	0.072	1/16	0.062	0.035	0.119	0.109
4 (0.1120)	0.213	0.201	0.059	0.051	0.015	0.072	1/16	0.062	0.035	0.132	0.122
5 (0.1250)	0.238	0.226	0.066	0.058	0.015	0.096	5/64	0.078	0.044	0.145	0.135
6 (0.1380)	0.262	0.250	0.073	0.063	0.015	0.096	5/64	0.078	0.044	0.158	0.148
8 (0.1640)	0.312	0.298	0.087	0.077	0.015	0.111	3/32	0.094	0.052	0.194	0.184
10 (0.1900)	0.361	0.347	0.101	0.091	0.020	0.145	1/8	0.125	0.070	0.220	0.210
1/4 (0.2500)	0.437	0.419	0.132	0.122	0.031	0.183	5/32	0.156	0.087	0.290	0.280
5/16 (0.3125)	0.547	0.527	0.166	0.152	0.031	0.216	3/16	0.188	0.105	0.353	0.343
3/8 (0.3750)	0.656	0.636	0.199	0.185	0.031	0.251	7/32	0.219	0.122	0.415	0.405
1/2 (0.5000)	0.875	0.851	0.265	0.245	0.046	0.372	5/16	0.312	0.175	0.560	0.540
5/8 (0.6250)	1.000	0.970	0.331	0.311	0.062	0.454	3/8	0.375	0.210	0.685	0.665

GET A QUOTE

Custom lengths, larger diameters and materials like A286, Inconel 718, Monel, Beryllium Copper, Brass and more available upon request.

Hex Head Cap Screws

Inch Dimensions p/ANSI B18.6.3 : Metric Dimensions per DIN 931/933

Inch Sizes

Available off the shelf in 18-8 (304), 316, A286, Grade 5 & 8

Diameter

1/4

5/16

3/8

7/16

1/2

5/8

3/4

1

Length Range

3/8" to 10"

1/2" to 10"

1/2" to 14"

1/2" to 6"

3/4" to 18"

1" to 18"

2" to 10"

Metric Sizes

Available off the shelf in A2, A4, 8.8, 10.9, 12.9

Diameter

4mm

5mm

6mm

8mm

10mm

12mm

14mm

16mm

Length Range

6mm to 30mm

6mm to 70mm

8mm to 120mm

10mm to 150mm

12mm to 150mm

16mm to 150mm

20mm to 120mm

20mm x 150mm

See full dimensional data

	E		F			G		H			J	L		Y
Nominal Size or Basic Product Diameter	Body Diameter		Width Across Flats			Width Across Corners		Head Height			Wrenching Height	Thread Length for Screw Lengths 6 in. and Shorter / Over 6 in.		Transition Thread Length
	Max	Min	Basic	Max	Min	Max	Min	Basic	Max	Min	Min	Nom	Nom	Ref
1/4 0.2500	0.25	0.245	7/16	0.438	0.428	0.505	0.488	5/32	0.163	0.150	0.106	0.750	1.000	0.25
5/16 0.3125	0.3125	0.3065	1/2	0.500	0.489	0.577	0.557	13/64	0.211	0.195	0.14	0.875	1.125	0.278
3/8 0.3750	0.3750	0.3690	9/16	0.562	0.551	0.650	0.628	15/64	0.243	0.226	0.16	1.000	1.250	0.312
7/16 0.4375	0.4375	0.4305	5/8	0.625	0.612	0.722	0.698	9/32	0.291	0.272	0.195	1.125	1.375	0.357
1/2 0.5000	0.5000	0.4930	3/4	0.750	0.736	0.866	0.840	5/16	0.323	0.302	0.215	1.250	1.500	0.385
9/16 0.5625	0.5625	0.5545	13/16	0.812	0.798	0.938	0.910	23/64	0.371	0.348	0.25	1.375	1.625	0.417
5/8 0.6250	0.6250	0.6170	15/16	0.938	0.922	1.083	1.051	25/64	0.403	0.378	0.0269	1.500	1.750	0.455
3/4 0.7500	0.7500	0.7410	1-1/8	1.125	1.100	1.299	1.254	15/32	0.483	0.455	0.324	1.750	2.000	0.5
7/8 0.8750	0.8750	0.8660	1-5/16	1.312	1.285	1.516	1.465	35/64	0.563	0.531	0.378	2.000	2.250	0.556
1 1.0000	1.0000	0.9900	1-1/2	1.500	1.469	1.732	1.675	39/64	0.627	0.591	0.416	2.250	2.500	0.625

GET A QUOTE

Socket Head Cap Screws

Inch Dimensions p/ANSI B18.3 : Metric Dimensions p/DIN 912.

