5/16-18 X 1" Flat Head Cap Screws | Tamper Resistant | Pin-In Socket Drive | 18/8 Stainless Steel (100 / Pkg.)

Mutual ScrewSKU: 3116FPSM

Price:
Sale price$232.51per 100( $2.33 each)
Pieces 100
Measurement type Inch
Thread size 5/16-18
Length 1
Material 18/8 Stainless Steel
Grade 18/8
Finish Plain
Drive Pin-In Socket
Head style Flat
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

Cap Screws Flat Pin In Socket Stainless 5/16-18 X 1 is a premium stainless steel cap screw featuring a flat pin-in socket for a clean, flush appearance and secure seating in precision assemblies.

With a 5/16-18 UNC thread size and a 1 inch length, these cap screws are ideal for automotive, machinery, and outdoor equipment where strength, corrosion resistance, and reliable performance are essential.

Key specifications

  • Material: Stainless steel for corrosion resistance and durability
  • Thread size: 5/16-18 UNC
  • Length: 1 inch
  • Drive: Cap screw with flat pin-in socket
  • Finish: Natural stainless steel

Why choose these cap screws?

Designed to withstand challenging environments, these screws provide robust fastening with a flush, clean profile thanks to the flat pin-in socket design. They pair with compatible tapped holes or nuts to deliver reliable clamping force across a wide range of applications.

Applications

  • Machinery assemblies
  • Automotive components
  • Industrial equipment
  • Outdoor or marine environments where corrosion resistance is important

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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