Hex Nut

Hex Nut — Standard Six-Sided Nut | DIN 934 / ISO 4032 | Carbon & Stainless Steel

Hex nuts are the most widely used fastener nut type in the world, featuring a six-sided hexagonal design that provides excellent wrench grip and torque transfer. Manufactured to DIN 934, ISO 4032, and ANSI B18.2.2 standards, our hex nuts are available in sizes ranging from M3 to M64 in carbon steel, 304/316 stainless steel, and alloy steel. With multiple premium surface treatment options, our hex nuts deliver reliable performance across construction, machinery, automotive, and infrastructure applications.

Material & Specifications

Size Range	M3 to M64 / 1/8″ to 2-1/2″
Standard	DIN 934, ISO 4032, ANSI B18.2.2, GB/T 6170
Material	Carbon Steel (Grade 4, 5, 6, 8, 10, 12), 304 Stainless Steel (A2-70), 316 Stainless Steel (A4-80), Alloy Steel
Surface / Coating	Hot-Dip Galvanized, Electroplated Zinc (Blue/White, Yellow/Color), Dacromet, Multi-Element Alloy Co-Permeation, Plain/Black Oxide
Thread Type	Coarse (UNC), Fine (UNF), Metric Coarse (M), Metric Fine
Class	4, 5, 6, 8, 10, 12 (ISO 898-2)

Surface Treatment & Zinc Coating Quality

At BoltNutsPlus, we understand that surface treatment is critical to fastener longevity. We offer five premium coating options, each tested to international standards:

• Hot-Dip Galvanizing (HDG) — Thick zinc layer (50-120μm) providing superior long-term corrosion protection for outdoor, marine, and industrial environments. Compliant with ISO 1461 / ASTM A153 standards. Salt spray resistance: 500-1,000+ hours.
• Electroplated Zinc Blue-White (Zn Blue/White) — Bright, clean silver-blue appearance with 5-15μm zinc layer. Cr3+ passivation, RoHS compliant. Ideal for indoor applications requiring aesthetic appeal and moderate corrosion resistance.
• Color Zinc / Yellow Zinc (Iridescent Passivation) — Multi-colored passivation film offering enhanced corrosion resistance (100-200 hours salt spray) with a distinctive golden-iridescent finish preferred in automotive and machinery sectors.
• Dacromet Coating — Advanced water-based zinc-chromium coating with NO hydrogen embrittlement risk. Provides 1,000+ hours salt spray resistance. Ideal for high-strength grade 10.9/12.9 fasteners in extreme environments. Environmentally friendly, RoHS compliant.
• Multi-Element Alloy Co-Permeation — Zinc-aluminum-rare earth alloy layer offering 2-3x the corrosion resistance of traditional galvanizing. Self-healing properties at scratch points. Ideal for critical infrastructure, power transmission, and coastal projects.

Key Features

• Universal six-sided design compatible with all standard hex bolts and threaded rods
• Full thread engagement ensures maximum clamping force and load distribution
• Available in both metric and imperial thread profiles
• Chamfered top and bottom edges for easy wrench engagement
• Precise thread tolerance: 6H (metric) / 2B (imperial) for smooth assembly

Applications

• General construction and structural steel connections
• Machinery assembly and equipment manufacturing
• Automotive and transportation fastening
• Electrical and electronic equipment enclosures
• Furniture and architectural metalwork

Why Choose BoltNutsPlus?

• ISO 9001:2015 Certified Manufacturing — consistent quality you can trust
• 15+ Years of Export Experience — serving 40+ countries worldwide
• Full Traceability — material certificates (EN 10204 3.1) and test reports included
• Custom Packaging & OEM/ODM — your brand, your specifications
• Third-Party SGS / Bureau Veritas Inspection Available
• 24-Hour Quote Response — same-day reply for urgent requirements