High Strength Steel/304 316 Stainless Steel Grade 8.8 10.9 12.9 B7 Double End Stud Wheel/Welding Stud Bolt and Fully Threaded Rod Bar Rod with Nuts

Product Description

Welcome to Qewitco!

    With an annual output of 8,000 tons, we manufacture a full range of fasteners — threaded rod,stud bolt, bolts, nuts, washers, self-drilling screws and more( — built to DIN, ISO and other international standards, so you can consolidate your sourcing in one place and cut procurement and logistics costs. Quality is safeguarded by our dedicated in-house QC team through incoming, in-process and outgoing inspections, with material certificates and test reports available upon request. We also support OEM & ODM customization: materials, dimensions and surface treatments (galvanizing, Dacromet, hot-dip galvanizing, etc.) can be tailored to your drawings, with pre-production samples for your confirmation. With stable lead times and reliable after-sales support — from product selection and order follow-up to after-sales service — we make your procurement smooth and worry-free.

Scroll down to explore our products, or contact us directly for a quotation and samples.

Product Description

Our products include threaded rods, wheel studs, and stud bolts, available in grades 8.8, 10.9, 12.9, B7, 304, and 316.
Our stud bolts include DIN 938, DIN 939, DIN 835, DIN 940-B, DIN 940-A, and extra-long studs (custom lengths available upon request).

Double End Studs

Main Features:

•  Double-ended thread design: Threads on both ends with plain shank in middle, can screw into two components simultaneously, no bolt head required.

•  Two shank types available: thin shank & heavy-duty thick shank for different load and assembly conditions.

•  Multiple materials & surface finishes: stainless steel, carbon steel; zinc-plated, yellow zinc-plated for good rust & corrosion resistance.

•  Manufactured per DIN / ISO standards, precise thread dimension, excellent interchangeability, compatible with standard hex nuts.

•  High strength & anti-vibration: uniform stress distribution, anti-loosening, suitable for heavy-load and repeated disassembly.

Core Advantages:

•  Ideal for blind-hole assembly: one end screws into blind hole of base component, the other end fastens mating parts, solves mounting issues where standard bolts cannot work.

•  Easy disassembly & protects base thread: only remove nuts during maintenance, studs stay embedded, prevent repeated wear of base internal threads.

•  Higher load-capacity for thick-shank type: larger-diameter plain shank delivers superior tensile & shear strength for heavy-duty applications.

•  Compact installation & space-saving: no bolt head, occupies less mounting space for confined structures.

•  Customizable sizes: thread size, length, shank diameter and surface treatment can be tailored for non-standard project requirements.

FAQ:

Q: How to choose thin-shank vs thick-shank studs?
A: Thin-shank for light-to-medium load general assembly; thick-shank for heavy-load and high-shear-force working conditions.

Threaded Rod

Main Features:

Fully-threaded full-length design: continuous threads along the whole bar, no plain shank, both ends can be fitted with nuts for clamping.

Wide size range: available in standard short pieces and extra-long custom bars, can be cut to required length, complete thread sizes.

Multiple materials & surface finishes: zinc-plated carbon steel, stainless steel, good anti-rust and anti-corrosion performance.

Compliant with DIN / ISO standards, high thread precision, perfect interchangeability with standard nuts, flat washers and spring washers.

Flexible assembly: bidirectional adjustment & tightening, compatible with combined installation of multiple nuts and washers.

Core Advantages:

Flexible length adaptation: long threaded rods can be cut on-site to fit any mounting span, no need for special pre-ordered bolt lengths.

Dual-side fastening & adjustable clearance: lock from both sides, freely adjust assembly gap and pre-tension force.

Excellent universality: assemble simply with nuts & washers, easy stock management, reduce fastener SKU varieties.

Usable as tie rod: long-form version features great tensile performance for tie-rod and hanger applications.

Great space compatibility: no bolt head, pass through through-holes, ideal for through-penetration fastening.

Common Application Scenarios:

Building MEP: ceiling hangers, cable tray suspension, pipe hanging & fixing.
Steel structure: tie rods, component through-connection, bracket mounting.
Mechanical equipment: frame assembly, machine base leveling, long-span through fastening.
Molds, tooling fixtures, guardrails and shelf assembly.
HVAC, fire-fighting, electrical equipment and factory infrastructure projects.
Maintenance & renovation projects; cut on-site to replace non-standard bolts.

