[100 PKG] Set Screws Socket Knurled Cup Point Alloy Thermal Black Oxide 4-40 X 3/8
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[100 PKG] Set Screws Socket Knurled Cup Point Alloy Thermal Black Oxide 4-40 X 3/8

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[100 PKG] Set Screws Socket Knurled Cup Point Alloy Thermal Black Oxide 4-40 X 3/8

Mutual ScrewSKU: 0406SSKBB
Price:
$14.25per 100( $0.14 each)
Pieces 100
Measurement type Inch
Thread size #4-40
Length 3/8
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

Set Screws Socket Knurled Cup Point Alloy Thermal Black Oxide 4-40 X 3/8 is a precision fastener designed for secure, vibration-resistant connections in metalworking, machinery, and equipment.

These socket-set screws feature a socket drive for easy tool access, a knurled cup point to maximize grip on mating surfaces, and an alloy steel core finished with a durable thermal black oxide. The combination delivers reliable retention and resistance to loosening under load and vibration.

  • Thread size: 4-40
  • Length: 3/8 in
  • Point type: Knurled Cup
  • Drive type: Socket (internal hex)
  • Material: Alloy steel
  • Finish: Thermal Black Oxide

Ideal for securing pulleys, gears, collars, and other components in small assemblies, electronics enclosures, and precision fixtures. The knurled cup point provides commanding grip, while the thermal black oxide finish offers added wear resistance and a low-glare appearance. Use with an appropriate Allen wrench to install or remove, and avoid over-tightening to maintain optimal grip over time.

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