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Grade 10.9 Hex Head Bolts

Name: Grade 10.9 Hex Head Bolts
Brand: Befast Co., Ltd.

Grade 10.9 hex head bolts are designed for high-strength applications in industries such as construction, automotive, and infrastructure. These bolts offer an impressive tensile strength, making them suitable for heavy-duty tasks where maximum load-bearing is essential.

Manufactured using alloy steel and heat-treated for enhanced hardness, Grade 10.9 bolts offer exceptional resistance to wear, fatigue, and high temperatures, ensuring long-lasting performance in challenging conditions.

Products

Specifications of Grade 10.9 Hex Head Bolts

Name	Hex Bolts	Materials	Carbon Steel/Stainless Steel
Standards	DIN ISO ANC BSW JIS etc.	Strength level	4.8 8.8 10.9 12.9 A2-70 A4-70 A4-80
Size	M3-M50	Surface finish	ZP\HDG\BLACK\Dacromet etc.
Length	15-500	Samples	Available

Grade 10.9 Hex Head Bolts Dimension

Hexagon Head Thick Shank Half Thread Bolts M1.6-M39 DIN 931

thread size			M1.6	M2	M2.5	M3	(M3.5)	M4	M5	M6	(M7)	M8	M10	M12
d			M1.6	M2	M2.5	M3	(M3.5)	M4	M5	M6	(M7)	M8	M10	M12
P	pitch		0.35	0.4	0.45	0.5	0.6	0.7	0.8	1	1	1.25	1.5	1.75
b	Reference	L≤125	9	10	11	12	13	14	16	18	20	twenty two	26	30
		125＜L≤200	-	-	-	-	-	-	twenty two	twenty four	26	28	32	36
		L＞200	-	-	-	-	-	-	-	-	-	-	45	49
c	minimum		0.1	0.1	0.1	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15
c	maximum value		0.25	0.25	0.25	0.4	0.4	0.4	0.5	0.5	0.5	0.6	0.6	0.6
d _a	maximum value		2	2.6	3.1	3.6	4.1	4.7	5.7	6.8	7.8	9.2	11.2	13.7
d_s	max = nominal		1.6	2	2.5	3	3.5	4	5	6	7	8	10	12
	minimum	Class A	1.46	1.86	2.36	2.86	3.32	3.82	4.82	5.82	6.78	7.78	9.78	11.73
	minimum	Class B	-	-	-	-	-	-	-	-	-	-	-	-
d_w	minimum	Class A	2.4	3.2	4.1	4.6	5.1	5.9	6.9	8.9	9.8	11.6	15.6	17.4
d_w	minimum	Class B	-	-	-	-	-	-	-	-	-	-	-	-
and	minimum	Class A	3.41	4.32	5.45	6.01	6.58	7.66	8.79	11.05	12.12	14.38	18.9	21.1
and	minimum	Class B	-	-	-	-	-	-	-	-	-	-	-	-
k	Nominal		1.1	1.4	1.7	2	2.4	2.8	3.5	4	4.8	5.3	6.4	7.5
	Class A	minimum	0.98	1.28	1.58	1.88	2.28	2.68	3.35	3.85	4.65	5.15	6.22	7.32
	Class A	maximum value	1.22	1.52	1.82	2.12	2.52	2.92	3.65	4.15	4.95	5.45	6.58	7.68
	Class B	minimum	-	-	-	-	-	-	-	-	-	-	-	-
	Class B	maximum value	-	-	-	-	-	-	-	-	-	-	-	-
k ₁	minimum		0.7	0.9	1.1	1.3	1.6	1.9	2.28	2.63	3.19	3.54	4.28	5.05
r	minimum		0.1	0.1	0.1	0.1	0.1	0.2	0.2	0.25	0.25	0.4	0.4	0.6
s	max = nominal		3.2	4	5	5.5	6	7	8	10	11	13	17	19
	minimum	Class A	3.02	3.82	4.82	5.32	5.82	6.78	7.78	9.78	10.73	12.73	16.73	18.67
	minimum	Class B	-	-	-	-	-	-	-	-	-	-	-	-
thread length b			-	-	-	-	-	-	-	-	-	-	-	-

