Hex bolts and nuts are widely used fasteners, both at home and abroad. These fasteners are known for their versatility and strength. They come in various sizes, with threads ranging from M3 to M64, including M64, and nominal lengths from 10mm to 500mm. The standard specifications for these bolts are outlined in DIN931 partial thread, DIN933 full thread, ISO4014, ISO4017, and the American standard ASME B18.2.1. These standards ensure that the hex bolts meet specific requirements and can be used across different industries and applications. Whether it's securing structures or assembling machinery, hex bolts and nuts are the go-to choice for professionals and individuals alike.

A hex bolt is a widely used fastener that comprises a cylindrical screw and a hexagonal head. Its primary function is to connect and secure two components with through-holes, usually through the use of a nut. This fundamental fastener is a staple in the world of mechanics and engineering, making it one of the most popular products available.

Jiangsu Jinrui Metal Products Co., Ltd. is a leading supplier of Hex bolts in China, offering a wide range of sizes to meet all your construction needs. With over 23 years of experience, we have established ourselves as experts in the industry. Whether you require standard Hex bolts or have specific product requirements, we are here to deliver. Our dedicated team is committed to providing you with the perfect hex bolts that align with your unique specifications. Trust us to provide the high-quality products you deserve.

At Jinrui, we take pride in our ability to deliver high-quality hex bolts to meet the unique needs of our customers. Our product line includes a wide range of hexagonal bolts, and we're always willing to customize our offerings to ensure that you get precisely what you need. Whether you require a specific coating, size, or specification, we have the expertise and manufacturing capabilities to deliver the ideal hex bolt for your requirements. As an experienced hex bolt manufacturer, we're committed to providing our customers with unmatched service and support, and we're always looking for ways to improve our products and processes to better meet your needs. Contact us today to learn more about our hexagonal bolts and how we can help you achieve your goals.

As a leading hex bolt manufacturer, our products boast of full material traceability that is substantiated by corresponding quality reports on the high-grade raw materials utilized. We take pride in producing hex bolts in various sizes and dimensions ranging from M3-M64, with lengths that span from 10mm-3000mm. Our commitment to quality assurance ensures that all our hex bolts consistently meet the required standard.
Our hex bolts are expertly crafted using high-quality steel, and the threads boast of precise specifications such as 6g, 6h, and more. They are smooth when used in combination with nuts, ensuring a snug and secure fit. Furthermore, we apply a corrosion-resistant coating to the bolts which renders it stronger, more resilient and durable.
At our company, we're dedicated to providing our customers with the highest quality hex bolts that guarantee impressive performance, whether it's for industrial or personal use. Our exceptional attention to detail, premium raw materials, and top-notch manufacturing process ensures that our hex bolts maintain an unbeatable quality level unparalleled in the industry.

d(DIN931)		M1.6	M2	M2.5	M3	(M3.5)	M4	M5	M6	(M7)	M8	M10	M12
P		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	-	-	-	-	-	-	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
	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
da	max	2	2.6	3.1	3.6	4.1	4.7	5.7	6.8	7.8	9.2	11.2	13.7
ds	max	1.6	2	2.5	3	3.5	4	5	6	7	8	10	12
	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
dw	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
e	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
k	max	1.1	1.4	1.7	2	2.4	2.8	3.5	4	4.8	5.3	6.4	7.6
	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
	min	1.22	1.52	1.82	2.12	2.52	2.92	3.65	4.15	4.95	5.45	6.58	7.68
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	3.2	4	5	5.5	6	7	8	10	11	13	17	19
	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

d(DIN931)		(M14)	M16	(M18)	M20	(M22)	M24	(M27)	M30	(M33)	M36	(M39)
P		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	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
	max	0.6	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	1
da	max	15.7	17.7	20.2	22.4	24.4	26.4	30.4	33.4	36.4	39.4	42.4
ds	max	14	16	18	20	22	24	27	30	33	36	39
	min	13.73	15.73	17.73	19.67	21.67	23.67	-	-	-	-	-
dw	min	20.5	22.6	25.3	28.2	30	33.6	-	-	-	-	-
e	min	24.49	26.75	30.14	33.53	35.72	39.98	-	-	-	-	-
k	max	8.8	10	11.5	12.5	14	15	17	18.7	21	22.5	25
	min	8.62	9.82	11.28	12.28	13.78	14.78	-	-	-	-	-
	min	8.98	10.18	11.72	12.72	14.22	15.22	-	-	-	-	-
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	22	24	27	30	32	36	41	46	50	55	60
	min	21.67	23.67	26.67	29.67	31.61	35.38	-	-	-	-	-