Inch Sizes

Available off the shelf in 18-8 (304), 316, A286, Brass & Alloy Steel.

Diameter

#0

#2

#4

#6

#8

#10

1/4"

5/16"

3/8"

1/2"

Length Range

1/8" to 1"

1/8" to 1.50"

1/8" to 2"

3/16" to 4"

3/16" to 5"

1/4" to 4"

1/2" to 6"

Metric Sizes

Available off the shelf in A2, A4 & A286 and Alloy Steel.

Diameter

M3

M4

M5

M6

M8

M10

Length Range

4mm to 30mm

10mm to 40mm

10mm to 60mm

8mm to 60mm

10mm to 60mm

16mm to 60mm

See full dimensional data

	D		A		H		C	J	T	G	K
Nominal Size (Basic Screw Diameter)	Body Diameter		Head Diameter		Head Height		Chamfer or Radius	Hexagon Socket Size	Key Engagement	Wall Thickness	Chamfer or Radius
	Max	Min	Max	Min	Max	Min	Max	Nom	Min	Min	Max
0 (0.0600)	0.0600	0.0568	0.096	0.091	0.060	0.057	0.004	... 0.050	0.025	0.02	0.007
1 (0.0730)	0.0730	0.0695	0.118	0.112	0.073	0.070	0.005	1/16 0.062	0.031	0.025	0.007
2 (0.0860)	0.0860	0.0822	0.140	0.134	0.086	0.083	0.008	5/64 0.078	0.038	0.029	0.007
3 (0.0990)	0.0990	0.0949	0.161	0.154	0.099	0.095	0.008	5/64 0.078	0.044	0.034	0.007
4 (0.1120)	0.1120	0.1075	0.183	0.176	0.112	0.108	0.009	3/32 0.094	0.051	0.038	0.008
5 (0.1250)	0.1250	0.1202	0.205	0.198	0.125	0.121	0.012	3/32 0.094	0.057	0.043	0.008
6 (0.1380)	0.1380	0.1329	0.226	0.218	0.138	0.134	0.013	7/64 0.109	0.064	0.047	0.008
8 (0.1640)	0.1640	0.1585	0.270	.0262	0.164	0.159	0.014	9/64 0.141	0.077	0.056	0.008
10 (0.1900)	0.1900	0.1840	0.312	0.303	0.190	0.185	0.018	5/32 0.156	0.09	0.065	0.008
1/4 (0.2500)	0.2500	0.2435	0.375	0.365	.0250	0.244	0.025	3/16 0.188	0.12	0.095	0.01
5/16 (0.3125)	0.3125	0.3053	0.469	0.457	0.312	0.306	0.033	1/4 0.250	0.151	0.119	0.01
3/8 (0.3750)	0.3750	0.3678	0.532	0.550	0.375	0.368	0.04	5/16 0.312	0.182	0.143	0.01
7/16 (0.4375)	0.4375	0.4294	0.656	0.642	0.438	0.430	0.047	3/8 0.375	0.213	0.166	0.015
1/2 (0.5000)	0.5000	0.4919	0.750	0.735	0.500	0.492	0.055	3/8 0.375	0.245	0.19	0.015
5/8 (0.6250)	0.6250	0.6163	0.938	0.921	0.625	0.616	0.07	1/2 0.500	0.307	0.238	0.015
3/4 (0.7500)	0.7500	0.7406	1.125	1.107	0.750	0.740	0.085	5/8 0.625	0.37	0.285	0.015
7/8 (0.8750)	0.8750	0.8647	1.312	1.293	0.875	0.864	0.1	3/4 0.750	0.432	0.333	0.02
1 (1.0000)	1.0000	0.9886	1.500	1.479	1.000	0.988	0.114	3/4 0.750	0.495	0.38	0.02

GET A QUOTE

Custom lengths, larger diameters and materials like A286, Inconel 718, Monel, Beryllium Copper, Brass and more available upon request.

Flat Socket Head Screws

Inch Dimensions p/ANSI B18.3 : Metric Dimensions p/DIN 912 (sockets) DIN 7380 (button) DIN7991 (flat) DIN

Inch Sizes

Available off the shelf in 18-8 (304), 316, A286, Brass & Alloy Steel

Diameter

#0

#2

#4

#6

#8

#10

1/4"

5/16"

3/8"

1/2"

Length Range

1/8" to 1"

1/8" to 1.50"

1/8" to 2"

3/16" to 4"

3/16" to 5"

1/4" to 5"

1/2" to 6"

Metric Sizes

All head styles available in 18-8 (A2), some in 316 (A4) and brass.

