[100 PKG] Set Screws Socket Knurled Cup Point Alloy Thermal Black Oxide 4-40 X 1/8
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[100 PKG] Set Screws Socket Knurled Cup Point Alloy Thermal Black Oxide 4-40 X 1/8

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[100 PKG] Set Screws Socket Knurled Cup Point Alloy Thermal Black Oxide 4-40 X 1/8

Mutual ScrewSKU: 0402SSKBB
Price:
$13.60per 100( $0.14 each)
Pieces 100
Measurement type Inch
Thread size #4-40
Length 1/8
Material Steel
Grade Alloy Steel
Finish Thermal Black Oxide
Drive Socket
Point type Knurled Cup
Threads per inch 40
Weight 1.0 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, precise, and durable, the Set Screws Socket Knurled Cup Point Alloy Thermal Black Oxide 4-40 x 1/8 is designed for high-precision retention in machinery, fixtures, and assemblies. The knurled cup point delivers a strong bite into soft materials without marring surfaces, while the alloy steel core provides lasting strength. The thermal black oxide finish offers corrosion resistance and a low-gloss appearance for clean, professional hardware installations.

Key features

  • Type: Socket set screw for internal hex drive
  • Point style: Knurled cup point for secure grip and load distribution
  • Material: Alloy steel for high strength
  • Finish: Thermal black oxide for corrosion resistance and reduced glare
  • Thread size: 4-40
  • Length: 1/8 in

Specifications

  • Thread size: 4-40
  • Length: 1/8 in
  • Point style: Knurled cup
  • Drive type: Socket (internal hex)
  • Material: Alloy steel
  • Finish: Black oxide (thermal)

Applications

Ideal for securing components in pulleys, gears, collars, and fixtures where a shallow head and strong, vibration-resistant hold are essential. The knurled cup point provides reliable engagement on both hard and soft surfaces, making these screws a dependable choice for hardware assemblies in manufacturing, automotive, electronics, and woodworking projects.

Benefits

  • Enhanced grip and load distribution with knurled cup point
  • Low-profile installation suitable for tight spaces
  • Improved corrosion resistance with black oxide finish
  • High-strength alloy steel for durability and long service life
  • Clean, recessed appearance with socket drive

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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