thread size			(M14)	M16	(M18)	M20	(M22)	M24	(M27)	M30	(M33)	M36	(M39)
d			(M14)	M16	(M18)	M20	(M22)	M24	(M27)	M30	(M33)	M36	(M39)
P	pitch		2	2	2.5	2.5	2.5	3	3	3.5	3.5	4	4
b	Reference	L≤125	34	38	42	46	50	54	60	66	72	78	84
		125＜L≤200	40	44	48	52	56	60	66	72	78	84	90
		L＞200	53	57	61	65	69	73	79	85	91	97	103
c	minimum		0.15	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.3
c	maximum value		0.6	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	1
d _a	maximum value		15.7	17.7	20.2	22.4	24.4	26.4	30.4	33.4	36.4	39.4	42.4
d_s	max = nominal		14	16	18	20	twenty two	twenty four	27	30	33	36	39
	minimum	Class A	13.73	15.73	17.73	19.67	21.67	23.67	-	-	-	-	-
	minimum	Class B	-	15.57	17.57	19.48	21.48	23.48	26.48	29.48	32.38	35.38	38.38
d_w	minimum	Class A	20.5	22.5	25.3	28.2	30	33.6	-	-	-	-	-
d_w	minimum	Class B	-	twenty two	24.8	27.7	29.5	33.2	38	42.7	46.6	51.1	55.9
and	minimum	Class A	24.49	26.75	30.14	33.53	35.72	39.98	-	-	-	-	-
and	minimum	Class B	-	26.17	29.56	32.95	35.03	39.55	45.2	50.85	55.37	60.79	66.44
k	Nominal		8.8	10	11.5	12.5	14	15	17	18.7	twenty one	22.5	25
	Class A	minimum	8.62	9.82	11.28	12.28	13.78	14.78	-	-	-	-	-
	Class A	maximum value	8.98	10.18	11.72	12.72	14.22	15.22	-	-	-	-	-
	Class B	minimum	-	9.71	11.15	12.15	13.65	14.65	16.65	18.28	20.58	22.08	24.58
	Class B	maximum value	-	10.29	11.85	12.85	14.35	15.35	17.35	19.12	21.42	22.92	25.42
k ₁	minimum		5.96	6.8	7.8	8.5	9.6	10.3	11.7	12.8	14.4	15.5	17.2
r	minimum		0.6	0.6	0.6	0.8	0.8	0.8	1	1	1	1	1
s	max = nominal		twenty two	twenty four	27	30	32	36	41	46	50	55	60
	minimum	Class A	21.67	23.67	26.67	29.67	31.61	35.38	-	-	-	-	-
	minimum	Class B	-	23.16	26.16	29.16	31	35	40	45	49	53.8	58.8
thread length b			-	-	-	-	-	-	-	-	-	-	-

Full Thread Hexagon Head Bolts Grade A and B DIN 933

Thread specification			M1.6	M2	M2.5	M3	(M3.5)	M4	M5	M6	(M7)	M8	M10	M12	(M14)	M16
d			M1.6	M2	M2.5	M3	(M3.5)	M4	M5	M6	(M7)	M8	M10	M12	(M14)	M16
P	pitch		0.35	0.4	0.45	0.5	0.6	0.7	0.8	1	1	1.25	1.5	1.75	2	2
a	maximum value		1.05	1.2	1.35	1.5	1.8	2.1	2.4	3	3	3.75	4.5	5.25	6	6
c	minimum		0.1	0.1	0.1	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.2
c	maximum value		0.25	0.25	0.25	0.4	0.4	0.4	0.5	0.5	0.5	0.6	0.6	0.6	0.6	0.8
d _a	maximum value		2	2.6	3.1	3.6	4.1	4.7	5.7	6.8	7.8	9.2	11.2	13.7	15.7	17.7
d_w	Class A	minimum	2.4	3.2	4.1	4.6	5.1	5.9	6.9	8.9	9.6	11.6	15.6	17.4	20.5	22.5
d_w	Class B	minimum	-	-	-	-	-	5.7	6.7	8.7	9.4	11.4	15.4	17.2	20.1	twenty two
and	Class A	minimum	3.41	4.32	5.45	6.01	6.58	7.66	8.79	11.05	12.12	14.38	18.9	21.1	24.49	26.75
and	Class B	minimum	-	-	-	-	-	7.5	8.63	10.89	11.94	14.2	18.72	20.88	23.91	26.17
k	Nominal		1.1	1.4	1.7	2	2.4	2.8	3.5	4	4.8	5.3	6.4	7.5	8.8	10
	Class A	minimum	0.98	1.28	1.58	1.88	2.28	2.68	3.35	3.85	4.65	5.15	6.22	7.32	8.62	9.82
	Class A	maximum value	1.22	1.52	1.82	2.12	2.52	2.92	3.65	4.15	4.95	5.45	6.56	7.68	8.98	10.18
	Class B	minimum	-	-	-	-	-	2.6	3.26	3.76	4.56	5.06	6.11	7.21	8.51	9.71
	Class B	maximum value	-	-	-	-	-	3	3.74	4.24	5.04	5.54	6.69	7.79	9.09	10.29
k ₁	minimum		0.7	0.9	1.1	1.3	1.6	1.9	2.28	2.63	3.19	3.54	4.28	5.05	5.96	6.8
r	minimum		0.1	0.1	0.1	0.1	0.1	0.2	0.2	0.25	0.25	0.4	0.4	0.6	0.6	0.6
s	max = nominal		3.2	4	5	5.5	6	7	8	10	11	13	17	19	twenty two	twenty four
	Class A	minimum	3.02	3.82	4.82	5.32	5.82	6.78	7.78	9.78	10.73	12.73	16.73	18.67	21.67	23.67
	Class B	minimum	-	-	-	-	-	6.64	7.64	9.64	10.57	12.57	16.57	18.48	21.16	23.16
Thousand pieces of steel weight ≈kg			-	-	-	-	-	-	-	-	-	-	-	-	-	-

