3/8-16 X 1-1/4" Flat Head Cap Screws | 316 Stainless Steel (100 / Pkg.)

Mutual ScrewSKU: 3720CSF316YW

Price:
Sale price$318.98per 100( $3.19 each)
Pieces 100
Measurement type Inch
Thread size 3/8-16
Length 1-1/4
Material 316 Stainless Steel
Grade 316
Finish Plain
Drive Hex Socket
Head style Flat
Weight 5.0 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 Socket 316 Stainless 3/8-16 x 1 1/4 is a high-grade fastener designed for strength, reliability, and corrosion resistance in demanding environments.

These flat socket cap screws are precision-machined from 316 stainless steel, providing excellent resistance to rust, corrosion, and chemical exposure. The 3/8-16 UNC thread and 1 1/4 inch length make them a versatile choice for automotive, industrial, and marine applications where a low-profile, secure drive is required.

Key features

  • Material: 316 stainless steel for maximum corrosion resistance
  • Head style: Flat socket cap screw with a low-profile, flush finish
  • Drive type: Hex socket (Allen) drive
  • Thread size: 3/8-16 UNC
  • Length: 1 1/4 inch
  • Finish: Passivated for enhanced corrosion resistance in harsh environments
  • Standards: Meets standard industrial fastener tolerances

Typical applications include mounting equipment, machinery enclosures, outdoor installations, and marine hardware—any project that benefits from a strong, durable, and corrosion-resistant fastener with a clean, low-profile head.

Shopping tips: pair these screws with compatible hex wrenches and appropriate washers if needed. For stainless steel fasteners, observe proper torque values to prevent galling and ensure long-term reliability.

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

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