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Wire Bolts Suppliers | OEM, Bulk Pricing & Fast Delivery

Oct . 18, 2025 11:55 Back to list

Wire Bolts Suppliers | OEM, Bulk Pricing & Fast Delivery


A Buyer’s Field Guide to wire bolts suppliers (with real specs that matter)

The fastener market is having a moment. Demand from energy, rail, and wind keeps climbing, while quality expectations quietly ratchet up. In Yongnian, Hebei—the de facto fastener capital—you feel that pulse on every shop floor. Today I’m zeroing in on double end stud bolts and the ecosystem of wire bolts suppliers behind them. In fact, I spent a week walking plants in Handan City, and the best operations blend old-school thread-rolling craft with tight process control.

Wire Bolts Suppliers | OEM, Bulk Pricing & Fast Delivery

Product snapshot: Double End Stud Bolts

Quick refresher: double end studs are threaded on both ends with an unthreaded shank in between—ideal for flanged joints where frequent disassembly happens. Origin here: Southwest of Road Taibai, Yongnian District, Handan City, Hebei Province, China. Honestly, proximity to rod mills and plating lines helps keep costs sane and lead times short.

Spec Typical Options (≈ real-world, may vary)
Materials Carbon steel (C35–C45), Alloy steel (42CrMo/4140), Stainless (304/316), ASTM A193 B7
Strength Grades ISO 898-1 8.8 / 10.9; A193 B7; custom on request
Threads Metric ISO 965-1 (M6–M48), UNC/UNF (1/4"–2")
Finish Black oxide, zinc (blue/yellow), HDG, phosphate, DAC/GEOMET
Proof/Tensile 8.8: Rp0.2 ≈ 640 MPa, Rm ≈ 800 MPa; 10.9: Rp0.2 ≈ 940 MPa, Rm ≈ 1040 MPa; B7: Rm ≥ 860 MPa
Service Life ≈10–25 years with HDG/DAC in C3–C5 environments; salt-spray 480–1000 h typical

How good suppliers actually build them

  • Materials: certified wire rod, mill heat traceability from ladle to lot.
  • Methods: cold-drawn rod → cut-to-length → thread rolling (not cut, to keep grain flow) → heat treat (Q&T for 8.8/10.9/B7) → surface finish.
  • Testing: hardness (HV/HRC, ISO 6507/6508), tensile (ISO 6892-1), proof load, thread gauges (GO/NO-GO, ISO 1502), salt spray (ASTM B117).
  • Documentation: MTCs, PPAP on request, RoHS/REACH compliance, ISO 9001 system audits.
Wire Bolts Suppliers | OEM, Bulk Pricing & Fast Delivery

Vendor landscape: who does what

There’s a lot of noise out there. Here’s a quick (and admittedly compact) comparison you can sanity-check during sourcing.

Vendor Grades Certifications MOQ Lead Time Customization
YZ Fastener (Handan) 8.8 / 10.9 / B7 ISO 9001; material MTC ≈ 500 pcs 10–20 days Non-standard lengths, coatings
Global Trader 8.8 / 10.9 ISO 9001 (broker) ≈ 1,000 pcs 3–6 weeks Limited
Local Job Shop 8.8 (some 10.9) Shop-level QA Small batches Fast for repeats High—one-offs possible
Wire Bolts Suppliers | OEM, Bulk Pricing & Fast Delivery

Applications, data, and a couple of real cases

  • Petrochemical flanges: A193 B7 with A194 2H nuts; typical torque-tension correlation verified with calibrated washers.
  • Wind turbine bases: HDG M30–M42 studs; salt-spray >720 h; field reports suggest ≈15–20 year service with periodic inspection.
  • Rail/bridge bearings: 10.9 studs, phosphate + oil for friction control; ultrasonic testing on critical lots.

Case note: one EPC told me their flange leaks dropped by ~28% after switching to rolled threads and controlled hardness (31–34 HRC for B7). Another customer—admittedly picky—said the thread fit “finally stopped fighting the nuts.” Small wins, big uptime.

Wire Bolts Suppliers | OEM, Bulk Pricing & Fast Delivery

Customization checklist (so you get what you asked for)

  • Drawing with thread lengths (A/B), unthreaded shank, chamfers.
  • Grade + heat treat window (e.g., 10.9, temper at 400–450°C).
  • Coating and corrosion class target (C3/C4/C5), test hours.
  • Inspection plan: tensile, hardness, MPI/UT if critical, lot traceability.

Bottom line: pick wire bolts suppliers who can show heat-to-lot traceability, actual tensile curves, and coating test data—not just glossy photos. If you’re sourcing from Hebei, YZ Fastener’s double end stud bolts are a solid benchmark, to be honest.

Authoritative standards and references

  1. ISO 898-1: Mechanical properties of carbon and alloy steel fasteners.
  2. ASTM A193/A193M: Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service.
  3. ASTM B117: Standard Practice for Operating Salt Spray (Fog) Apparatus.
  4. ISO 965-1 / ISO 1502: Metric screw threads; gauging requirements.
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