#4-40 X 5/16" Tamper Resistant Machine Screws | Round Head | One Way Drive | 18/8 Stainless Steel (100/Pkg.)
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#4-40 X 5/16" Tamper Resistant Machine Screws | Round Head | One Way Drive | 18/8 Stainless Steel (100/Pkg.)

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#4-40 X 5/16" Tamper Resistant Machine Screws | Round Head | One Way Drive | 18/8 Stainless Steel (100/Pkg.)

Mutual ScrewSKU: 0405M1WR188
Price:
$15.28per 100( $0.15 each)
Pieces 100
Measurement type Inch
Thread size #4-40
Length 5/16
Material 18/8 Stainless Steel
Grade 18/8
Finish Plain
Drive One Way
Head style Round
Threads per inch 40
Weight 1.0 lb

WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to https://www.P65Warnings.ca.gov.

Description

Industrial-grade machine screws for precision fastening in metal enclosures, electronics chassis, and control panels. The round head with a one way drive ensures secure seating and controlled installation in shallow tapped holes across industrial assemblies.

Specs

  • Thread type: #4-40
  • Length: 5/16 inch
  • Drive type: One Way
  • Material grade: 18/8 stainless steel

Features

  • Corrosion resistance: 18/8 stainless steel provides durable corrosion resistance in harsh environments typical of electronics enclosures, control panels, and machinery.
  • Load distribution: Round head yields broad bearing surface for even load distribution and a clean finished appearance on metal panels.
  • One Way drive: One Way configuration ensures secure seating during installation and reduces risk of back-out in vibration or thermal cycling.
  • Thread compatibility: #4-40 threading matches standard tapped holes in common enclosure and chassis hardware.
  • Applications: Electronics enclosures, chassis, control panels, machinery where flush, reliable fastening is required.
  • Usage tip: Pair with compatible tapped holes and hardware for optimal grip and longevity.

Can We Help?

If you’re not sure that this product is right for you, give us a call!
800-222-0324

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