Since 2005, ZhongKe has manufactured industrial fasteners for clients in 30+ countries. From standard spec to custom drawings — bolts, nuts, screws, washers, rivets, and pins. Consistent quality, on-time delivery.
Years in Business
Product Specifications
Tons Annual Capacity
Grade 8.8 – 12.9
DIN / ISO / ANSI
Carbon / Stainless
Made to Drawing
From raw material to finished fastener
Located in Dongtai, Jiangsu, our 15,000 m² facility houses multi-station cold heading machines, CNC turning centers, continuous mesh-belt heat treatment lines, and automated optical sorting. Every batch is traceable from steel lot to shipment.
Certified quality management system
Multi-station headers, CNC, robots
FOB / CIF / DDP worldwide
Standard 7 days, custom 15-25 days
6 Categories · 5,000+ Specs · GB / DIN / ISO / ANSI / BS / JIS
Hex · Flange · Carriage
Hex · Lock · Flange
Self-Tap · Machine · Wood
Flat · Spring · Lock
Blind · Solid · Drive
Dowel · Taper · Cotter
| Product | Size Range | Material / Grade | Standard | Finish |
|---|
Precision-made fasteners for every application
Full & half thread, metric & imperial
Vibration-proof, reusable
Pan & countersunk head types
Standard & heavy-duty series
Multi-grip range, various materials
Precision ground, hardened
5-step quality-controlled production
Certified steel, full mill test reports, incoming inspection
Multi-station formers, high-speed thread rolling
Quench & temper, case hardening, controlled atmosphere
Zinc, HDG, Dacromet, black oxide, passivation
Optical sorting, dimensional checks, export-ready packing
Quick comparison of common fastener materials
| Material | Grade | Tensile (MPa) | Yield (MPa) | Best For | Corrosion |
|---|---|---|---|---|---|
| Carbon Steel | 4.8 | 420 | 340 | General purpose, indoor | Low |
| Carbon Steel | 8.8 | 800 | 640 | Automotive, machinery | Low |
| Alloy Steel | 10.9 | 1,040 | 940 | High-stress structural | Low |
| Alloy Steel | 12.9 | 1,220 | 1,100 | Critical joints, engines | Low |
| SS304 (A2) | A2-70 | 700 | 450 | Food, marine, outdoor | High |
| SS316 (A4) | A4-70 | 700 | 450 | Chemical, offshore, salt | Very High |
| Brass | C3604 | 350 | 200 | Electrical, decorative | Excellent |
Everything you need from a fastener partner
15,000 m² with cold heading, stamping, CNC, and heat treatment lines
Hardness, tensile, spectrometer, salt spray, torque testing on-site
Common sizes in stock — from trial orders to container loads
Our engineers help with material selection, plating specs, and failure analysis
What buyers typically ask
Standard parts start from 500–1,000 pcs per size. Custom parts depend on complexity — typically 200–500 pcs. We're flexible on trial orders for new clients. Contact us with your requirements and we'll work with you.
Yes. We provide free samples of standard products (you cover shipping). For custom parts, a small tooling fee applies, refundable on your first production order.
ISO 9001:2015. We also provide material test certificates (MTC / mill certs), PPAP Level 2 upon request, and can arrange third-party inspection (SGS, TUV, BV) at your request.
Standard parts: 5–7 working days. Custom parts: 15–25 working days. Urgent orders can be expedited — please let us know when you inquire.
Absolutely. Send us your drawing (PDF / DWG / STEP), material spec, and quantity. We'll review within 24 hours and provide a quote with lead time. Non-standard sizes, special threads, and custom heads are all possible.
Zinc plating (clear/blue/yellow/black), Hot-dip galvanized, Dacromet / Geomet, Black oxide, Phosphate, Nickel, Chrome, Passivation (for stainless), and more. Tell us your environment and we'll recommend the right finish.
ISO 9001:2015
CE Certified
ANSI/ASTM
DIN Standard
BS Standard
JIS Standard
Full spec sheets, material data, and pricing guide — ready to share with your team
Response within 24 hours
+86 138-0722-1298
sales@zhongke-fastener.com
No.18 Kaizhuang, Qindong Town, Dongtai, Jiangsu, China
Tailuo | +86 138-0722-1298