Tools & Hardware Fasteners Screws Screws

DIN 7991 Countersunk Head Screws

Name: DIN 7991 Countersunk Head Screws
Brand: Jiaxing City Qunbang Hardware Co., Ltd

DIN 7991 Flat Black Zinc M3 To M24 Countersunk Head Screws Flat head countersunk socket cap screws DIN 7991 are not intended for high strength application. The purpose of producing them with a strength of the property class 10.9 is to increase the wear resistance of the sockets. Current norm: DIN EN ISO 10462 Equivalent norms: ISO 10642; UNI 5933; Screw Thread d M3 M4 M5 M6 M8 M10 M12 (M14) M16 (M18) M20 (M22) M24 P Pitch α tol.(+2) b L≤125mm 125＜L ≤ 200 L＞200 dk max=nominal

Place of Origin CHINA

Size M3-M24

Sample Free Sample

Packaging Details 25kg Carton+900kg/Pallet

Material Carbon steel

Grade 6.8/8.8/10.9/12.9

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Product Description

DIN 7991 Flat Black Zinc M3 To M24 Countersunk Head Screws

Flat head countersunk socket cap screws DIN 7991 are not intended for high strength application. The purpose of producing them with a strength of the property class 10.9 is to increase the wear resistance of the sockets.

Current norm: DIN EN ISO 10462
Equivalent norms: ISO 10642; UNI 5933;

Screw Thread
d

M10

M12

(M14)

M16

(M18)

M20

(M22)

M24

P	Pitch
α	tol.(+2)
b	L≤125mm
	125＜L ≤ 200
	L＞200
d_k	max=nominal size
d_k	min
d_s	max=nominal size
d_s	min
e	min
k	max
s	Nominal Size
	min
	max
t	max=nominal size
t	min

0.5	0.7	0.8	1	1.25	1.5	1.75	2	2	2.5	2.5	2.5	3
90°	90°	90°	90°	90°	90°	90°	90°	90°	90°	90°	60°	60°
12	14	16	18	22	26	30	34	38	42	46	50	54
/	/	/	24	28	32	36	40	44	48	52	56	60
/	/	/	/	/	45	49	53	57	61	65	69	73
6	8	10	12	16	20	24	27	30	33	36	36	39
5.7	7.64	9.64	11.57	15.57	19.48	23.48	26.48	29.48	32.38	35.38	35.38	38.38
3	4	5	6	8	10	12	14	16	18	20	22	24
2.86	3.82	4.82	5.82	7.78	9.78	11.73	13.73	15.73	17.73	19.67	21.67	23.67
2.3	2.87	3.44	4.58	5.72	6.86	9.15	11.43	11.43	13.72	13.72	16	16
1.7	2.3	2.8	3.3	4.4	5.5	6.5	7	7.5	8	8.5	13.1	14
2	2.5	3	4	5	6	8	10	10	12	12	14	14
2.02	2.52	3.02	4.02	5.02	6.02	8.025	10.025	10.025	12.032	12.032	14.032	14.032
2.1	2.6	3.1	4.12	5.14	6.14	8.175	10.175	10.175	12.212	12.212	14.212	14.212
1.2	1.8	2.3	2.5	3.5	4.4	4.6	4.8	5.3	5.5	5.9	8.8	10.3
0.95	1.55	2.05	2.25	3.2	4.1	4.3	4.5	5	5.2	5.6	8.44	9.87