Set Screws, also known as grub screws, are headless fasteners designed to secure one component within or against another, typically without the need for a nut. They are primarily used in mechanical assemblies, such as fastening gears, pulleys, or collars to shafts. The absence of a head allows the screw to sit entirely within a tapped hole for a flush, unobtrusive fit.

Set screws are available in both metric and imperial sizes and come in various point styles including cup point, flat point, oval point, extended tip, and swivel pad, each tailored for specific holding applications and surface conditions.

These screws are typically driven using a hex socket (Allen key) or slotted drive, depending on the design requirements. They are manufactured in a wide range of high-performance materials, including:

• Carbon Steel: Grades 4.6, 8.8, 10.9, 12.9

• Stainless Steel: 304, 316, 316Ti, 321, 309, 310, 347, 904L

• Duplex & Super Duplex: 2205 (S31803/S32205), 2507 (S32750/S32760)

• High-Performance Alloys: Titanium Grades 2 & 5, Monel 400, Alloy K500, Alloy 20, Alloy A286, Hastelloy C276, Inconel 625 & 718, Incoloy 800HT & 825

These material options make set screws suitable for high-stress, high-temperature, and corrosive environments across industries such as automotive, aerospace, marine, chemical, and heavy engineering.