DIN 960 Black Oxide Fine Thread Hexagon Bolts (Partial Thread)

Our DIN 960 Black Oxide Hexagon Bolts are high-strength fasteners engineered with metric fine threads and a partial thread design. The fine thread pitch provides superior self-locking properties and higher torque capacity compared to standard coarse-thread bolts. The black oxide finish offers a sleek, anti-reflective surface with moderate corrosion resistance, ideal for industrial, automotive, and machinery applications where precision fit and vibration resistance are critical.

Description

Product Details

Name	Hex Bolts	Materials	Carbon Steel/Stainless Steel
Standards	DIN 960	Grade	4.8/8.8/10.9/12.9 A2-70 A4-70 A4-80
Mechanical Properties	ISO 898-1	Threads	Metric fine thread
Size	M8-M100	Surface finish	ZP\HDG\BLACK\Dacromet etc.
Length	20-200mm	Samples	Available

Product Parameters

Screw Thread			M8	M10	M12	(M14)	M16	(M18)	M20	(M22)	M24	(M27)	M30	(M33)	M36	(M39)
d			M8	M10	M12	(M14)	M16	(M18)	M20	(M22)	M24	(M27)	M30	(M33)	M36	(M39)
P	Pitch	Fine thread-1	1	1	1.5	1.5	1.5	2	1.5	2	2	2	2	2	3	3
P	Pitch	Fine thread-2	-	1.25	1.25	-	-	1.5	2	1.5	1.5	-	-	-	-	-
b	L≤125		22	26	30	34	38	42	46	50	54	60	66	72	78	84
	125＜L≤200		28	32	36	40	44	48	52	56	60	66	72	78	84	90
	L＞200		41	45	49	53	57	61	65	69	73	79	85	91	97	103
c	min		0.15	0.15	0.15	0.15	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.3
c	max		0.6	0.6	0.6	0.6	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	1
da	max		9.2	11.2	13.7	15.7	17.7	20.2	22.4	24.4	26.4	30.4	33.4	36.4	39.4	42.4
ds	max		8	10	12	14	16	18	20	22	24	27	30	33	36	39
	Grade A	min	7.78	9.78	11.73	13.73	15.73	17.73	19.67	21.67	23.67	-	-	-	-	-
	Grade B	min	7.64	9.64	11.57	13.57	15.57	17.57	19.48	21.48	23.48	26.48	29.48	32.38	35.38	38.38
dw	Grade A	min	11.6	15.6	17.4	20.5	22.5	25.3	28.2	30	33.6	-	-	-	-	-
dw	Grade B	min	11.4	15.4	17.2	20.1	22	24.8	27.7	29.5	33.2	38	42.7	46.6	51.1	55.9
e	Grade A	min	14.38	18.9	21.1	24.49	26.75	30.14	33.53	35.72	39.98	-	-	-	-	-
e	Grade B	min	14.2	18.72	20.88	23.91	26.17	29.56	32.95	35.03	39.55	45.2	50.85	55.37	60.79	66.44
k	Nominal Size		5.3	6.4	7.5	8.8	10	11.5	12.5	14	15	17	18.7	21	22.5	25
	Grade A	min	5.15	6.22	7.32	8.62	9.82	11.28	12.28	13.78	14.78	-	-	-	-	-
	Grade A	max	5.45	6.58	7.68	8.98	10.18	11.72	12.72	14.22	15.22	-	-	-	-	-
	Grade B	min	5.06	6.11	7.21	8.51	9.71	11.15	12.15	13.65	14.65	16.65	18.28	20.58	22.08	24.58
	Grade B	max	5.54	6.69	7.79	9.09	10.29	11.85	12.85	14.35	15.35	17.35	19.12	21.42	22.92	25.42
k1	min		3.54	4.28	5.05	5.96	6.8	7.8	8.5	9.6	10.3	11.7	12.8	14.4	15.5	17.2
r	min		0.4	0.4	0.6	0.6	0.6	0.6	0.8	0.8	0.8	1	1	1	1	1
s	max=nominal size		13	17	19	22	24	27	30	32	36	41	46	50	55	60
	Grade A	min	12.73	16.73	18.67	21.67	23.67	26.67	29.67	31.61	35.38	-	-	-	-	-
	Grade B	min	12.57	16.57	18.48	21.16	23.16	26.16	29.16	31	35	40	45	49	53.8	58.8

