#4-40 X 1/2" Machine Screws | Round Head | Slotted Drive | 18/8 Stainless Steel (5000/Pkg.)

Mutual ScrewSKU: 0408MSR188KC

Price:
Sale price$212.06per 5000( $0.04 each)
Pieces 5000
Measurement type Inch
Thread size #4-40
Diameter 4
Length 1/2
Material 18/8 Stainless Steel
Grade 18/8
Finish Plain
Drive Slotted
Head style Round
Threads per inch 40
Thread style Fully Threaded
Weight 7.0 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

Upgrade your assemblies with our Machine Screws Slotted Round Head, crafted from 18/8 stainless steel for exceptional corrosion resistance and dependable strength. These 4-40 UNC screws in a 1/2 inch length are ideal for precise, low-profile fastening in electronics enclosures, appliances, and light machinery. The slotted drive and round head design deliver a clean, professional finish while remaining easy to install with standard tools.

Key features

  • Material: 18/8 stainless steel (304) for corrosion resistance and durability
  • Head style: Slotted round head for a classic look and flush appearance
  • Drive type: Slotted to fit common screwdrivers
  • Thread size: 4-40 UNC
  • Length: 1/2 inch

Specifications

  • Material: 18/8 stainless steel (304)
  • Head: Round
  • Drive: Slotted
  • Thread: 4-40 UNC
  • Length: 1/2 in

Applications

  • Electronics enclosures and housings
  • Small metal assemblies in appliances and equipment
  • Hobby projects and DIY repairs requiring precise, compact fasteners

Why choose these screws

  • Superior corrosion resistance in humid or indoor environments
  • Strong holding power in thin metals and lightweight structures
  • Compatibilidad with standard slotted screwdrivers for quick installation

Installation tips

  • Use with appropriate 4-40 thread nuts or tapped holes for secure fastening
  • Ensure holes are clean and aligned before driving to avoid cross-threading
  • Insert with steady pressure and avoid over-torquing to prevent stripping

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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