Wheel Bolt/Knurled Round Head Stud Bolt

Standard: Custom Industrial Standard, RoHS & REACH Compliant 
Size: Dia. – M10 to M20, Length – 40mm to 130mm, Custom knurl section & thread length available 
Material: Carbon Steel, Stainless Steel (304/A2, 316/A4) 
Grade: 
8.8, 10.9(Carbon Steel) 
A2-50, A2-70, A4-70 (Stainless Steel) 
Finish: Blue White Zinc Plated, Yellow Zinc Plated, Passivated, Electropolished 

Customer Reviews

Factory And Company Profile

QINGDAO FASTENERS CO.,LTD

Headquartered in Qingdao, China, Qewitco is a British company with a global presence. Since 2004, we have earned a reputation as a leading supplier of industrial consumables and fasteners, serving customers across Europe, North America, Southeast Asia, and beyond.

Led by a British management team, Qewitco strictly adheres to British quality standards and excels in supply chain optimization. We source premium products from rigorously audited manufacturers in China, Taiwan, Malaysia, Vietnam, and Thailand, ensuring competitive pricing and reliable production.

With over 20 years of industry expertise, we provide tailored and cost-effective solutions to meet the unique needs of each partner. Our services include:

Personalized account management to align with your business objectives and timelines

Multi-stage quality assurance, from raw material inspection to finished product testing

Flexible, customized sourcing services for specialized or hard-to-source items

Customizable packaging and logistics solutions to optimize global distribution processes

With products exported to more than 35 countries, Qewitco is your trusted partner. Our mission is to exceed your expectations by ensuring seamless delivery from production to your warehouse. We combine Western business ethics with the strengths of Asian manufacturing to provide you with unparalleled value and service.

Why Choose Us

Best Competitive Advantages:

• British-owned, Qingdao-based — run under British management with international quality standards. Western business integrity meets competitive Asian manufacturing.
• 20+ years since 2004 — proven track record supplying distributors, manufacturers & engineering firms across Europe, North America & Southeast Asia.
• 3-stage QA — incoming material inspection → in-production follow-up → pre-shipment testing, lowering risk on bulk orders.
• One-stop flexible sourcing — standard fasteners plus hard-to-source non-standards from an integrated multi-supplier network, cutting your cost and communication load.
• Dedicated account manager — custom packaging and integrated logistics, delivering straight from factory to your warehouse.
• Free samples — buyers only cover the courier freight.
• Fast delivery — most sizes in stock; orders under 5,000 pcs ship in 5–7 days. Annual fastener capacity 8,000+ MT.

How to Place Your Order?

1. Send us your specifications and quantity

2. Receive a formal quotation within 24 hours

3. Confirm samples or place a trial order

4. Production starts — we handle the rest

Request Your Quote Today → [Send Inquiry / Contact Us]

Certifications

FAQ

Do you have your own production factory?

Yes, besides our own factories, Qewitco also has good business relationship with many other fastener, tool, and facilities mills in China & overseas.

How does your factory do regarding quality control?

Clear standards and written inspection records, including incoming material, each process control, final inspection, and customer's complaint. Daily record is traceable.

Do you have quality certification?

Yes, CE, SGS, ISO, etc.

What's the delivery time?

Delivery time ranges from 7 to 30 days depending on order quantity and urgency.

Is combination acceptable in one container?

Acceptable.

Do you factory have the capacity to help customer design develop new items?

Yes, Qewitco has its own product research & development department. With agreement, based on sample or spec. drawings, Qewitco would like to develop new items for special application.

Do you supply tools, facilities, including spare parts?

Yes. And, in accordance with tool / machine's models, Qewitco sends the diagram to you for reviewing and suggest you some easy-broken parts.

How is the payment terms?

For new customers, 30% / 50% in advance and 70% At Sight of Copy of B/L. With mutual learning / confidence, we accept to discuss new payment term.

How is your customer support after purchase?

We are committed to providing you with excellent after-sales service. If you encounter any quality issues, please kindly give feedback to Qewitco within 45 days.

How can you get a quote quickly?
Please email us with all the information you have, and if there are any details missing, feel free to send us pictures of the product or packaging so we can accurately determine your needs.

Can you offer detailed dimension drawings and specifications?
We have complete size data for all items. Feel free to contact us to receive the detailed product dimensions.

What types of threaded rods do you produce?
We supply fully threaded rod, half threaded stud and double end threaded bar, complying with DIN975 and DIN976 international standards, covering complete metric specifications from small size to heavy-duty large size.

What materials can be used for threaded rods?
Threaded rods are available in carbon steel, high tensile alloy steel and various stainless steel grades to meet different load-bearing and anti-corrosion requirements.

Can you customize threaded rods with special length, diameter and thread pitch?
Yes, we fully accept OEM customization. We can produce threaded rods with custom diameter, thread pitch and cutting length according to your drawings and technical parameters.

Can threaded rods be matched with your nuts and washers as a complete fixing set?
Sure. We support one-stop matching supply, threaded rods can be packaged together with matched hex nuts, spring washers and flat washers as a full fastening kit.