5/16"-18 X 1-1/2" Machine Screws | Indented Hex Head | 18/8 Stainless Steel (500/Pkg.)

Mutual ScrewSKU: 3124MW188KC

Price:
Sale price$671.09per 500( $1.34 each)
Pieces 500
Measurement type Inch
Thread size 5/16-18
Diameter 5/16
Length 1-1/2
Material 18/8 Stainless Steel
Grade 18/8
Finish Plain
Drive Unslotted
Head style Indented Hex
Threads per inch 18
Thread style Fully Threaded
Weight 21.0 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 dependable fastening in metal and plastic assemblies, these Machine Screws feature an unslotted indented hex drive and 18/8 stainless steel construction for superior corrosion resistance. Sized 5/16-18 x 1-1/2 in., they deliver strong, precise threading in a compact, secure screw.

  • Drive type: Indented hex (security hex) unslotted for tamper-resistant installation.
  • Material: 18/8 stainless steel (AISI 304) for excellent corrosion resistance.
  • Size: Diameter: 5/16 in; Thread: 18 per inch; Length: 1-1/2 in.
  • Finish: Passivated for enhanced surface protection.
  • Applications: Ideal for machinery, electronics enclosures, automotive assemblies, and outdoor installations where a secure hex drive is required.

Why choose 18/8 stainless steel machine screws? The 18/8 composition (roughly 304 stainless) provides a balanced combination of strength, corrosion resistance, and formability, making these screws suitable for environments with moisture, humidity, or exposure to the elements. The indented hex drive adds a level of tamper resistance while maintaining a compact profile for tight spaces.

Packaging and compatibility: These screws are designed for standard 5/16-18 threads, compatible with components using standard machine screw threads. Perfect for hardware kits, repair projects, and professional installations that demand reliable, long-lasting fasteners.

Can We Help?

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

Recently viewed