5/16"-18 X 1-3/4" Machine Screws | Flat Head | Slotted Drive | 18/8 Stainless Steel (500/Pkg.)

Mutual ScrewSKU: 3128MSF188KC

Price:
Sale price$386.90per 500( $0.77 each)
Pieces 500
Measurement type Inch
Thread size 5/16-18
Diameter 5/16
Length 1-3/4
Material 18/8 Stainless Steel
Grade 18/8
Finish Plain
Drive Slotted
Head style Flat
Threads per inch 18
Thread style Fully Threaded
Weight 17.0 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 strength and corrosion resistance, our Machine Screws Slotted Flat 18/8 Stainless in size 5/16-18 x 1-3/4 inches delivers dependable fastening for a wide range of hardware projects. Crafted from 18/8 stainless steel, these screws resist rust and staining in moisture-prone environments, making them ideal for machinery, panels, and equipment.

With a slotted drive and a flat (countersunk) head, they sit flush after installation, providing a neat, professional finish while delivering secure clamping power. The 5/16" diameter and 18 threads per inch (UNC) ensure strong gripping in tapped holes or with compatible nuts.

Key specifications

  • Material: 18/8 stainless steel (304)
  • Finish: Polished stainless
  • Head style: Flat, countersunk
  • Drive type: Slotted
  • Diameter: 5/16 in
  • Thread pitch: 18 TPI (UNC)
  • Length: 1-3/4 in
  • Type: Machine screw

Recommended uses include appliances, electrical enclosures, control panels, and general machinery where a flush, secure fastening is required and corrosion resistance is essential. For best results, pair with matching nuts or tapped holes and avoid over-tightening to protect threads.

Can We Help?

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

Recently viewed