[750 BULK] Machine Screws Phil Flat Steel Black Zinc 5/16-18 X 2 1/2

Mutual ScrewSKU: 3140MPFBZKC

Price:
Sale price$400.30per 750( $0.53 each)
Pieces 750
Measurement type Inch
Thread size 5/16-18
Diameter 5/16
Length 2-1/2
Material Steel
Grade Steel
Finish Black Zinc
Drive Phillips
Head style Flat
Threads per inch 18
Thread style Fully Threaded
Weight 35.0 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

Phillips Flat-Head Machine Screws, Steel with Black Zinc Finish — 5/16-18 x 2-1/2 are precision-engineered fasteners designed for secure, low-profile mounting of metal panels, brackets, and enclosures. Constructed from durable steel and finished in black zinc, these screws deliver reliable performance and a clean appearance in exposed or concealed installations.

Key Specifications

  • Size: 5/16-18 UNC
  • Length: 2-1/2 inches
  • Drive: Phillips
  • Head Type: Flat
  • Material: Steel
  • Finish: Black zinc

Applications

Ideal for securing metal panels, enclosures, electronic housings, and brackets where a flush, low-profile head is desired. The Phillips drive ensures easy installation with standard screwdrivers, even in tight or confined spaces, while the black zinc finish provides corrosion resistance and a sleek, professional look.

Why Choose These Screws

Durable steel construction paired with a corrosion-resistant black zinc finish makes these screws suitable for both indoor and light outdoor use. The flat head sits flush with surfaces for a clean appearance, and the 5/16-18 threading offers a strong hold on metal components common in equipment, furniture assemblies, and DIY projects.

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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