Delivery Time:30 days
Certification:ISO 9001

Grade 4.8 to 12.9 Steel Zinc Plated Hex Cap Screws Bolts DIN 933 M1.6 to M52

M1.6 to M52 standard DIN933 hex cap screws with grade 4.8 to 12.9 for vast applicaton requests .

Hex cap screw is also known as hex bolt . Normally . it has a hexagonal head with chamfer edges for hex socket wrench or spanner rotating during operation , machine thread style is fine or course and the threaded length is about 2/3 of total shaft length for the lengths over 70 mm .

Full Specifications

We offer hex cap screws from M1.6 to M52 ( thread diameter ) and max length is up to 350 mm .

 DIN933/GB5783-86/ISO4017

M	k	s	e
1.6	1.1	3.2	3.41
2	1.4	4	4.32
2.5	1.7	5	5.45
3	2	5.5	6.01
3.5	2.4	6	6.58
4	2.8	7	7.66
5	3.5	8	8.79
6	4	10	11.05
7	4.8	11	12.12
8	5.3	13	14.38
10	6.4	17	18.9
12	7.5	19	21.1
14	8.8	22	24.49
16	10	24	26.75
18	11.5	27	30.14
20	12.5	30	33.53
22	14	32	35.72
24	15	36	39.98
27	17	41	45.2
30	18.7	46	50.85
33	21	50	55.37
36	22.5	55	60.79
39	25	60	66.44
42	26	65	71.3
45	28	70	76.95
48	30	75	82.6
52	33	80	88.25

Materials

The property class for hex cap screws involve 4.8 ,6.8 ,8.8 ,10.9 and 12.9 , different classes different material to be taken .

Stainless steel : SUS 201, SUS 304 ,SUS 316 , SUS 416 ,SUS 430 and SUS 420 ( above grade 8.8 )

Carbon steel : 1008 , 1010 , 1018 , 1022 , 1035 , 1045 , SCM 435 and 40CRO (  grade 4.8 to  12.9 )

Aluminum : 2024 , 6061 and 7075  (Below grade 4.8 )

Brass : CuZn35 , CuZn37 , CuZn40 , CuZn37Pb1 and CuZn39Pb1 ( Below grade 4.8 )

Note : Aluminum and brass material are for quite light-load .

Finish

Description	Charicteristic
Zinc	Various color can be choosed and perfect on anti-corrosion
Nickel	Make the surface of the screws more bright and hardened and the performance of screws will be improved
Polish	Improving the brightness of surface but is inferior is not as zinc in anti-corrosion
Tin	it is very perfect to be anti-rust , and widely used to components
Brass	It is usually used with Nickel for more good anti-corrrosion.
Dacromet	Is used for screws with big sizes and can stop screws to be rusted long time even under bad surroundings .
Passivation	A little dark on the surface , good corrosion resistance

Applications

Hex cap screws are widely used to different areas for industry and agricultures

Aerospace

Vessel

Trucks and cars

Official items

Furniture

Building

Railway

Industrial machines