Chinese Chinese
   
Korean Korean
   
Japaness Japanese
   
Choose Language:
main-logo
  • Products
    • HARDLOCK Nut
    • HARDLOCK Bearing Nut
    • HARDLOCK Set Screw
    • Identifying Counterfeit Products
    • Downloads
    • CAD Downloads
  • Technical Information
    • Why Do Bolts Come Loose?
    • Why do bolts fail from fatigue?
    • Bolt Locking Devices And Methods
      • Effective Loosening Prevention Strategies
    • What Makes HARDLOCK Stay Secure?
      • HARDLOCK Nut Wedging Mechanism
    • Locknut Testing Results
      • Types of Vibration Tests
      • Junker Test
      • NAS Test
      • Dynamic Axial Loading
      • Reusability
      • Double nutting comparison
    • Locknut Testing Equipment
    • Articles, Technical Papers
  • Applications
  • About Us
    • Company Profile
    • Corporate Vision
    • Quality Initiatives
    • Locations & Distributors
    • History
    • News
  • Contact us

Projects

  • About Us
  • News
  • Projects
  • 2008 June 1st

    Atomic Energy Specification Sheet for the HARDLOCK Nut

    We have written an atomic energy specification sheet for the HARDLOCK Nut. Contact us directly if you need any further details.

    Specification Sheet

    PDF file (japanese)

    Projects
  • 2007 July 21st

    Shift from Hexavalent Chromium to Trivalent Chromium

    HARDLOCK aims to become more eco-friendly. On July 21st, we began shifting from the use of the harmful substance hexavalent chromium to trivalent chromium when electrolytic zinc plating for surface finishing.
    Contact HardLock if you would like a product safety data sheet. They are available in English and Japanese.

    Projects
  • 2007 July 21st

    New packaging and boxes

    HARDLOCK has redesigned its case packaging and small boxes. Look for the new designs starting in September.

    hln

    sln

    hls

    hlb

    Projects
6 / 6« First«...23456
  • Products

    • HLN Hardlock Nut
    • HLB Hardlock Bearing Nut
    • HLS Hardlock Set Screw
    • Warning about Imitation Products
  • Technical Information

    • Why Do Fasteners Become Loose?
    • Why the Hardlock Nut Does Not Loosen
    • Testing Apparatus
    • Test Data
    • Articles, Technical Papers
  • Applications

  • About Us

    • Company Outline
    • Corporate Vision
    • Quality Initiatives
    • Locations
    • History
    • News
    • Contact us
    • Privacy Policy
    • Product Brochure Downloads
    • 2D & 3D CAD File Downloads

© 2025 HARDLOCK Industry Co., Ltd. All rights reserved.