GB /T 70.3 - 2000 Hexagon socket countersunk head screws

Unit: mm

国标GB /T70.3 - 2000 GB70.3 70.3GB Hexagon socket countersunk head screws

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

Screw Thread
d

M10

M12

(M14)

M16

M20

P	Pitch
b	Ref.
d_k	Theoretical	max
	Actual	min
d_s	max
	min
e ^①	min
k	max
s ^①	Nominal Size
	max	12.9
		Other
	min
t	min
Minimum tensile load(N) ^②	8.8
	10.9
	12.9

0.5	0.7	0.8	1	1.25	1.5	1.75	2	2	2.5
18	20	22	24	28	32	36	40	44	52
6.72	8.96	11.2	13.44	17.92	22.4	26.88	30.8	33.6	40.32
5.54	7.53	9.43	11.34	15.24	19.22	23.12	26.52	29.01	36.05
3	4	5	6	8	10	12	14	16	20
2.86	3.82	4.82	5.82	7.78	9.78	11.73	13.73	15.73	19.67
2.3	2.87	3.44	4.58	5.72	6.86	9.15	11.43	11.43	13.72
1.86	2.48	3.1	3.72	4.96	6.2	7.44	8.4	8.8	10.16
2	2.5	3	4	5	6	8	10	10	12
2.045	2.56	3.071	4.084	5.084	6.095	8.115	10.115	10.115	12.142
2.060	2.58	3.080	4.095	5.140	6.140	8.175	10.175	10.175	12.212
2.020	2.52	3.020	4.020	5.020	6.020	8.025	10.025	10.025	12.032
1.1	1.5	1.9	2.2	3	3.6	4.3	4.5	4.8	5.6
3220	5620	9080	12900	23400	37100	53900	73600	100000	162000
4180	7300	11800	16700	30500	48200	70200	96000	130000	204000
4910	8506	13800	19600	35700	56600	82400	112000	154000	239000

Weight of per 1000 steel products(≈kg)

①,e_min=1.14s_min;
Combined gauging of socket dimensions and , see GB/T 70.5
②,80% of the values specified in GB/T 3098.1

Alternative history

GB /T 70.3 - 2000 GB /T 70.3 - 2008

Suppliers

You will get the best price if inform us the information comes from GlobalFastener.com.

1	China Mainland Dongtai Huawei Standard Component Co., Ltd. Frank Qiu Telephone: +86-515-85521918/85525868/85528009/85922919/85923919 Material: stainless steel 304, 316; Nominal diameter: M2-M20; Nominal length: according to customer requirement	Contact us via Email
2	China Mainland Suzhou Yongchuang Fastener Factory Mr. Tang Mobile Phone: +86-15298892886 Telephone: +86-512-66700967 Material: stainless steel, carbon steel; Nominal diameter: M1-M14; Nominal length: 5-400mm	Contact us via Email

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