Standard	Material	Grade	Finish	Thread
DIN933 DIN931 ISO4014 ISO4017 ASME B 18.2.1	carbon steel	4.6 4.8 5.8 8.8 10.9 12.9 A2-70 A4-70	Plain	UNC
			Zinc plated
	Alloy steel		Yellow zinc plated
			PTFE
	Stainless steel		Black Oxide	UNF
			Dacromet
	Other		HDG
			Other

Hex head bolts are used in a wide range of applications. They are used in most machinery and equipment, as well as in infrastructure fields such as construction and transportation. For example, hex bolts are used in the fields of petrochemical industry, automobile manufacturing, construction, pressure piping, rail transit, steel structure engineering, large-scale power generation machinery facilities and infrastructure. Basically, they can be seen in all corners of the city. Of course, in some specific positions in these areas, some other products will also be used, such as rail bolts, flange nuts, U-bolts, flat head hexagon bolts, T-bolts, round head square neck bolts and hex cap screw, etc. If you are not familiar with the usage scenario, you are welcome to consult us at any time, we are a professional hex bolts manufacturer.

Jiangsu Jinrui Metal Products Co., Ltd. was established in 2018 and is located in Hai'an High-tech Zone, Jiangsu Province, China. It is a professional fastener manufacturer in China. Jinrui's production management is inherited from the parent company Shanghai Jinrui Standard Parts Co., Ltd. Come, all production technicians have more than 8 years of rich production experience. At present, the factory covers an area of 30,000 square meters, with a total investment of more than 100 million yuan. The annual output of only one product of hexagonal bolts is about 5,000 tons. The business of hexagonal bolts covers more than 20 countries and regions around the world, so it can also be said that Jiangsu Jinrui Metal Products Co., Ltd. is also a professional hex bolt manufacturer. The company has passed the ISO9001:2015 quality system certification and IATF16949:2016 automotive quality management system certification, and we have also insured the "Global Product Liability Insurance" of the People's Insurance Company of China. At present, the company is equipped with advanced multi-functional cold heading equipment, threading machine, nut machine and large hot heading equipment, as well as supporting testing equipment such as magnetic testing machine, metallographic analyzer, salt spray tester, etc. Professional testing personnel guarantee Pass a defective product. Various high-quality fasteners and non-standard products that meet GB, DIN, ANSI, JIS and ISO standards are manufactured through our R&D department. Welcome to Jinrui to visit the factory and we are looking forward to cooperating with you.

Q1: Are you a factory or trading company?

A: We are manufacturer of hex bolts and nut for more than 20 years . We have two factories, one in Shanghai and the other in Jiangsu. Our production capacity can be 20000 + tons per year. We can customize our products according to customers' requirements, drawings and samples.

Q2: How many years you do foreign trade?

A: We have more than 20 years experience in exporting products to worldwide countries with our best quality. Now we have exported more than 40 countries, such as Spain, Germany, Italy, Belgium, United Kingdom, Lithuania, USA, Canada, Australia, Singapore,Japan, Thailand, Malaysia, South Korea,Indonesia, Egypt, Philippines and so on.

Q3: Do you have enough outputs?

A: We have enough stock in warehouses with abundant capital. We offer 24-hour services. For most common standards, we have them on stock, such as hex bolts, hex nuts, etc.

Q4: How to ensure that every process's quality?

A: First, we have technical drawings for each product when producing.

Second, our workers most have more than 10-years experience of doing hex bolts.

Third, our QC people will do inspection every 2 hours. If finding the bad parts, they will stop the porduction immediately.

Then,the finished parts will be checked again before shipment which insures every product's quality.

Q5: How to ensure the safety of long-distance transportation?

A: We pack into cartons first, and then pack cartons on pallets. The pallet is very easy to lift by Forklift wihch will protect the cartons from damage. Professional packing teams which keep every packing safely.

Q6: What products can you customize?

A:One is standard parts, such as DIN933, hex bolts. The other is Non-standard parts. If you want standard parts, you can tell the standard, size, grade(material) ,coating and quantity. For example, you want to buy DIN933, M12X60,grade 8.8, zinc plated and 20000pcs.

If you want non-standard parts, you can show us samples, drawings or detail descriptions. Then our engineer will do the technical drawings for you.

There are many, such as hexagon bolts, flange bolts, round head square neck bolts, as well as track bolts, U-bolts, T-bolts, flat head hexagon bolts, hex nuts, hex flange nuts .

Q7: Can you provide some sample?

A: Samples can be provided as your requirements.

http://www.jinrui-bolts.com/