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High-quality bolts and nuts for industrial mechanical parts and fasteners. Precision-engineered for.
30 Jun
Canada, Case Studies, Featured, Product Guides

Heavy Hex Bolt and Nut: ASTM A325 vs A490 vs F3125—What’s the Difference?

  • June 22, 2026
  • By author-avatar Jovi

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Heavy hex bolt and nut for structural steel connections on workshop table.
26 Jun
Case Studies, Featured, Product Guides

How to Match Heavy Hex Bolt and Nut Correctly for Structural Steel Connections

  • June 15, 2026
  • By author-avatar Jovi

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Two heavy hex nuts, one silver and one rusted, on a dark surface for structural bolting.
23 Jun
Canada, Featured, Product Guides

Heavy Hex Nut Grades Explained: ASTM A563, DH, and DH3 for Structural Bolting

  • June 15, 2026
  • By author-avatar Jovi

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Industrial bolts for machinery assembly and mechanical parts.
19 Jun
Canada, Case Studies, Featured, Product Guides

Heavy Hex Bolt vs Standard Hex Bolt: Which One Should Structural Buyers Choose?

  • June 15, 2026
  • By author-avatar Jovi

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High-quality steel bolt with hex head and threading, ideal for heavy-duty applications.
16 May
Product Guides

How to Match High Strength Heavy Hex Bolts with the Right Heavy Hex Nuts (Grade 2H / DH)

  • May 16, 2026
  • By author-avatar Jovi

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Bolt with precise dimensions, including head width, profile thickness, and shank diameter.
08 May
Product Guides

Heavy Hex Bolts vs. Standard Hex Bolts: When to Choose High Strength Options?

  • May 8, 2026
  • By author-avatar Jovi

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Comparison of ASTM A325 and A490 heavy hex bolts for structural use.
21 Apr
Product Guides

ASTM A325 vs A490 Heavy Hex Bolts: Key Differences Guide

  • May 8, 2026
  • By author-avatar Jovi

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DIN931 Hex Bolt
15 Apr
Canada, Featured, Product Guides, Technical Specs

Hex Bolts Guide: Types, Grades & Applications

  • May 8, 2026
  • By author-avatar Jovi

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High Strength Hex Bolt
10 Apr
Product Guides

DIN 931 vs DIN 933: Partial vs Full Thread Hex Bolts

  • May 8, 2026
  • By author-avatar Jovi

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  • Email: cheryl@qsfast.com
  • Company: Jiangyin Qi Sheng International Trading Co.,Ltd.
  • Address: No.302, Fanqian Road, He tang, Changjing Town, Jiangyin, Jiangsu, China
Copyright © 2025 QISHENG All Rights Reserved
  • Home
  • Products
    • Bolt
      • Hex Bolt
      • Hexagon Socket Screws
      • Carriage Bolt
      • Flange Bolt
      • U Bolt
      • T Bolt
    • Screws
      • Self Tapping Screw
      • Self Drilling Screw
      • Machine screw
      • Wood screw
      • Chipboard screw
      • Set Screw
    • Nut
      • Hex Nut
      • Flange Nut
      • Cap Nut
      • Lock Nut
      • Coupling Nut
      • Square Nut
      • Wing Nut
      • Tee Nut
      • Weld Nut
    • Washer
      • Flat washer
      • Lock washer
      • Bowl Type Washer
    • Thread Rod
      • Full Thread rod
      • Stud Bolts
    • Anchor
      • Drop In Anchor
      • Nylon Anchor
      • Sleeve Anchor
      • Wedge Anchor
    • Rivet
      • Blind Rivet
      • Rivet Nut
      • Tubular Rivet Round Rivet
    • Stamping Parts
    • Solar Photovoltaic Accessories
      • Solar Aluminum Profile Nut
      • Solar Aluminum Clamp
      • Solar Bracket
      • Solar Hanger Bolt
      • Solar Roof Hook
    • Customized Products
  • Industries
    • Construction
    • Manufacturing
    • Oil & Gas
    • Solar PV Industry
    • Automotive
    • Marine
  • Markets
    • Canada
    • U.S.A
  • Resources
    • Blog
    • FAQ
  • About us
  • Contact