Premium Indented Hex Head Bolts with Integrated Washer Design

ISO-Compliant 18-8 Stainless Steel Hex Bolts with Advanced Manufacturing Process

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How Can Indented Hex Head Bolts Reduce Assembly Time in High-Volume Automotive Production?

Our indented hex head bolts feature an integrated washer design that eliminates separate washer handling, reducing assembly steps by 30-40% in high-volume production lines. With ISO-compliant inspection across 11 critical measurement points and advanced 2.5D projector verification, every bolt meets automotive industry quality standards. The indented hex design provides superior torque application and prevents tool slippage during automated assembly. Contact us to receive sample specifications and discuss how our 45-year manufacturing expertise can optimize your fastener supply chain.

With 45 years of manufacturing expertise, we offer comprehensive material options including 302HQ, 304SS, 305SS, 316SS, 410SS, 420SS, and 430SS stainless steel grades to meet diverse application requirements. Our production capabilities span head diameters from M1.6 to M16 (#00 to 5/8") and lengths from 1/8" to 12" (3.175mm to 600mm), enabling customized solutions for specialized industrial applications. Every measurement point—from across-the-flat and corner dimensions to washer diameter, washer height, length, head height, major diameter, minor diameter, thread angle, pitch, and ring gage GO/NO GO testing—undergoes rigorous inspection during production and before shipping. Contact us today to discuss your specific indented hex head bolt requirements and experience the quality difference of Taiwan-manufactured precision fasteners.

Indented Hex Head Bolt - Indented Hex Head Bolt
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Indented Hex Head Bolt

BM006-120221-1

Process: Head formation before threading, and then acid washing
All the items are inspected during the process and before shipping, complying with ISO Working Instruction
Inspection Tools: Calipers, Protrusion-height gage, Micrometer, 2.5D and 2D projector
Measurement Points: Across the flat and corner, Washer diameter, Washer height, Length, Head height, Major diameter, Minor diameter, Thread angle, Pitch, Ring gage GO/NO GO

Features

  • Indented Hex Head

Specification

  • Item Material: 18-8SS
  • Item Size: 1/4-20*3/4”
  • Available Stainless Steel Material: 302HQ、 304SS 、305SS 、316SS 、410SS 、420SS 430SS

Available Product

  • Head Diameter M1.6~M16/#00~#5/8
  • Length 1/8”~12”/3.175mm~600mm