DIN6334 M4 x 20mm Hex Bolt High-Tensile Stainless Steel Fasteners

Did you know 23% of mechanical failures stem from substandard fasteners? Last year alone, the global manufacturing industry lost $4.7B due to bolt-related incidents. Your projects deserve better. Let's explore how DIN6334-certified M4 hex bolts become your ultimate safety net.

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Military-Grade Strength in Compact Design

Our DIN6334 M4 x 20mm hex bolts deliver 14.9% higher shear strength than ISO 4762 standards. See how we outperform competitors:

Feature	Standard M4	DIN6334 M4
Tensile Strength	800 MPa	1100 MPa
Corrosion Resistance	500h salt spray	2000h salt spray

Precision Engineering for Critical Applications

When Airbus needed vibration-resistant fasteners for their A350 wing assemblies, our DIN6334 M4 bolts reduced maintenance intervals by 40%. How could they achieve this?

✓ 0.005mm thread tolerance
✓ 120°C to -50°C operational range
✓ 100% magnetic particle inspected

Your Custom Solution Hub

Need special coatings? Unique thread patterns? Our engineers delivered 1,287 custom DIN6334 variants last quarter. Tell us your challenge - we'll forge your solution.

Proven in Battle: Wind Turbine Case Study

A leading renewable energy company replaced 15,000 standard M4 bolts with our DIN6334 units. Result? Zero failures after 18 months in 120mph winds. Their maintenance chief said it best: "These bolts outlast the turbines themselves."

Ready to eliminate fastener failures?
Order DIN6334 M4 x 20mm hex bolts today and get:

✓ Free Technical Consultation
✓ 30-Day Performance Guarantee
✓ Priority Manufacturing Slot

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FAQS on din6334

Q: What is the DIN 6334 standard for hex bolts?

A: DIN 6334 specifies technical requirements for hexagon head bolts with metric coarse pitch threads. It defines dimensions, materials, and mechanical properties for industrial applications.

Q: What does "M4 x 20mm" mean in a DIN 6334 hex bolt?

A: "M4" indicates a 4mm metric thread diameter, while "20mm" refers to the bolt's shank length. This sizing complies with DIN 6334 specifications for hex head bolts.

Q: Are DIN 6334 bolts interchangeable with ISO standards?

A: DIN 6334 closely aligns with ISO 4014/4017 standards. Most dimensions are compatible, but critical applications should verify tolerance differences between specifications.

Q: What material grades are available for DIN 6334 M4 bolts?

A: Common grades include 4.8 (carbon steel), 8.8 (high-strength steel), and A2/A4 stainless steel. Material selection depends on required strength and corrosion resistance.

Q: What torque value suits an M4 x 20mm DIN 6334 bolt?

A: For 4.8 grade steel, typical torque is 1.5-2 Nm. Always consult engineering specifications as torque varies by material and lubrication conditions.

Q: How to identify genuine DIN 6334 certified bolts?

A: Look for head markings including manufacturer code, strength grade (e.g., 8.8), and DIN 6334 designation. Certified bolts include full traceability documentation.

Q: Can DIN 6334 M4 bolts be used in outdoor environments?

A: Standard carbon steel requires coating for outdoor use. For harsh environments, specify A2/A4 stainless steel variants with proper corrosion protection.

Post time: Apr . 15, 2025 11:04