Custom Hex Head Screws in 316 Stainless Steel A4-70 Grade

High Tensile Custom Hex Head Fasteners with Multi-Blow Header Technology and ISO Compliant Quality Control

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Need High-Strength Hex Head Fasteners That Won't Corrode in Automotive Assemblies?

Our custom 316 stainless steel hex head screws in A4-70 grade deliver superior tensile strength and corrosion resistance for critical automotive components. With multi-blow header precision and ISO-compliant inspection of every dimension—from hex corner measurements to thread pitch verification—we ensure consistent performance in engine assemblies, chassis connections, and exterior applications. Contact us to customize specifications for your automotive fastening requirements.

Every custom hex head fastener is inspected during production and before shipping, ensuring consistent quality through ring gage GO/NO GO testing and comprehensive dimensional verification. Our M4*18 specification represents just one example of our extensive customization capabilities, where we tailor hex head screws to meet your exact requirements. The combination of 316 stainless steel material properties and A4-70 grade strength classification makes these fasteners ideal for applications requiring superior corrosion resistance in marine, chemical processing, and outdoor environments. Contact us today to discuss your custom hex head screw requirements and experience the reliability of ISO-compliant manufacturing backed by over four decades of specialized fastener production expertise.

Custom Hex Head Screw - Custom Hex Head Screw
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Custom Hex Head Screw

HB003-150232-1

Process: Using multi blow header for 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, Across the flat and corner of the hex, Head height, Total length, Major diameter, Minor diameter, Thread angle, Pitch, Ring gage GO/NO GO

Features

  • A4-70
  • Custom Hex Head

Specification

  • Item Specification: M4*18
  • Item Material: 316 SS