Hex socket head cap screws DIN912-1983 ASME B18.3-1998 BS 2470-1973

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Hex socket head cap screws DIN912-1983 ASME B18.3-1998 BS 2470-1973

The hexagon socket head cap screw has an accurate hexagon hole,
knurling is for more convenient operation
The precise forging makes the metal flow direction of the screw more even,
and the more light the bearing area of the head,the screw,
The greater the tensile load.
The"3-R"of the screw increases the fatigue strength of the key
part of the outer circle joint.
Full thread is conducive to enhance the screw and workpiece in the process
of using the tightness,greatly improving the fatigue strength of the screw.

The computer-controlled heat treatment process can ensure that the mechanical
properties of the screws meet the requrements of iso898.1

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Product Description

According To				ASME B18.3-1998
Material				Alloy Steel
Hardness				HRC 39-45
Type of thread				ANSI B1.1 UNC,UNF
Class of thread				#6 Through 1 in.-3A
				Over 1 in.-2A
Surface Treatment				Black Oxide

Nominal Size or Basic Screw Diameter	D		A		H		J		T	F		LT
	Body Diameter		Head Diameter		Head Height		Hexagon Socket Size		Key Engagment	Filet Juncture Diameter at Bearing surface		Thread Length

	Max.	Min.	Max.	Min.	Max.	Min.	Nom.		Min.	Max.	Min.	Basic.
#40.1120	0.1120	0.1075	0.183	0.176	0.112	0.108	3-32	0.094	0.051	0.130	0.117	0.75
#60.1380	0.1380	0.1329	0.226	0.218	0.138	0.134	7-64	0.109	0.064	0.158	0.144	0.75
#80.1640	0.1640	0.1585	0.270	0.262	0.164	0.159	9-64	0.141	0.077	0.188	0.172	0.88
#100.1900	0.1900	0.1840	0.312	0.303	0.190	0.185	5/32	0.156	0.090	0.218	0.202	0.88

1/40.2500	0.2500	0.2435	0.375	0.365	0.250	0.244	3-16	0.188	0.120	0.278	0.261	1.00

5/160.3125	0.3125	0.3053	0.469	0.457	0.312	0.306	1-4	0.250	0.151	0.347	0.329	1.12

3/80.3750	0.3750	0.3678	0.562	0.550	0.375	0.368	5-16	0.312	0.182	0.415	0.397	1.25

7/160.4375	0.4375	0.4294	0.656	0.642	0.438	0.430	3-8	0.375	0.213	0.484	0.465	1.38

1/20.5000	0.5000	0.4919	0.750	0.735	0.500	0.492	3-8	0.375	0.245	0.552	0.531	1.50

5/80.6250	0.6250	0.6163	0.938	0.921	0.625	0.616	1-2	0.500	0.307	0.689	0.664	1.75

3/40.7500	0.7500	0.7406	1.125	1.107	0.750	0.740	5-8	0.625	0.370	0.828	0.800	2.00
7/80.8750	0.8750	0.8647	1.312	1.293	0.875	0.864	3-4	0.750	0.432	0.963	0.932	2.25
11.0000	1.0000	0.9886	1.500	1.479	1.000	0.988	3-4	0.750	0.495	1.100	1.068	2.50

According To

BS 2470-1973

Material

Alloy Steel

Hardness

HRC 38-45

Class of thread

JIS B 0210 Class 2(whith)

Surface Treatment

Black Oxide

Nominal Size	D		A		H		S	J	K	W	F	da	C	T
	Body Diameter		Head Diameter		Head Height		Head Side Height	Hexagon Socket Size	Key Engage- ment	Wall Thick- ness	Filet Radius		Chamter or Radius	Thread Length


	Max.	Min.	Max.	Min.	Max.	Min.	Min.	Nom.	Min.	Min.	Min.	Max.	Max.	Min.
1-8	0.1240	0.1200	0.2189	0.21	0.1252	0.121	0.111	3-32	0.059	0.046	0.006	0.126	0.004	0.625
5-32	0.1560	0.1500	0.250	0.242	0.1607	0.156	0.144	1-8	0.0767	0.055	0.007	0.181	0.045	0.750
3-16	0.1875	0.1815	0.312	0.303	0.187	0.182	0.168	5-32	0.089	0.065	0.009	0.2155	0.005	0.875

V4	0.2500	0.2435	0.375	0.365	0.250	0.244	0.225	3-16	0.120	0.095	0.009	0.2780	0.008	1.000

5-16	0.3125	0.3053	0.437	0.425	0.312	0.306	0.281	7-32	0.151	0.119	0.012	0.3465	0.008	1.125

