High Tension 1/2" Threaded Hex Bolt and Nut Manufacturer Full Thread Hex Head Bolt Stainless Steel Hex Bolt and Nut Size DIN933 M16 Hex Bolt with Nut

• Customization: Available
• Material: Stainless Steel
• Type: Hexagon Head
• Model NO.: DIN933
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: DIN
• Grade: 4.8,5.8,8.8,9.8,10.9,12.9
• Application: Machinery, Chemical Industry, Environmental, Building
• Finish: Plain
• Name: Full Thread Hex Head Bolt / Hex Bolt DIN933
• Brand Name: Goshen
• Samples: Free
• Delivery: 3-20days
• Payment Term: T/T or L/C
• Packing: Carton+Pallet
• Size: M3-100
• Delivery Time: 7-25 Days
• Certification: ISO, RoHS, SGS, TUV
• Transport Package: Bags+Cartons+Pallets
• Specification: DIN, ISO, GB, ANSI, Bs
• Trademark: Goshen
• Origin: Zhejiang, China
• HS Code: 7318151001
• Production Capacity: 500ton/Year
• Package Size: 25.00cm * 15.00cm * 10.00cm
• Package Gross Weight: 25.000kg

Product Description

Product Description

High-quality 304/316 stainless steel external hexagonal bolt three-piece assembly 

Bolt + Flat Washer + Spring Washer + Nut as a complete set | High-strength anti-loosening fastener
This series of products are stainless steel hexagon bolts in three combinations (also known as bolt sets/combined screws), made of high-quality 304 (A2) or 316 (A4) stainless steel. Each set includes one hexagon bolt, one flat washer, one spring washer and one hexagonal nut. They are factory-assembled and ready for use, eliminating the hassle of purchasing accessories separately. The spring washer provides continuous elasticity, effectively preventing loosening due to vibration; the flat washer increases the contact area and protects the connection surface from being scratched. The product head is clearly marked with steel stamps (such as A2-70, A4-70), and the threads pass the inspection by the stop gauge, are easy to screw in and have strong locking force. They are widely used in mechanical equipment, steel structures, power facilities, chemical pipelines and other scenarios that require high strength, high corrosion resistance and anti-loosening connections.

Drawings & Dimensions

Detailed CAD drawings and dimensional diagrams are available for download here or upon inquiry. Our engineering team can provide tailored designs to meet specific project requirements.

The main business scope of the company

We are a professional China screws manufacturer with over 15 years of deep expertise in the fasteners factory industry. Our diverse product portfolio covers mainstream categories, including 304 stainless steel screws, self tapping screws, self drilling screws (Tek screws), machine screws, wood screws, as well as eye screws and hex bolts.
Strictly compliant with DIN, ANSI, BS, and JIS international standards, our products are available in a full range of drive types, including Phillips, Pozi, and Torx drives. We also offer comprehensive custom screws services tailored to your specific requirements. Leveraging our competitive factory direct price and fast delivery advantages, we proudly serve as a reliable China supplier for global wholesale hardware distributors, engineering procurement managers, and OEM clients seeking high-quality bulk screws. We are committed to providing free samples available for your testing needs, and all our products fully comply with RoHS and REACH environmental standards.

Features

Complete set supply, saving time and effort

The equipment is fully assembled upon leaving the factory, including bolts, washers, spring washers and nuts.

Advantages: Buyers do not need to separately purchase the four types of components, saving procurement time and logistics costs. It can be used directly after opening the box, significantly improving installation efficiency, especially suitable for large-scale assembly operations.

spring washer

flat washer

Head stamp identification, with genuine material traceability

The spring washer provides continuous elastic pressure, counteracting the tendency of the nut to loosen.Advantages: In environments with vibrations, impacts, and dynamic loads, it effectively prevents the nut from loosening and falling off, ensuring the long-term safe operation of the equipment and reducing the cost of subsequent maintenance.

The flat washer is placed between the nut and the connecting piece to distribute the pressure.

Advantages: Prevents the nut from directly contacting and scratching the surface of the connected piece, and at the same time increases the force-bearing area, avoiding deformation or damage to the sheet material due to excessive local pressure.

Head stamping identification. The material is genuine and traceable. Each bolt head is marked with a clear material grade stamp (A2-70 represents 304 stainless steel, A4-70 represents 316 stainless steel).
Advantages: Rejects substandard products. Buyers can verify through a spectrometer at any time. 70 represents the minimum tensile strength of 700 MPa, ensuring safe and reliable high-strength connections.

Professional test data

Tensile strength test: The measured tensile strength of materials A2 - 70/A4 - 70 is all ≥ 700 MPa, meeting the requirements for high - strength industrial connections.

Salt spray test: For the 304 material, there is no red rust after 72 hours of neutral salt spray test; for the 316 material, it can remain free of red rust for over 200 hours.

Anti - loosening test: When used in conjunction with a spring washer, after continuous vibration on a vibration table for [X] hours, the pre - tightening force retention rate of the nut is ≥ 90%, indicating a remarkable anti - loosening effect.

Gauge inspection: 100% thread gauge inspection to ensure smooth engagement with the nut and no sticking.