Thread specification			(M18)	M20	(M22)	M24	(M27)	M30	(M33)	M36	(M39)	M42	(M45)	M48	(M52)
d			(M18)	M20	(M22)	M24	(M27)	M30	(M33)	M36	(M39)	M42	(M45)	M48	(M52)
P	pitch		2.5	2.5	2.5	3	3	3.5	3.5	4	4	4.5	4.5	5	5
a	maximum value		7.5	7.5	7.5	9	9	10.5	10.5	12	12	13.5	13.5	15	15
c	minimum		0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.3	0.3	0.3	0.3	0.3
c	maximum value		0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	1	1	1	1	1
d _a	maximum value		20.2	22.4	24.4	26.4	30.4	33.4	36.4	39.4	42.4	45.6	48.6	52.6	56.6
d_w	Class A	minimum	25.3	28.2	30	33.6	-	-	-	-	-	-	-	-	-
d_w	Class B	minimum	24.8	27.7	29.5	33.2	38	42.7	46.5	51.1	55.9	59.9	64.7	69.4	74.2
and	Class A	minimum	30.14	33.53	35.72	39.98	-	-	-	-	-	-	-	-	-
and	Class B	minimum	29.56	32.95	35.03	39.55	45.2	50.85	55.37	60.79	66.44	71.3	76.95	82.6	88.25
k	Nominal		11.5	12.5	14	15	17	18.7	twenty one	22.5	25	26	28	30	33
	Class A	minimum	11.28	12.28	13.78	14.78	-	-	-	-	-	-	-	-	-
	Class A	maximum value	11.72	12.72	14.22	15.22	-	-	-	-	-	-	-	-	-
	Class B	minimum	11.15	12.15	13.65	14.65	16.65	18.28	20.58	22.08	24.58	25.58	27.58	29.58	32.5
	Class B	maximum value	11.85	12.85	14.35	15.35	17.35	19.12	21.42	22.92	25.42	26.42	28.42	30.42	33.5
k ₁	minimum		7.8	8.5	9.6	10.3	11.7	12.8	14.4	15.5	17.2	17.9	19.3	20.9	22.8
r	minimum		0.6	0.8	0.8	0.8	1	1	1	1	1	1.2	1.2	1.6	1.6
s	max = nominal		27	30	32	36	41	46	50	55	60	65	70	75	80
	Class A	minimum	26.67	29.67	31.61	35.38	-	-	-	-	-	-	-	-	-
	Class B	minimum	26.15	29.16	31	35	40	45	49	53.8	58.8	63.1	68.1	73.1	78.1
Thousand pieces of steel weight ≈kg			-	-	-	-	-	-	-	-	-	-	-	-	-

Benifits of Grade 10.9 Hex Head Bolts

Befast’s Grade 10.9 hex head bolts are built to meet high-strength requirements while providing excellent durability. Our production process ensures that every bolt undergoes comprehensive testing, including hardness and fatigue analysis, so that they perform reliably under extreme conditions.
With our capacity for large-scale production, we provide rapid delivery times and highly competitive prices, making Befast the perfect choice for high-strength, large-volume fastening needs.

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