Black-Plated Hex-Flange Bolt – Code 8105.0.12151

  • Status: Out of stock
  • Vendor: Vinahardware
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flange bolts

Black-Plated Hex-Flange Bolt – Code 8105.0.12151

Key Facts Details
Thread Range M5 × 0.8 • M6 × 1.0 • M8 × 1.25 • M10 × 1.5 • M12 × 1.75
Standard Lengths 10 – 60 mm (custom to 120 mm in 5 mm steps)
Head / Drive 10.9 mm – 18 mm across-flats 6-point hex • Integrated 18° flange (serrated or plain)
Material / Grade Low-carbon boron steel, heat-treated to Class 8.8 (10.9 on request)
Surface Options Black oxide (standard) • Zn-white • Zn-yellow • Zn-Ni • Bright nickel
Corrosion Test ≥ 72 h salt-spray (black oxide) 
Head Marking “VH” plus grade dots / figure
Tensile Strength 830 MPa (Class 8.8)
MOQ 30 000 pcs per size
Lead Time 15 – 18 days after 30 % deposit
Packing 500 pcs/PE bag → 20 kg carton → 900 kg/pallet

Product Overview

Vinahardware’s 8105.0.12151 hex-flange bolt locks timber, sheet-metal or composite parts with one tool, no washers required. The built-in 18 ° flange spreads load, while optional radial serrations bite into lacquered steel or powder-coat finishes for anti-slip performance. A deep-black oxide layer delivers an industrial look and passes a 72-hour salt-spray test; alternative zinc or nickel platings are ready for coastal or food-grade projects.

Manufacturing Highlights

  1. Cold-heading & two-punch forging — concentricity ≤ 0.05 mm.

  2. Induction hardening + tempering — Class 8.8 micro-structure.

  3. Automatic optical sort — 0 % mixed lengths or missing threads.

  4. Torque-tension tested — K-factor 0.14 ± 0.02 (black oxide, M8).

Competitive Advantages

  • Washer-less design cuts assembly time by 20 %.

  • Black finish disappears under dark décor or automotive trims.

  • Custom logo & head marking in 7 days.

  • Multiple plating recipes from 72 h to 480 h SST without new tooling.

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