High Tensile Indented Hex Socket Bolt with Integrated Washer

DIN933 Compliant 70kgf/mm2 Tensile Strength Stainless Steel Hex Bolt with Internal Socket and DIN6902A Washer

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Need High-Strength Fasteners That Won't Fail Under Extreme Automotive Stress?

Our indented hex bolts deliver 70kgf/mm2 tensile strength with DIN933 head formation and integrated DIN6902A washers, specifically engineered for critical automotive assembly applications. Every bolt undergoes ISO-compliant multi-point inspection including thread angle, pitch verification, and ring gauge GO/NO GO testing to ensure zero-failure performance in high-vibration environments. Contact us for samples and technical specifications tailored to your automotive fastening requirements.

Every indented hex socket head bolt is meticulously inspected during manufacturing and before shipping, complying with ISO working instructions to guarantee consistent quality and performance. Our comprehensive inspection protocol utilizes advanced measurement tools including calipers, protrusion-height gauges, micrometers, and 2.5D/2D projectors to verify critical dimensions: head diameter and height, hex across flat and corner measurements, hex recess depth, hex plug gauge compliance, total length, thread length, major and minor diameters, thread angle, pitch, and ring gauge GO/NO GO testing. This multi-point inspection methodology ensures each fastener meets exacting specifications for structural integrity, dimensional accuracy, and long-term reliability in high-stress applications across automotive, machinery, construction, and heavy equipment industries.

Indented Hex Bolt - Indented Hex Socket Head Plus Washer w/High Strength Bolt
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Indented Hex Bolt

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: Head diameter, Head height, Across the flat and corner of the hex, Hex Rec depth, Hex plug gauge, Total length, Thread length, Major diameter, Minor diameter, Thread angle, Pitch, Ring gage GO /NO GO

Features

  • Head Formation Complying w/ DIN933
  • Internal Hex Socket
  • DIN6902A Washer under Head
  • 70kgf/mm2 Tensile Strength

Specification

  • Item Specification: M5*66
  • Item Material: 18-8SS