1/4"-20 X 1/2" Tamper Resistant Machine Screws | Flat Head | Spanner Drive | 18/8 Stainless Steel (100/Pkg.)

Mutual ScrewSKU: 1408SMF

Price:
Sale price$64.17per 100( $0.64 each)
Pieces 100
Measurement type Inch
Thread size 1/4-20
Length 1/2
Material 18/8 Stainless Steel
Grade 18/8
Finish Plain
Drive Spanner
Head style Flat
Threads per inch 20
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 fasteners engineered for precision assemblies in machinery, control panels, and equipment housings. Flat head machine screws provide a flush surface and reliable torque transfer in metal and wood substrates.

Specs

  • Major diameter: 1/4 inch
  • Length: 1/2 inch (12.7 millimeters)
  • Head style: Flat, countersunk
  • Drive type: Spanner
  • Material grade: 304 stainless steel
  • Thread type: 1/4-20 UNC
  • Package quantity: 100 per package

Features

  • Corrosion resistance: 304 stainless steel provides robust compatibility with humid, damp, and industrial environments, extending life in enclosure and cabinet applications.
  • Flush mounting: Flat head with countersunk profile enables a low-profile surface, reducing snag risk and improving surface finish in equipment housings and assemblies.
  • Spanner drive: Secure tool engagement supports repeatable torque control in manual and automated assembly workflows, minimizing cam-out and tool wear.
  • Thread standard: 1/4-20 UNC is a widely adopted machine screw thread, ensuring compatibility with common black oxide or plated fasteners and hardware systems.
  • Use-case fit: Ideal for electronics enclosures, instrument panels, metal cabinets, machinery frameworks, and general fastener needs requiring a flush finish and reliable hold.

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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