Custom Bolt Nut Manufacturer , Hex/Flange Bolts & Nuts OEM for Automotive Construction
Core Products & Services
Product Range
Hex Bolts/Nuts: Standard & non-standard sizes (M3–M30 / #4–1"), available in full-thread, half-thread, and fine/coarse pitch options.
Flange Bolts/Nuts: Integrated flange design for anti-loosening and vibration resistance, ideal for automotive chassis and structural steel connections.
Custom Assemblies: Pre-assembled with washers, spring lock washers, or thread-locking adhesive coatings.
Material Expertise
Automotive: Lightweight titanium (Grade 5), high-strength alloy steel (Grade 10.9), and heat-resistant stainless steel (A286).
Construction: Hot-dip galvanized carbon steel (ASTM A153), stainless steel (304/316), and weathering steel (ASTM A588).
Surface Treatments: Dacromet® coating, phosphating, nickel plating, and Xylan® coating (chemical resistance).
Industry-Specific Solutions
Automotive: IATF 16949 certified for precision applications like engine mounts, transmissions, and frame assemblies.
Construction: ISO 898-1/ASME B18.2.1 compliant bolts for bridges, steel structures, and heavy machinery.
Technical Capabilities & Advantages
✅ Precision Manufacturing
Cold Heading/Hot Forging: Mass production with ±0.02mm tolerance for high-strength fasteners.
Thread Rolling: CNC thread rolling machines ensure ISO 68-1 compliant thread accuracy.
✅ Certifications & Testing
Automotive: 1000+ hour salt spray testing (ASTM B117), fatigue life testing (SAE J429).
Construction: Tensile strength testing (≥800 MPa), Rockwell hardness testing (HRC 22–34).
Global Standards: ISO 9001, IATF 16949, CE, ASTM F568M.
✅ OEM/ODM Support
Design Conversion: 1:1 replication from CAD drawings or samples, supporting metric/imperial conversions.
Custom Packaging: Anti-rust bags, blister packs, and branded labeling for automotive JIT delivery.
Prototyping: MOQ 500 pieces, 5–7 days lead time for rapid validation.
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More Detail Informations
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Available Material
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1.Stainless Steel: SS303, SS304, SS316, SS410, SS420;
2.Carbon steel: C1006,C1010,C1018,C1022,C1035K,C1045; 3.Brass: C3602,C3604,Hpb59,Hpb62,Hpb65,Hpb58,Hpb70 ; 4.Aluminum: Al6061, Al6063 etc or as your requirements |
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Head type
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CSK Head,Pan Head,Truss Head,Hexagon Head,Round Head,Oval Head,Button Head,Cap Head,Cheese Head,etc.
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Hardness
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Carbon Steel:HRC:28~35 ,HV450~700
Alloy Steel:HRC:32~39(grade10.9) HRC:39~44(grade12.9) |
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Finish
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Zinc plated, Nickel plated, Bronze, Copper,Phosphate, Oxidation black, Passivation, Tin, Dacromet, Gold, Chrome, Silver,
Phosphorization,Zinc-nickel alloy plated etc. |
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Sample Available
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The sample is free of charge if we have the existing tooling,you only need to pay for the freight cost
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Delivery time
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Samples time 3-5 working days, Lead time 20-25 working days
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Pricing Term
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EXW Dongguan(FCA),FOB, CIF, CNF, DDU,etc.
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Packing
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Bulk in PE bag or Small boxes.then in carton .pallet
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Payment term
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TT (30% in advance as deposit, balance before delivery) , L/C, Western Union,PayPal etc
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Management system
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ISO9001:2015
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Certificate
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ISO,ROHS
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A1: Our main products are Electronic screws,Sems screws,Tapping screws,Chicago screws,Shoulder screws etc. Special Non-standard studs,Turning parts and High-end precision complex CNC Machining parts etc.
A2: Carbon Steel, Alloy Steel, Aluminum alloy,Stainless Steel, Brass, Copper ,Titanium alloy or according to your requirement.
A: We usually offer you a quotation within 12 hours, and the special offer is not more than 24 hours.Any urgent cases, please contact us directly by phone or send email to us.
A: If the weight of goods more than 80kg,Normally we use shipment to transprot the orders. It is about 20-30days . If the weight of goods less than 80kg,or there are urgent, we can send the goods via air express,It is 3~5 days.
Q4: What's your packing?What to do in case of damaged goods during transport?
A1: Our Normal packing is bulking in Cartons, less than 20 kgs/carton, 48 cartons / pallet. We also can pack products according to your requirement.
A2: To avoid any subsequent trouble regarding quality issue, we suggest you check the goods once you receive them. If there is any transport damaged or quality issue, don't forget take the detail pictures and contact us as soon as possible, we will properly handle it to make sure your loss to reduce to the smallest.
A: Yes, for big order, frequent customers, we give reasonable discounts.
A: Our production equipment is a new imported equipment. We have a group of skilled workers who have been working for more than 10 years. Their production experience is very rich and their skills are very skilled. The screws can be 30 million pcs/month. We have sufficient funds to ensure the normal operation of the factory.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.