5/16"-18 X 3/8" Machine Screws | Round Head | Slotted Drive | Steel Zinc Plated (2000/Pkg.)

Mutual ScrewSKU: 3106MSRKC

Price:
Sale price$429.20per 2000( $0.21 each)
Pieces 2000
Measurement type Inch
Thread size 5/16-18
Diameter 5/16
Length 3/8
Material Steel
Grade Steel
Finish Zinc Plated
Drive Slotted
Head style Round
Threads per inch 18
Thread style Fully Threaded
Weight 32.0 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

Secure and durable fasteners for metal assemblies, our Machine Screws Slotted Round Zinc Plated 5/16-18 x 3/8 deliver reliable performance wherever precision and corrosion resistance are required.

Key specifications

  • Size (thread): 5/16-18 UNC
  • Length: 3/8 in
  • Head style: Round
  • Drive type: Slotted
  • Finish: Zinc plated

Why choose these machine screws?

Featuring a zinc-plated finish for corrosion resistance, these slotted round-head screws provide clean, flush seating in metal-to-metal connections. The 5/16-18 thread is common in many enclosures, panels, and equipment housings, making them a versatile choice for maintenance, assemblies, and repair work.

Applications

Ideal for electrical panels, control cabinets, automotive components, machinery assemblies, and other projects that require reliable slotted round-head machine screws.

Installation tips

  • Pair with a compatible nut or threaded hole and a driver suitable for slotted screws.
  • Ensure the screw length accommodates the material thickness without bottoming out.
  • Prepare threads with a light lubricant if needed to reduce friction and ease installation.

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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