China Quality Inspection for Standard Screw - DIN931 Half Thread Hex Head Bolt Stainless Steel – Hongji manufacturers and suppliers

Quality Inspection for Standard Screw - DIN931 Half Thread Hex Head Bolt Stainless Steel – Hongji

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DIN931 Half Thread Hex Head Bolt Stainless Steel1

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			L≤125		9	10	11	12	13	14	16	18	20	22	26	30
			125＜L≤200		-	-	-	-	-	-	22	24	26	28	32	36
			L＞200		-	-	-	-	-	-	-	-	-	-	45	49
c			Min		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			Max		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			Max		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
			A	Min	1.46	1.86	2.36	2.86	3.32	3.82	4.82	5.82	6.78	7.78	9.78	11.73
			B	Min	-	-	-	-	-	-	-	-	-	-	-	-
d_w			A	Min	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			B	Min	-	-	-	-	-	-	-	-	-	-	-	-
e			A	Min	3.41	4.32	5.45	6.01	6.58	7.66	8.79	11.05	12.12	14.38	18.9	21.1
e			B	Min	-	-	-	-	-	-	-	-	-	-	-	-
k			Nominal		1.1	1.4	1.7	2	2.4	2.8	3.5	4	4.8	5.3	6.4	7.6
			A	Min	0.98	1.28	1.58	1.88	2.28	2.68	3.35	3.85	4.65	5.15	6.22	7.32
			A	Max	1.22	1.52	1.82	2.12	2.52	2.92	3.65	4.15	4.95	5.45	6.58	7.68
			B	Min	-	-	-	-	-	-	-	-	-	-	-	-
			B	Max	-	-	-	-	-	-	-	-	-	-	-	-
k₁			Min		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			Min		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
			A	Min	3.02	3.82	4.82	5.32	5.82	6.78	7.78	9.78	10.73	12.73	16.73	18.67
			B	Min	-	-	-	-	-	-	-	-	-	-	-	-
Thread length b					-	-	-	-	-	-	-	-	-	-	-	-
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	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	Min					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	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	1
d_a	Max					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	22	24	27	30	33	36	39
	A	Min				13.73	15.73	17.73	19.67	21.67	23.67	-	-	-	-	-
	B	Min				-	15.57	17.57	19.48	21.48	23.48	26.48	29.48	32.38	35.38	38.38
d_w	A	Min				20.5	22.6	25.3	28.2	30	33.6	-	-	-	-	-
d_w	B	Min				-	22	24.8	27.7	29.5	33.2	38	42.7	46.6	51.1	55.9
e	A	Min				24.49	26.75	30.14	33.53	35.72	39.98	-	-	-	-	-
e	B	Min				-	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	21	22.5	25
	A	Min				8.62	9.82	11.28	12.28	13.78	14.78	-	-	-	-	-
	A	Max				8.98	10.18	11.72	12.72	14.22	15.22	-	-	-	-	-
	B	Min				-	9.71	11.15	12.15	13.65	14.65	16.65	18.28	20.58	22.08	24.58
	B	Max				-	10.29	11.85	12.85	14.35	15.35	17.35	19.12	21.42	22.92	25.42
k₁	Min					5.96	6.8	7.8	8.5	9.6	10.3	11.7	12.8	14.4	15.5	17.2
r	Min					0.6	0.6	0.6	0.8	0.8	0.8	1	1	1	1	1
s	Max=Nominal					22	24	27	30	32	36	41	46	50	55	60
	A	Min				21.67	23.67	26.67	29.67	31.61	35.38	-	-	-	-	-
	B	Min				-	23.16	26.16	29.16	31	35	40	45	49	53.8	58.8
Thread length b						-	-	-	-	-	-	-	-	-	-	-

Detail drawing

DIN931 Half Thread Hex Head Bolt Stainless Steel4

The full thread of the bolt means that the bolt and the threaded rod are all threaded. The half thread screw is half threaded and half is polished rod.

The bolts are divided into two types: coarse and fine teeth according to the thread shape. The coarse tooth shape is not displayed in the bolt’s logo. Ordinary bolts can be divided into three grades: A, B, and C according to the production accuracy. Grades A and B are refined bolts, and grade C is rough bolts. For connecting bolts for steel structures, unless otherwise specified, they are generally ordinary rough grade C bolts.

Stainless steel bolts refer to bolts made of stainless steel, including stainless steel SUS201 bolts, stainless steel SUS304 bolts, stainless steel SUS316 bolts, and stainless steel SUS316L bolts. The performance grades of stainless steel bolts, studs and studs are divided into 10 grades: from 3.6 to 12.9. The number before the decimal point represents 1/100 of the tensile strength limit of the material, and the number after the decimal point represents 10 times the ratio of the yield limit to the tensile strength limit of the material.

Packing

We provide a variety of different packaging to meet different shipping environment and cost control. The most common types of packaging are ton packs, woven bags, boxes in bulk, boxes in boxes, plus pallets or wooden cases to meet sea or air transport requirements. Below are photos of the different packaging types we offer for reference.

Packaging and delivery
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Packaging and delivery3

About us

Yongnian Hongji
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To constantly improve the management system by virtue of the rule of "sincerely, good faith and quality are the base of enterprise development", we widely absorb the essence of related products internationally, and constantly develop new products to meet the demands of customers for Quality Inspection for Standard Screw - DIN931 Half Thread Hex Head Bolt Stainless Steel – Hongji , The product will supply to all over the world, such as: Salt Lake City, Armenia, Birmingham, We always adhere to follow the honesty, mutual benefit, common development, after years of development and the tireless efforts of all staff, now has perfect export system, diversified logistics solutions, comprehensive meet customer shipping, air transport, international express and logistics services. Elaborate one-stop sourcing platform for our customers!

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