Grade 8.8 Hex Socket Bolt
Grade 8.8 Hex Socket Bolt
Grade 8.8 Hex Socket Bolt
Grade 8.8 Hex Socket Bolt

Grade 8.8 Hex Socket Bolt

There are different grades of hex socket head cap bolts, such as grade 4.8, 8.8, 10.9, and 12.9. The high-strength options are typically grade 8.8 and above, and are commonly referred to as high-strength Allen bolts. Grade 12.9 hex socket bolts usually feature knurling for added grip. Meanwhile,...

Send Inquiry

Product Introduction

，，DIN912，。，。

It is important to note that the prices of DIN912 Allen bolts vary greatly depending on their grade. High-strength hex socket head cap bolts are generally more expensive than standard hex socket bolts. The market typically offers four grades of Allen bolts which are the 4.8, 8.8, 10.9, and 12.9 grades. These grades are commonly used in different industries.

Advantages of Grade 8.8 Hex Socket Bolts

A Grade 8.8 hex socket bolt is designed to handle heavy loads efficiently. With its six force-bearing surfaces, it offers superior resistance to twisting compared to flat-blade screws or cross-shaped screws, which only have two surfaces.

Countersinking Allen bolts is a practical way to ensure that the workpiece surface remains flat and aesthetically pleasing. The bolt is entirely sunk into the material, providing a smooth finish that does not disrupt the overall appearance of the piece.

3. Easy to install.

4. It is not easy to disassemble.

Production Process of Grade 8.8 Hex Socket Bolt

Specification of Grade 8.8 Hex Socket Bolt

Grade 8.8 Hex Socket Bolt

d		M1.4	M1.6	M2	M2.5	M3	M4	M5	M6	M8	M10	M12	(M14)	M16	(M18)	M20
P	Coarse	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 1	-	-	-	-	-	-	-	-	1	1.25	1.25	1.5	1.5	1.5	1.5
	Fine 2	-	-	-	-	-	-	-	-	-	1	1.5	-	-	2	2
dk	Max	2.6	3	3.8	4.5	5.5	7	8.5	10	13	16	18	21	24	27	30
	Max for knurled head	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
da	Max	1.8	2	2.6	3.1	3.6	4.7	5.7	6.8	9.2	11.2	13.7	15.7	17.7	20.2	22.4
ds	Max	1.4	1.6	2	2.5	3	4	5	6	8	10	12	14	16	18	20
	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
e	Min	1.5	1.73	1.73	2.3	2.87	3.44	4.58	5.72	6.86	9.15	11.43	13.72	16	16	19.44
k	Max	1.4	1.6	2	2.5	3	4	5	6	8	10	12	14	16	18	20
	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
w	Min	0.5	0.55	0.55	0.85	1.15	1.4	1.9	2.3	3	4	4.8	5.8	6.8	7.8	8.6

d		(M22)	M24	(M27)	M30	(M33)	M36	M42	M48	M56	M64	M72	M80	M90	M100
P	Coarse	2.5	3	3	3.5	3.5	4	4.5	5	5.5	6	6	6	6	6
	Fine 1	1.5	2	2	2	2	3	3	3	4	4	4	4	4	4
	Fine 2	2	-	-	-	-	-	-	-	-	-	-	-	-	-
dk	Max	33	36	40	45	50	54	63	72	84	96	108	120	135	150
	Max for knurled head	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
da	Max	24.4	26.4	30.4	33.4	36.4	39.4	45.5	52.6	63	71	79	87	97	107
ds	Max	22	24	27	30	33	36	42	48	56	64	72	80	90	100
	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
e	Min	19.44	21.73	21.73	25.15	27.43	30.85	36.57	41.13	46.83	52.53	62.81	74.21	85.61	97.04
k	Max	22	24	27	30	33	36	42	48	56	64	72	80	90	100
	Min	21.48	23.48	26.48	29.48	32.38	35.38	41.38	47.38	55.26	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
w	Min	9.4	10.4	11.9	13.1	13.5	15.3	16.3	17.5	19	22	25	27	32	34

Application Area of Grade 8.8 Hex Socket Bolt

High-strength hex socket head cap bolts are mainly used in railway and highway bridges, boiler steel structures, industrial plants, high-rise civil buildings, tower and mast structures, hoisting machinery and their steel structures where friction type high-strength socket head cap screws are required. And ordinary hex socket bolts are widely used in electronics, electrical appliances, electrical, electric power, chemical industry, water conservancy, mechanical equipment, furniture and other fields.

Of course, in some specific locations in these fields, other products are also used, such as rail bolts, flange nuts, U-bolts, flat head hex socket bolts, T-bolts, round head square neck bolts and round head oval neck bolts etc.

Application area of Grade 8.8 Hex Socket Bolt

Hot Tags: grade 8.8 hex socket bolt, China grade 8.8 hex socket bolt manufacturers, suppliers, factory

Galvanized Hex Socket Bolt

No Information