8.8 Grade Surface Treatment Black Oxide Hexagon Head Bolts

• Material: Alloy Steel
• Type: Hexagon Head
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: DIN, ANSI, GB, JIS, BSW, GOST
• Grade: 8.8 Grade
• Model NO.: 8.8 Hexagon Head Bolts
• Application: Machinery, Chemical Industry, Building
• Finish: Customized
• Thread Size: M3-M36
• Color: Black Oxide / OEM
• Thread Type: Metric/Imperial
• Used: Building/Machinery/Industry
• Transport Package: Standard Export Wooden Box
• Specification: M3-M36
• Trademark: OEM
• Origin: Shanghai, China

Product Description

Product Parameters

According To	DIN931/933
Strength Grade	12.9	10.9	8.8
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

 

Thread Size(d)	p	ds		da	dw	e	k		r	s
		Max	Min	Max	Min	Min	Nominal Size	Toleranca	Min	Nominal Size	Min
M3	0.5	3	2.86	3.6	4.6	6.01	2	±0.12	0.1	5.5	5.32
M4	0.7	4	3.82	4.7	5.9	7.66	2.8	±0.12	0.2	7.0	6.78
M5	0.8	5	4.82	5.7	6.9	8.79	3.5	±0.15	0.2	8.0	9.78
M6	1	6	5.82	6.8	8.9	11.05	4	±0.15	0.3	10	9.78
M8	1.25	8	7.78	9.2	11.6	14.38	5.3	±0.15	0.4	13	12.73
M10	1.5	10	9.78	11.2	15.6	18.09	6.4	±0.18	0.4	17	16.73
M12	1.75	12	11.73	13.7	17.4	21.1	7.5	±0.18	0.6	19	18.67
M16	2	16	15.73	17.7	22.5	26.75	10	±0.18	0.6	24	23.67
M20	2.5	20	19.67	22.4	28.2	33.53	12.5	±0.22	0.8	30	29.67
M24	3	24	23.67	26.4	33.6	39.98	15	±0.22	0.8	36	35.38
M30	3.5	30	29.48	33.4	42.7	50.85	18.7	-	1.0	46	55
M36	4	36	35.38	39.4	51.1	60.79	22.5	-	1.0	55	53.8

 


FAQ:

1.What other similar products do you offer?
Stud bolts,Heavy Hex Nuts,Structure nuts,Hex nuts, Thread rods, Tapping/Double End Studs;All kinds of Hex Head Bolts, Hex Socket Head Cap Screw with Grade: 8.8, 10.9, 12.9. 

2.Do you provide custom service?
Yes.Our professional engineers can design professional drawings according to your needs, and can also produce according to the drawings you provide.

3.What materials do you offer bolts?
Carbon steel, stainless steel, titanium, copper, aluminum and so on.

4.How do you control the quality?
Always pre-production sample Inspection before mass production.Always final Inspection before shipment.