1/4"-20 X 3/8" Machine Screws | Flat Head | Phillips Drive | 18/8 Stainless Steel Black Oxide (1000/Pkg.)

Mutual ScrewSKU: 1406MPU188BKC

Price:
Sale price$187.66per 1000( $0.19 each)
Pieces 1000
Measurement type Inch
Thread size 1/4-20
Diameter 1/4
Length 3/8
Material 18/8 Stainless Steel
Grade 18/8
Finish Black Oxide
Drive Phillips
Head style Flat
Threads per inch 20
Thread style Fully Threaded
Weight 7.0 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

Upgrade your fastening solutions with our Phillips flat-head machine screws crafted from 18/8 stainless steel and finished in black oxide. Sized at 1/4-20 UNC and 3/8 inch in length, these screws deliver dependable strength, corrosion resistance, and a sleek, low-profile appearance for a wide range of applications.

Key features

  • Drive: Phillips drive for reliable seating and easy tightening.
  • Head style: Flat-head (countersunk) for a flush, professional finish.
  • Material: 18/8 stainless steel (304) to resist rust and wear.
  • Finish: Black oxide provides a subtle, non-reflective surface and additional protection.
  • Thread size: 1/4-20 UNC for common, widely available compatibility.
  • Length: 3/8 inch to suit a variety of panel and component thicknesses.

Technical specifications

  • Material: 18/8 stainless steel (304)
  • Finish: Black oxide
  • Head type: Flat-head (countersunk)
  • Drive type: Phillips
  • Thread: 1/4-20 UNC
  • Length: 3/8 inch

Designed for electronics enclosures, cabinetry, machinery assemblies, and other precision projects, these screws combine corrosion resistance with a clean, professional look. Choose this fastener when you need a reliable, flush-mount solution that stands up to daily use.

Can We Help?

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

Recently viewed