5/16"-18 X 2-1/4" Machine Screws | Flat Head | Phillips Drive | 18/8 Stainless Steel (250/Pkg.)

Mutual ScrewSKU: MS51959-103KC

Price:
Sale price$173.83 Regular price$201.64per 250( $0.70 each)
Pieces 250
Measurement type Inch
Thread size 5/16-18
Diameter 5/16
Length 2-1/4
Material 18/8 Stainless Steel
Grade 18/8
Finish Plain
Drive Phillips
Head style Flat
Threads per inch 18
Thread style Fully Threaded
Weight 11.0 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

Specs

  • Material: 18/8 stainless steel (304) for corrosion resistance and long-term strength.
  • Drive: Phillips (PH) drive for standard screwdriver installation.
  • Head style: Flat head for flush, countersunk finish.
  • Thread: 5/16-18 UNC coarse-thread.
  • Length: 2-1/4 inches overall length.
  • Pack size: 250 pieces per package.
  • Applications: Equipment, cabinetry, enclosures, and general metal fastening where rust resistance matters.

Features

  • Mil-Spec design offers reliable performance in demanding environments with corrosion resistance from 18/8 stainless steel.
  • Flush flat head provides a clean, professional finish on routed or countersunk surfaces.
  • Phillips drive enables straightforward installation with standard screwdrivers or bit drivers.
  • Coarse-threaded 5/16-18 UNC enhances thread engagement in common tapped holes and thicker materials.
  • Bulk packaging (250 per package) supports assembly projects with multiple fasteners or replacement needs.

Physical

  • Flat head, countersunk profile with Phillips drive.
  • Material: 18/8 stainless steel (304) for corrosion resistance.
  • Thread: 5/16-18 UNC; Length: 2-1/4 inches.
  • Pack quantity: 250 per package.

Industry Used In

  • Metalworking shops and fabrication environments requiring rust-resistant fasteners.
  • Cabinetry and casegoods installations where a flush, neat appearance is desired.
  • Electrical enclosures and control panels needing durable, corrosion-resistant mounting screws.
  • Industrial equipment assemblies where reliable thread engagement and easy installation are important.
  • General purpose hardware applications in workshops and production settings.

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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