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Hexagon Socket Head Cap Screws [Table 1] (ASTM A574 F837)

Experience superior performance and reliability with Hexagon Socket Head Cap Screws compliant with ASME B 18.3 - 2012 standards. Crafted from premium materials, these screws ensure secure and durable fastening in diverse applications.

Model:ASME B 18.3

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Product Description

Premium Quality: ASME B 18.3 - 2012 compliant Hexagon Socket Head Cap Screws, crafted with precision using premium materials like ASTM A574 and F837, ensure superior performance and longevity in diverse applications.

Robust Construction: Engineered with a robust design, these screws offer exceptional strength and reliability, making them ideal for high-stress environments and heavy-duty applications.

Secure Fastening: Featuring a hexagon socket head design, these screws provide a secure grip and prevent stripping, ensuring a tight and reliable fastening solution.

Wide Application: Suitable for a wide range of industries including construction, automotive, machinery, and more, these screws offer versatility and reliability for various fastening needs.

Size

10#

12#

1/4

5/16

d	Screw Diameter
PP	UNC
	UNF
	UNEF
d_s	max=nominal size
	min
d_k ^①	max
	min
k	max
	min
s	Nominal Size
t	min
b	min
c	chamfer or radius	max
r	chamfer or radius	max
w	min

0.06	0.073	0.086	0.099	0.112	0.125	0.138	0.164	0.19	0.216	0.25	0.3125
-	64	56	48	40	40	32	32	24	24	20	18
80	72	64	56	48	44	40	36	32	28	28	24
-	-	-	-	-	-	-	-	-	32	32	32
0.06	0.073	0.086	0.099	0.112	0.125	0.138	0.164	0.19	0.216	0.25	0.3125
0.0568	0.0695	0.0822	0.0949	0.1075	0.1202	0.1329	0.1585	0.184	0.2095	0.2435	0.3053
0.096	0.118	0.14	0.161	0.183	0.205	0.226	0.27	0.312	0.324	0.375	0.469
0.091	0.112	0.134	0.154	0.176	0.198	0.216	0.257	0.298	0.314	0.354	0.446
0.06	0.073	0.086	0.099	0.112	0.125	0.138	0.164	0.19	0.216	0.25	0.312
0.057	0.07	0.083	0.095	0.108	0.121	0.134	0.159	0.185	0.21	0.244	0.306
0.05	0.062	0.078	0.078	0.094	0.094	0.109	0.141	0.156	0.156	0.188	0.25
0.025	0.031	0.038	0.044	0.051	0.057	0.064	0.077	0.09	0.103	0.12	0.151
0.5	0.62	0.62	0.62	0.75	0.75	0.75	0.88	0.88	0.88	1	1.12
0.004	0.005	0.008	0.008	0.009	0.012	0.013	0.014	0.018	0.022	0.025	0.033
0.007	0.007	0.007	0.007	0.008	0.008	0.008	0.008	0.008	0.010	0.010	0.010
0.020	0.025	0.029	0.034	0.038	0.043	0.047	0.056	0.065	0.082	0.095	0.119

Size

3/8

7/16

1/2

9/16

5/8

3/4

7/8

1-1/8

1-1/4

1-3/8

1-1/2

d	Screw Diameter
PP	UNC
	UNF
	UNEF
d_s	max=nominal size
	min
d_k ^①	max
	min
k	max
	min
s	Nominal Size
t	min
b	min
c	chamfer or radius	max
r	chamfer or radius	max
w	min

0.375	0.4375	0.5	0.5625	0.625	0.75	0.875	1	1.125	1.25	1.375	1.5
16	14	13	12	11	10	9	8	7	7	6	6
24	20	20	18	18	16	14	12	12	12	12	12
32	28	28	24	24	20	20	20	18	18	18	18
0.375	0.4375	0.5	0.5625	0.625	0.75	0.875	1	1.125	1.25	1.375	1.5
0.3678	0.4294	0.4919	0.5538	0.6163	0.7406	0.8647	0.9886	1.1086	1.2336	1.3568	1.4818
0.562	0.656	0.75	0.843	0.938	1.125	1.312	1.5	1.688	1.875	2.062	2.25
0.54	0.631	0.725	0.827	0.914	1.094	1.291	1.476	1.665	1.852	2.038	2.224
0.375	0.438	0.5	0.562	0.625	0.75	0.875	1	1.125	1.25	1.375	1.5
0.368	0.43	0.492	0.554	0.616	0.74	0.864	0.988	1.111	1.236	1.36	1.485
0.312	0.375	0.375	0.437	0.5	0.625	0.75	0.75	0.875	0.875	1	1
0.182	0.213	0.245	0.276	0.307	0.37	0.432	0.495	0.557	0.62	0.682	0.745
1.25	1.38	1.5	1.5	1.75	2	2.25	2.5	2.81	3.12	3.44	3.75
0.040	0.047	0.055	0.062	0.070	0.085	0.100	0.114	0.129	0.144	0.160	0.176
0.010	0.015	0.015	0.015	0.015	0.015	0.020	0.020	0.020	0.020	0.020	0.020
0.143	0.166	0.190	0.214	0.238	0.285	0.333	0.380	0.428	0.475	0.523	0.570

Size

1-3/4

2-1/4

2-1/2

2-3/4

3-1/4

3-1/2

3-3/4

d	Screw Diameter
PP	UNC
	UNF
	UNEF
d_s	max=nominal size
	min
d_k ^①	max
	min
k	max
	min
s	Nominal Size
t	min
b	min
c	chamfer or radius	max
r	chamfer or radius	max
w	min

1.75	2	2.25	2.5	2.75	3	3.25	3.5	3.75	4
5	4.5	4.5	4	4	4	4	4	4	4
-	-	-	-	-	-	-	-	-	-
-	-	-	-	-	-	-	-	-	-
1.75	2	2.25	2.5	2.75	3	3.25	3.5	3.75	4
1.7295	1.978	2.228	2.4762	2.7262	2.9762	3.2262	3.4762	3.7262	3.9762
2.625	3	3.375	3.75	4.125	4.5	4.875	5.25	5.625	6
2.597	2.97	3.344	3.717	4.09	4.464	4.837	5.211	5.584	5.958
1.75	2	2.25	2.5	2.75	3	3.25	3.5	3.75	4
1.734	1.983	2.232	2.481	2.73	2.979	3.228	3.478	3.727	3.976
1.25	1.5	1.75	1.75	2	2.25	2.25	2.75	2.75	3
0.87	0.995	1.12	1.245	1.37	1.495	1.62	1.745	1.87	1.995
4.38	5	5.62	6.25	6.88	7.5	8.12	8.75	9.38	10
0.207	0.238	0.269	0.300	0.332	0.363	0.394	0.426	0.458	0.489
0.020	0.020	0.036	0.036	0.036	0.036	0.036	0.036	0.036	0.036
0.665	0.760	0.855	0.950	1.045	1.140	1.235	1.330	1.425	1.520

①,Material
a、Faricated from alloy steel and shall conform in all respects to ASTM A574
b、Faricated from corrosion-resistant steel and shall conform in all respects to ASTM F837
②,Heads may be plain or knurled at the option of the manufacturer, unless specified otherwise by the customer. For knurled screws, the maximum head diameter shall be measured across the tops of the knurl, and the minimum head diameter shall
be the diameter of the unknurled portion or the diameter across the tops of the knurl for those screws not having an unknurled portion, just above the radius or chamfer at the bottom edge of the head .