3-8	0.3750	0.3678	0.562	0.550	0.375	0.368	0.337	5-16	0.182	0.143	0.015	0.4150	0.008	1.250

7-16	0.4375	0.4294	0.625	0.611	0.437	0.430	0.394	5-16	0.213	0.166	0.018	0.4835	0.010	1.375

V2	0.5000	0.4919	0.750	0.735	0.500	0.492	0.450	3-8	0.245	0.190	0.020	0.5520	0.010	1.500

5-8	0.6250	0.6163	0.875	0.853	0.625	0.616	0.562	1-2	0.307	0.238	0.024	0.6890	0.010	1.750
314	0.7500	0.7406	1.000	0.982	0.750	0.740	0.675	9-16	0.370	0.285	0.030	0.8280	0.010	2.000

According To	DIN912-1983
Strength Grade	12.9	10.9	8.8
			d≤16	d>16
Hardness	HRC 39-44	HRC 32-39	HRC 22-32	HRC 23-34
Tensile Strength	1220N/mm²	1040N/mm²	800N/mm²	830N/mm²
Material	Alloy Steel		Carbon Steel
Surface Treatment	Black Oxide
Class of thread	5g6g	6g

螺纹规格d		M1.6	M2	M2.5	M3	M4	M5	M6	M8	M10	M12	M14	M16
P	粗牙	0.35	0.4	0.45	0.5	0.5	0.8	1	1.25	1.5	1.75	2	2
P	细牙								1	1.25	1.25	1.5	1.5
b	参考尺寸	15	16	7	8	20	22	24	28	32	36	40	44
dk	1)Max.	3	3.8	4.5	5.5	7	8.5	10	13	16	18	21	24
	2)Max.	3.14	3.98	4.68	5.68	7.22	8.72	10.22	13.27	16.27	18.27	21.33	24.33
	Min.	2.86	3.62	4.32	5.32	6.78	8.28	9.78	12.73	15.73	17.73	20.67	23.67
da	Max.	2	2.6	3.1	3.6	4.7	5.7	6.8	9.2	11.2	13.7	15.7	17.7
ds	Max.	1.6	2	2.5	3	4	5	6	8	10	12	14	16
ds	Min.	1.46	1.86	2.36	2.86	3.82	4.82	5.82	7.78	9.78	11.73	13.73	15.73
e	Min.	1.73	1.73	2.30	2.87	3.44	4.58	5.72	6.86	9.15	11.43	13.72	16.00
f	Max.	0.34	0.51	0.51	0.51	0.60	0.60	0.68	1.02	1.02	1.87	1.87	1.87
k	Max.	1.6	2	2.5	3	4	5	6	8	10	12	14	16
k	Min.	1.46	1.86	2.36	2.86	3.82	4.82	5.70	7.64	9.64	11.57	13.57	15.57
r	Min.	0.1	0.1	0.1	0.1	0.2	0.2	0.25	0.4	0.4	0.6	0.6	0.6
s	Nominal size	1.5	1.5	2	2.5	3	4	5	6	8	10	12	14
	Min.	1.52	1.52	2.02	2.52	3.02	4.02	5.02	6.02	8.025	10.025	12.032	14.032
	Max.	1.560	1.560	2.060	2.580	3.080	4.095	5.140	6.140	8.175	10.175	12.212	14.212
t	Min,	0.7	1	1.1	1.3	2	2.5	3	4	5	6	7	8
V	Max.	0.16	0.2	0.25	0.3	0.4	0.5	0.6	0.8	1	1.2	1.4	1.6
dw	Min.	2.72	3.48	4.18	5.07	6.53	8.03	9.38	12.33	15.33	17.23	20.17	23.17
w	Min.	0.55	0.55	0.85	1.15	1.4	1.9	2.3	3.0	4	4.8	5.8	6.8

Pengchi Hardware (shandong) Co., Ltd. passed ISO9001:2008 quality management system certification, and actively prepared TS16949 quality system certification. At the same time, the company, in accordance with the requirements of national laboratory standards, is equipped with a full set of imported fastener quality testing instruments and professionals to strictly control and test the raw material procurement, finish milling, production and manufacturing, heat treatment, packaging and shipment and other processes. Ensure that each "XGP" screw can meet the technical standard requirements.

We own cold heading machines, hot heading machines, CNC lathes, CNC machining centers, and punching machines. With over a decade of experience, we have a team of over 30 people, including over 10 professional technicians. We utilize domestically produced high-tech equipment and regularly update it. Our extensive production experience and advanced technology make us a trusted source of expertise.

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