Screw Thread			M42	(M45)	M48	(M52)	M56	(M60)	M64	(M68)	M72	(M76)	M80	M90	M100
d			M42	(M45)	M48	(M52)	M56	(M60)	M64	(M68)	M72	(M76)	M80	M90	M100
P	Pitch	Fine thread-1	3	3	3	3	4	4	4	4	4	4	4	4	4
P	Pitch	Fine thread-2	-	-	-	-	-	-	-	-	-	-	-	-	-
b	L≤125		90	96	102	-	-	-	-	-	-	-	-	-	-
	125＜L≤200		96	102	108	116	124	132	140	148	158	164	172	192	-
	L＞200		109	115	121	129	137	145	153	161	169	177	185	205	225
c	min		0.3	0.3	0.3	0.3	-	-	-	-	-	-	-	-	-
c	max		1	1	1	1	1	1	1	1	1	1	2	2	2
da	max		45.6	48.6	52.6	56.6	63	67	71	75	79	83	87	97	108
ds	max		42	45	48	52	56	60	64	68	72	76	80	90	100
	Grade A	min	-	-	-	-	-	-	-	-	-	-	-	-	-
	Grade B	min	41.38	44.38	47.38	51.26	55.26	59.26	63.26	67.26	71.26	75.26	79.26	89.13	99.13
dw	Grade A	min	-	-	-	-	-	-	-	-	-	-	-	-	-
dw	Grade B	min	59.9	64.7	69.4	74.2	78.7	83.4	88.2	92.9	97.7	102.4	107.2	121.1	135.4
e	Grade A	min	-	-	-	-	-	-	-	-	-	-	-	-	-
e	Grade B	min	71.3	76.95	82.6	88.25	93.56	99.21	104.86	110.51	116.16	121.81	127.46	144.08	161.03
k	Nominal Size		26	28	30	33	35	38	40	43	45	48	50	57	63
	Grade A	min	-	-	-	-	-	-	-	-	-	-	-	-	-
	Grade A	max	-	-	-	-	-	-	-	-	-	-	-	-	-
	Grade B	min	25.58	27.58	29.58	32.5	34.5	37.5	39.5	42.5	44.5	47.5	49.5	56.4	62.4
	Grade B	max	26.42	28.42	30.42	33.5	35.5	38.5	40.5	43.5	45.5	48.5	50.5	57.6	63.6
k1	min		17.9	19.3	20.9	22.8	24.2	26.2	27.6	29.8	31.2	33.2	34.6	39.5	43.7
r	min		1.2	1.2	1.6	1.6	2	2	2	2	2	2	2	2.5	2.5
s	max=nominal size		65	70	75	80	85	90	95	100	105	110	115	130	145
	Grade A	min	-	-	-	-	-	-	-	-	-	-	-	-	-
	Grade B	min	63.1	68.1	73.1	78.1	82.8	87.8	92.8	97.8	102.8	107.8	112.8	127.5	142.5

Key Features & Benefits

l Fine Thread Design: Lower thread pitch ensures greater self-locking capability and higher torque transmission compared to coarse thread bolts

l Partial Thread Configuration: Smooth shank under the head provides precise alignment and superior shear strength

l High-Strength Grades: Available in property classes 8.8 and 10.9 from alloy steel, with tensile strengths of 800 MPa and 1040 MPa respectively

l Black Oxide Finish: Provides a uniform, non-reflective surface with improved lubricity and moderate corrosion protection

l DIN 960 Compliance: Manufactured to strict dimensional standards; compatible with ISO 8765

l Metric Fine Thread: Available in various pitches such as M10x1.25, M16x1.5, M20x1.5

Strength Grade Comparison

Grade	Tensile Strength	Yield Strength	Best For
8.8	800 MPa	640 MPa	General industrial, machinery
10.9	1,040 MPa	940 MPa	High-strength automotive, heavy equipment

Intended Applications

l Automotive & Commercial Vehicles: Engine components, transmission assemblies, chassis connections, suspension systems

l Heavy Machinery: Construction equipment, agricultural machinery, industrial gearboxes

l Structural & Bridge Construction: High-load structural connections subject to vibration

l Instrumentation & Precision Equipment: Applications requiring precise torque and self-locking properties

l General Engineering: Fixtures, jigs, and equipment where fine thread adjustment is needed

Ordering Information

Specify: Size x Length / Strength Grade / Finish / Quantity

Example: M10 x 1.25 x 60mm – Grade 10.9 – Black Oxide – 100 pcs

Example: M20 x 1.5 x 130mm – Grade 10.9 – Black Oxide – 120 pcs

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