Click Specification

(Non-preferred) dimensions in parentheses.

Hexagon socket head cap screws

GB 70 - 1976

Display drawing:

Download CAD Model^*

^*Models with different eras.

Calculate weight and price. Weight 1000 pcs : kg x $ per kg = $ 1000 pcs

Default density g/cm³

Nominal Length L Tips:seclect Nominal Length L and get Weight Thread length.

Screw Thread
d

M10

M12

(M14)

M16

P	Pitch
d_k	max
d_k	min
k	Nominal Size
	max
	min
s	Nominal Size
	max
	min
t	min
t	max

0.7	0.8	1	1.25	1.5	1.75	2	2
7	8.5	10	12.5	15	18	21	24
6.8	8.3	9.8	12.26	14.76	17.76	20.72	23.72
4	5	6	8	10	12	14	16
4.24	5.24	6.24	8.29	10.29	12.35	14.35	16.35
3.76	4.76	5.76	7.71	9.71	11.65	13.65	15.65
3	4	5	6	8	10	12	12
3.12	4.16	5.16	6.16	8.2	10.2	12.24	12.24
3.02	4.03	5.03	6.03	8.04	10.04	12.05	12.05
2	2.5	3	4	5	6	7	8
2.6	3.1	3.6	4.75	5.75	6.75	7.9	8.9

Weight of per 1000 steel products(≈kg)

Length of Thread b

Screw Thread
d

(M18)

M20

(M22)

M24

(M27)

M30

M36

M42

P	Pitch
d_k	max
d_k	min
k	Nominal Size
	max
	min
s	Nominal Size
	max
	min
t	min
t	max

2.5	2.5	2.5	3	3	3.5	4	4.5
27	30	33	36	40	42	50	58
26.72	29.72	32.66	35.66	39.66	41.66	49.66	57.6
18	20	22	24	27	30	36	42
18.35	20.42	22.42	24.42	27.42	30.42	36.5	42.5
17.65	19.58	21.58	23.58	26.58	29.58	35.5	41.5
14	14	17	17	19	19	24	27
14.24	14.24	17.24	17.24	19.28	19.28	24.28	27.28
14.05	14.05	17.05	17.05	19.06	19.06	24.06	27.06
9	10	11	12	14	15	18	21
9.9	10.9	12.1	13.1	15.1	16.1	19.1	22.3

Weight of per 1000 steel products(≈kg)

Length of Thread b

Alternative history

GB 70 - 1976 GB 70 - 1985 GB /T 70.1 - 2000 GB /T 70.1 - 2008

Suppliers

Best price if from GlobalFastener.com.

Yuyao Hutson Metal Product Co., Ltd.

Ma Huazhen/Xu Tianyang
+86-13095941973, 18268663653
+86-574-62761228

Material: stainless steel, A2-70, A2-80, A4-70, A4-80, A2(302, 303, 304), A4(316), 410, 430; Complete specifications

Suzhou Yongchuang Fastener Factory

Mr. Tang
+86-15298892886
+86-512-66700967

Material: stainless steel, carbon steel; Nominal diameter: M1-M14; Nominal length: 5-400mm

GotopScrews International Co., Limited

Manager Zhuang
+86-13008864675
+86-755-89505088

aterial: carbon steel, alloy steel, stainless steel, copper, aluminum, titanium; Specifications: M0.6~M6; Length: 1~60mm; Surface Treatment: galvanizing, nickel plating, zinc nickel alloy, electrophoresis, dacromet, CD grain, PVD, etc.

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