Specification

Product Name	Stainless steel external hexagonal bolt set (bolt + flat washer + spring washer + nut)
Material	SUS304 (A2-70) / SUS316 (A4-70)
Combined content	Hex head bolt × 1 + Flat washer × 1 + Spring washer × 1 + Hexagonal nut × 1
Thread specification	M3,M4,M5,M6,M8,M10,M12,M16,M20
Nominal length	8mm - 300mm (Supporting non-standard customization)
Strength of extension	≥ 700 MPa (A2-70/A4-70)
Standard	DIN933/DIN931 (bolts), DIN125 (washers), DIN127 (spring washers), DIN934 (nuts)
Surface Treatment	Natural (shiny finish), Anodizing (customized)
Packaging	Bulk / Carton / Wooden Box / Pallet, with customization of labels available
Delivery time	Regular spot delivery within seconds / Customized non-standard products 30 days for delivery

Application Scenario

APPLICATION SCENARIO

New Energy / Solar Mounting: Solar panel mounting, component mounting blocks (using stainless steel self-drilling screws and hexagonal bolts, resistant to outdoor exposure and rain). 
 
Construction: Curtain wall keel connection, steel structure assembly, window and door fixation (requiring high strength and large torque anti-shear). 
 
Furniture: Panel furniture assembly, hardware fixation (using countersunk wood screws and machine teeth screws, with smooth and aesthetically pleasing surface). 
 
Electronics & Machinery: PCB board fixation, instrument housing assembly (using precision miniature screws and internal hexagonal screws).

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One-stop Service

If you need a complete set of hardware fastening component solutions, please click the above link. We offer one-stop delivery to ensure you can get everything in one place, saving you both time and logistics costs!"

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The DIN933/DIN931 standard offers both full teeth and half teeth options, with a wide range of specifications available.

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Customized service

It is used in conjunction with the external hexagonal bolts, of the same material and grade.

It is used in conjunction with the external hexagonal bolts, of the same material and grade. Increase the force-bearing area to prevent loosening and protect the connection surface.

Customization based on drawings and samples, providing professional solutions for special specifications.

Company Profile

JIAXING GOSHEN HARDWARE CO.,LTD

Since starting our business in 2010, we have adhered to the concept of "exquisite manufacturing". Beginning from a small processing factory, we have gradually developed into a modern warehouse-style factory equipped with 30 automated cold heading machines, threading machines and fully automatic screening machines. We focus on addressing the pain points of "uneven quality and delayed delivery" that customers encounter in the purchase of fasteners, and have now grown into an influential fastener supplier in the region.

Jiaxing Goshen Hardware Co., Ltd is located in Jiaxing Intelligence Innovation Park, the city is famous as the "Hometown of Fasteners". It close to Hangzhou Bay Bridge, Shanghai Port, Ningbo Port and Jiaxing Zhapu port, which make it have strategic and convenient transportation. As a leading integrated manufacturer and trader, we pride ourselves on delivering top-tier fasteners that are the backbone of industries worldwide. Our comprehensive range of products, from standard screws and bolts to customized precision components, is crafted with meticulous attention to detail and stringent quality controlOur company not only has advanced equipments, excellent quality and humanized management but also has outstanding foreign trade salesmen to supply best service for our customers. Please trust us! "Quality First and Customer service First  is our tenet and goal. And all this time, we are devoting ourselves to developing products for customer`s requirements and establishing a long-term business relations with our esteemed customers. We sincerely hope to cooperate with clients from home and abroad, in order to seek common developments.

Technological Process

Cold heading forming → Thread rolling → Heat treatment → Surface treatment → Quality inspection and packaging

From the import of raw materials to the final delivery of the finished products, we strictly implement a three-level quality control system of "incoming material inspection + process inspection + full inspection of finished products". We use imported multi-station cold heading machines to ensure high concentricity and precise dimensions of the products, and guarantee that every screw is of high quality.

Authentic certification certificate

We are well aware of the strict compliance requirements of B-end buyers. Our company has obtained the ISO 9001:2015 quality management system certification; all exported products are equipped with SGS test reports, which comply with RoHS 2.0 and REACH SVHC EU environmental protection regulations, ensuring smooth customs clearance and no trade barriers for the products.

FAQ

Q: Are you a trading company or a manufacturer?
A: We are a direct manufacturing factory with a complete production chain, integrating cold heading, thread rolling, heat treatment, and surface finishing. We produce and export directly, offering you the most competitive factory direct price without any middleman markups
 
Q: Can you provide free samples?
A: Yes! For standard products, we offer free samples for your quality testing. You only need to cover the international courier shipping cost (freight collect or prepaid), and the sample fee will be fully waived. For custom samples, a small mold or setup fee may be charged, but it will be fully refunded upon confirmation of the bulk order.
 
Q: Do your products meet European and American environmental standards?
A: Absolutely. All our screws, bolts, and fasteners are strictly produced to international standards and are fully RoHS 2.0 compliant, meeting REACH SVHC regulations. We can provide third-party SGS test reports to ensure your goods clear customs smoothly in EU and US markets.
 
Q: What payment terms do you support?
A:  We primarily accept T/T (Telegraphic Transfer), generally 30% deposit in advance, and 70% balance against the copy of the Bill of Lading (B/L). For regular and trustworthy long-term partners, we can negotiate more flexible payment terms, such as L/C at sight or monthly settlements.
 
Q: Can you provide custom packaging?
A:Of course. We highly value the retail and branding needs of our B2B clients. We can customize inner boxes, outer cartons, stickers, labels, and packaging with your company LOGO according to your design requirements. Whether it's small retail packaging for supermarket shelves or industrial pallet packaging for bulk use, we can perfectly match your needs.