1/4"-20 X 3/8" Machine Screws | Indented Hex Washer Head | Steel Zinc Plated (4000/Pkg.)
Roll over image to zoom in Click on image to zoom
1/4"-20 X 3/8" Machine Screws | Indented Hex Washer Head | Steel Zinc Plated (4000/Pkg.)

Image may not reflect complete product dimensions and specifications. Please call to confirm any questions.

1/4"-20 X 3/8" Machine Screws | Indented Hex Washer Head | Steel Zinc Plated (4000/Pkg.)

Mutual ScrewSKU: 1406MWKC
Price:
$341.74per 4000( $0.09 each)
Pieces 4000
Measurement type Inch
Thread size 1/4-20
Diameter 1/4
Length 3/8
Material Steel
Grade Steel
Finish Zinc Plated
Drive Unslotted
Head style Indented Hex Washer
Threads per inch 20
Thread style Fully Threaded
Weight 40.0 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

Engineered for durable, reliable fastening, these Machine Screws Unslotted Indented Hex Washer Zinc Plated 1/4-20 x 3/8 deliver strong performance in metal-to-metal assemblies. The zinc plating offers corrosion resistance, making them a go-to choice for machinery, electrical enclosures, appliances, and automotive applications.

Key features

  • Size: 1/4-20 UNC with length 3/8 in
  • Head style: Hex washer head for a flush, secure fit
  • Drive type: Indented hex (internal hex) drive — requires an Allen key
  • Material & finish: Zinc-plated steel for corrosion resistance
  • Thread: Unified National Coarse (UNC) 1/4-20
  • Slotted: Unslotted (no screwdriver slot)
  • Applications: Ideal for machine assemblies, equipment, electronics enclosures, and other metal-to-metal fastenings

Whether you're assembling a cabinet, securing panels, or repairing automotive components, these screws provide a reliable hold with a clean finish. Pair with the appropriate nuts or tapped holes for secure, vibration-resistant performance.

Can We Help?

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

Recently viewed