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Alloy Steel Socket Cap Screw, Black Oxide Finish, Button Head, Internal Hex Drive, Meets ASME B18.3/ASTM F835, 2" Length, Fully Threaded, 1/4"-20 UNC Threads, Imported (Pack of 100)

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Product Specifications
Head Diameter
5  millimeters
Head Height
1.5  millimeters
Overall Length
2  inches
Size Name
Thread Size
Thread Coverage
Fully Threaded
Hex Wrench
3/16  inches
Import Designation
Number of Items
Thread Class
Thread Style
Specification for this product family (See all  products)
Drive Style
Internal Hex
Material Type
Alloy Steel
Part Number
Brand Name
Small Parts
Exterior Finish
Black Oxide
Specification Met
ASME B18.3 , ASTM F835
Head Style
Thread Style
Right Hand
System of Measurement

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Key Features

  • Alloy steel is often used in applications where strength is the primary consideration
  • Black oxide finish offers mild corrosion resistance and lubricity
  • Button head has a rounded, low-profile top that is suitable for light duty applications
  • Internal hex drive has a hexagonal slot that turns using an Allen key driver
  • Meets ASME B18.3 and ASTM F835 specifications

Package Details

Shipping Weight: 2.5 pounds
Package Size: 6.2 x 3.3 x 2.7 inches

Product Description

The alloy steel socket cap screw has a black oxide finish and a button head with an internal hex drive, and meets American Society of Mechanical Engineers ASME B18.3 and American Society for Testing and Materials ASTM F835 specifications. Alloy steel is often used in applications where strength is the primary consideration. The black oxide finish offers mild corrosion resistance and lubricity. The button head is round with a low profile and short vertical sides, and is suitable for light duty applications. The internal hex drive, also known as a hex-socket drive, has a hexagonal slot that requires an Allen key driver, also known as a hex key or Allen wrench.

Socket cap screws are threaded fasteners that have a cap head with an internal socket drive for installing in areas with limited side clearance. These screws are available with a variety of head shapes, which determine how the screw interacts with the mating surface, and drive styles, which determine the type of tool required to install the screw.

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