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Metric Flange Head Bolts Wholesale

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Metric Flange Head Bolts Manufacturers

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Introduction

Metric Flange Head Bolts (often called flanged hex bolts) feature an integrated, non-removable washer-like circular flange below the head. This design eliminates the need for a separate washer, saving assembly time and reducing inventory complexity. The flange distributes the clamping load over a wider area than a standard hex bolt, making them ideal for soft materials, thin sheets, or oversized holes. They are extensively used in automotive assembly, appliance manufacturing, and light industrial equipment.

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Specification

Head Style

Hex Head with Integrated Flange
Flange Type

Serrated (Locking) or Non-Serrated (Plain)
Standard

DIN 6921 / ISO 8100/8102
Material Options

Steel (Class 8.8, 10.9), Stainless Steel (A2)
Key Advantage

Load Distribution, Anti-Vibration

Applications

  • Automotive Powertrain: Used for engine, transmission, and differential mounting (often serrated for locking).

  • Sheet Metal Assemblies: Securing thin metal enclosures where load spreading is necessary.

  • Appliance Manufacturing: Used in high-volume, automated assembly of washing machines, refrigerators, etc.

  • Conveyor Systems: Used in the assembly of modular industrial conveyors.

Advantages

  • Load Distribution: Reduces stress concentration on the fastened material, ideal for soft or composite surfaces.

  • Assembly Efficiency: Simplifies assembly by eliminating the need to handle a separate washer, improving installation speed.

  • Locking Capability: Serrated flanges bite into the mating surface, providing a mechanical resistance to loosening.

  • Inventory Reduction: Reduces the number of components needed (bolt + nut only).

Payment & Shipping

We offer large-volume production runs and accept TT 30 Days for industrial clients. Flange bolts are packaged securely, often in high-density cartons, ready for delivery to automated factory feed systems and JIT inventory programs.

FAQ

  • Q: Should I use a serrated or non-serrated flange bolt?
  • A: Use a serrated flange bolt when you need an integrated locking feature to resist vibration (often used on steel or hard surfaces). Use a non-serrated flange bolt when securing softer materials (like plastic or aluminum) where the biting action of the serration could damage the surface, and the primary goal is load distribution.
  • Q: Can I use an external washer with a flange bolt?
  • A: Generally, no. Using an extra washer is redundant because the flange serves the purpose of a washer. It also may compromise the effectiveness of the serrated locking feature and is usually against the fastener's engineering intent.

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Steady-Ind

Steady-Ind - Pursue quality and cast high-quality goods.

STEADY manufactures over a thousands different types of blind rivet nut in steel,aluminium and stainless steel,thread size from M3-M16 in metric and UNC #6-32 to UNC 1/2-13 in inch. High advantage in stainless steel blind rivets both for open and sealed type, mutigrip,monobolt and other structural rivets. As China Metric Flange Head Bolts Manufacturers and Metric Flange Head Bolts Factory, we focus on "one stop shopping" and with advantage of large production capacity , consistent quality, competitive prices, punctual delivery and goods serverices before and after sales, STEADY has become one of the leading blind fasteners manufacuture & supplier in Asia.

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Recommended LINS: DIN 603 Mushroom Head Bolts Metric Fine Thread Hex Nuts High Tensile Structural Bolts 10.9 Tension Control Shear Bolts