5/16"-18 X 1-1/2" Tamper Resistant Machine Screws | Flat Head | Spanner Drive | 18/8 Stainless Steel (100/Pkg.)

Mutual ScrewSKU: 3124SMF

Price:
Sale price$122.23per 100( $1.22 each)
Pieces 100
Measurement type Inch
Thread size 5/16-18
Length 1-1/2
Material 18/8 Stainless Steel
Grade 18/8
Finish Plain
Drive Spanner
Head style Flat
Threads per inch 18
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 fastening solution designed for high reliability metal-to-metal connections. These flat head machine screws deliver flush installations and torque-controlled performance in demanding environments.

Specs

  • Dimensions: Length 38.10 millimeters; Major diameter 7.94 millimeters
  • Drive type: Spanner
  • Material grade: 18/8 Stainless Steel
  • Thread type: 5/16-18 UNC

Features

  • Material properties: 18/8 Stainless Steel provides corrosion resistance and strength for humid or wash-down environments.
  • Head style: Flat head, countersunk design enables flush installation and reduced clearance with mating surface.
  • Drive benefits: Spanner drive allows controlled torque and reduced cam-out, improving repeatability in automated or manual assembly.
  • Applications: Electrical enclosures, panel mounting, equipment enclosures, machinery assemblies, and other metal-to-metal fastening tasks requiring a low-profile finish.
  • Thread compatibility: Standard 5/16-18 Unified National Coarse thread pairs with common tapped holes and nuts, enabling broad interoperability.
  • Installation guidance: Use with matching tapped holes or nuts; ensure proper alignment to prevent cross-threading; maintain flush finish by torquing to spec.

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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