China Cheap price Self Tapping Screw/Drywall Screw - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide – Hongji manufacturers and suppliers

Cheap price Self Tapping Screw/Drywall Screw - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide – Hongji

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DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide

d		M1.4	M1.6	M2	M2.5	M3	M4	M5	M6	M8	M10	M12	(M14)	M16	(M18)	M20
P	Coarse thread	0.3	0.35	0.4	0.45	0.5	0.7	0.8	1	1.25	1.5	1.75	2	2	2.5	2.5
	Fine thread	/	/	/	/	/	/	/	/	1	1.25	1.5	1.5	1.5	2	2
	Very Fine thread	/	/	/	/	/	/	/	/	/	1	1.25	/	/	1.5	1.5
b	Reference value	14	15	16	17	18	20	22	24	28	32	36	40	44	48	52
d_k	Max （Smooth）	2.6	3	3.8	4.5	5.5	7	8.5	10	13	16	18	21	24	27	30
	Max （Knurl*）	2.74	3.14	3.98	4.68	5.68	7.22	8.72	10.22	13.27	16.27	18.27	21.33	24.33	27.33	30.33
	Min	2.46	2.86	3.62	4.32	5.32	6.78	8.28	9.78	12.73	15.73	17.73	20.67	23.67	26.67	29.67
d_s	Max	1.4	1.6	2	2.5	3	4	5	6	8	10	12	14	16	18	20
d_s	Min	1.26	1.46	1.86	2.36	2.86	3.82	4.82	5.82	7.78	9.78	11.73	13.73	15.73	17.73	19.67
k	Max	1.4	1.6	2	2.5	3	4	5	6	8	10	12	14	16	18	20
k	Min	1.26	1.46	1.86	2.36	2.86	3.82	4.82	5.7	7.64	9.64	11.57	13.57	15.57	17.57	19.48
s	Nominal	1.3	1.5	1.5	2	2.5	3	4	5	6	8	10	12	14	14	17
	Min	1.32	1.52	1.52	2.02	2.52	3.02	4.02	5.02	6.02	8.025	10.025	12.032	14.032	14.032	17.05
	Max	1.36	1.56	1.56	2.06	2.58	3.08	4.095	5.14	6.14	8.175	10.175	12.212	14.212	14.212	17.23
t	Min	0.6	0.7	1	1.1	1.3	2	2.5	3	4	5	6	7	8	9	10
Thread length=b		-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

d		(M22)	M24	(M27)	M30	(M33)	M36	M42	M48	M56	M64	M72	M80	M90	M100
P	Coarse thread	2.5	3	3	3.5	3.5	4	4.5	5	5.5	6	6	6	6	6
	Fine thread	2	2	2	2	2	3	3	3	4	4	4	4	4	4
	Very Fine thread	1.5	/	/	/	/	/	/	/	/	/	/	/	/	/
b	Reference value	56	60	66	72	78	84	96	108	124	140	156	172	192	212
d_k	Max （Smooth）	33	36	40	45	50	54	63	72	84	96	108	120	135	150
	Max （Knurl*）	33.39	36.39	40.39	45.39	50.39	54.46	63.46	72.46	84.54	96.54	108.54	120.54	135.63	150.63
	Min	32.61	35.61	39.61	44.61	49.61	53.54	62.54	71.54	83.46	95.46	107.46	119.46	134.37	149.37
d_s	Max	22	24	27	30	33	36	42	48	56	64	72	80	90	100
d_s	Min	21.67	23.67	26.67	29.67	32.61	35.61	41.61	47.61	55.54	63.54	71.54	79.54	89.46	99.46
k	Max	22	24	27	30	33	36	42	48	56	64	72	80	90	100
k	Min	21.48	23.48	26.48	29.48	32.38	35.38	41.38	47.38	56.26	63.26	71.26	79.26	89.13	99.13
s	Nominal	17	19	19	22	24	27	32	36	41	46	55	65	75	85
	Min	17.05	19.065	19.065	22.065	24.065	27.065	32.08	36.08	41.08	46.08	55.1	65.1	75.1	85.12
	Max	17.23	19.275	19.275	22.275	24.275	27.275	32.33	36.33	41.33	46.33	55.4	65.4	75.4	85.47
t	Min	11	12	13.5	15.5	18	19	24	28	34	38	43	48	54	60
Thread length=b		-	-	-	-	-	-	-	-	-	-	-	-	-	-

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DIN912 Hex Socket Cup01
DIN912 Hex Socket Cup02
DIN912 Hex Socket Cup03
DIN912 Hex Socket Cup04

The hexagon socket head bolts are classified according to the hardness, tensile strength, yield strength, etc. of the screw wire, that is, the level of the hexagon socket head bolts, and what level the hexagon socket head bolts are. Different product materials are required to have different grades of hexagon socket head cap bolts corresponding to them. All hexagon socket head cap bolts have the following grades:

Hexagon socket head bolts are divided into ordinary and high-strength according to the strength of the grade. Ordinary hexagon socket head bolts refer to grade 4.8, and high-strength socket head bolts refer to grades 8.8 and above, including grades 10.9 and 12.9. Grade 12.9 hexagon socket head cap screws generally refer to knurled, natural black hexagon socket head cap screws with oil.

The performance grades of hexagon socket head cap bolts for steel structure connection are divided into more than 10 grades, such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, the bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel. After heat treatment (quenching and tempering), they are generally called high-strength bolts, and the rest are generally called ordinary bolts. The bolt performance grade label consists of two parts of numbers, which represent the nominal tensile strength value and yield ratio of the bolt material respectively.

Packing

The packaging of the socket head cap screws is the box and the outer box by default.

Packaging and delivery
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