DIN 6921 Zinc Plated Bolts And Nuts Steel Hex Serrated Flanged Hex Head Screws Class 8.8

Medium-Strength Metric Class 8.8 Steel Flanged Hex Head Screws

Product Description:

These Class 8.8 steel screws are suitable for fastening most machinery and equipment. The flange distributes pressure where the screw meets the surface, eliminating the need for a separate washer. All screws meet DIN 6921 specifications for dimensions. Head height includes the flange. Length is measured from under the flange.

Features:

Used in automotive applications,plumbing,and more,flange bolts feature a washer like flange beneath the bolt head that speeds production time and distributes the clamping load,offering protection to te mating surface.

Steel serrated flange bolts feature a scored grip under the head to help vibration.The serrated head bites into the surface to reduce vibration that can cause loosening.

Product Drawing:

Hexagon flange bolts
DIN 6921-1983
d(mm)	P(mm)	b(mm)			dc(mm)	ds(mm)		k(mm)	s(mm)
		L≤125	125<L≤200	L>200	max	min	max	max	min	max
M5	0.8	16	/	/	11.8	4.82	5	5.4	7.78	8
M6	1	18	/	/	14.2	5.82	6	6.6	9.78	10
M8	1/1.25	22	28	/	18	7.78	8	8.1	12.73	13
M10	1/1.25/1.5	26	32	/	22.3	9.78	10	9.2	14.73	15
M12	1.25/1.5/1.75	30	36	/	26.6	11.73	12	11.5	15.73	16
M14	1.5/2	34	40	/	30.5	13.73	14	12.8	17.73	18
M16	1.5/2	38	44	57	35	15.73	16	14.4	20.67	21
M20	1.5/2.5	46	52	65	43	19.67	20	17.1	26.67	27