Diameter

M3

M4

M5

M6

M8

M10

Length Range

4mm to 30mm

10mm to 40mm

10mm to 60mm

8mm to 60mm

10mm to 60mm

16mm to 60mm

See full dimensional data

	D		A		H	P		M	J		T	F
Nominal Size (Basic Screw Diameter)	Body Diameter		Head Diameter		Head Height	Protrusion		Spline Socket Size	Hexagon Socket Size		Key Engage-ment	Fillet Transition Diameter
	Max	Min	Theo. Sharp Max	Abs., Min	Ref	Max	Min		Nominal		Min	Max
0 (0.0600)	0.0600	0.0568	0.138	0.117	0.044	0.036	0.026	0.048		0.035	0.025	0.072
1 (0.0730)	0.0730	0.0695	0.168	0.143	0.054	0.040	0.028	0.060		0.050	0.031	0.089
2 (0.0860)	0.0860	0.0822	0.197	0.168	0.064	0.043	0.031	0.060		0.050	0.038	0.106
3 (0.0990)	0.0990	0.0949	0.226	0.193	0.073	0.046	0.033	0.072	1/16	0.062	0.044	0.119
4 (0.1120)	0.1120	0.1075	0.255	0.218	0.083	0.049	0.036	0.072	1/16	0.062	0.055	0.136
5 (0.1250)	0.1250	0.1202	0.281	0.240	0.090	0.051	0.037	0.096	5/64	0.078	0.061	0.153
6 (0.1380)	0.1380	0.1329	0.307	0.263	0.097	0.052	0.037	0.096	5/64	0.078	0.066	0.168
8 (0.1640)	0.1640	0.1585	0.359	0.311	0.112	0.055	0.039	0.111	3/32	0.094	0.076	0.194
10 (0.1900)	0.1900	0.1840	0.411	0.359	0.127	0.058	0.041	0.145	1/8	0.125	0.087	0.220
1/4 (0.2500)	0.2500	0.2435	0.531	0.480	0.161	0.064	0.043	0.183	5/32	0.156	0.111	0.280
5/16 (0.3125)	0.3125	0.3053	0.656	0.600	0.198	0.070	0.047	0.216	3/16	0.188	0.135	0.343
3/8 (0.3750)	0.3750	0.3678	0.781	0.720	0.234	0.076	0.050	0.251	7/32	0.219	0.159	0.405
7/16 (0.4375)	0.4375	0.4294	0.844	0.781	0.234	0.092	0.063	0.291	1/4	0.250	0.159	0.468
1/2 (0.5000)	0.5000	0.4919	0.938	0.872	0.251	0.119	0.870	0.372	5/16	0.312	0.172	0.530
5/8 (0.6250)	0.6250	0.6163	1.188	1.112	0.324	0.135	0.096	0.454	3/8	0.375	0.220	0.655
3/4 (0.7500)	0.7500	0.7406	1.438	1.355	0.396	0.150	0.105	0.454	1/2	0.500	0.220	0.780
7/8 (0.8750)	0.8750	0.8647	1.688	1.604	0.468	0.165	0.118		9/16	0.562	0.248	0.905
1 (1.0000)	1.0000	0.9886	1.938	1.841	0.540	0.181	0.130		5/8	0.625	0.297	1.030

GET A QUOTE

Custom lengths, larger diameters and materials like A286, Inconel 718, Monel, Beryllium Copper, Brass and more available upon request.

Most available in 18-8, 316, 410, Grade 5 & 8, A286, Monel, Alloy 20, brass, bronze and other materials.

Button Head Cap Screws

Hex Head Cap Screws

Socket Head Cap Screws

Flat Socket Head Screws

Retaining Rings, Groove Pins, Spring Pins, we are much more than threaded product!

Cap Screws

Most available in 18-8, 316, 410, Grade 5 & 8, A286, Monel, Alloy 20, brass, bronze and other materials.

Button Head Cap Screws

Button Head Cap Screws Dimensional Data

Hex Head Cap Screws

Hex Head Cap Screws Dimensional Data

Socket Head Cap Screws

Socket Head Cap Screws Dimensional Data

Flat Socket Head Screws

Flat Socket Head Cap Screws Dimensional Data

Retaining Rings, Groove Pins, Spring Pins, we are much more than threaded product!