Brass Machine Screw, Round Head, Slotted Drive, 1/4"-20, 3-1/2" Length (Pack of 25)

Brass Machine Screw, Round Head, Slotted Drive, 1/4"-20, 3-1/2" Length (Pack of 25) Reviews



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Brass Machine Screw, Round Head, Slotted Drive, 1/4"-20, 3-1/2" Length (Pack of 25) Feature

  • Machine Screws are often used with nuts or driven into tapped holes
  • Brass is suitable where corrosion resistance is a primary consideration
  • Round head style for a finished appearance
  • Driven by a flat-bladed driver
  • Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Brass is rust proof, corrosion resistant and polishes to a rich, golden color. Brass is easily soldered and brazed and accepts plating readily. The typical composition is 70% Copper and 30% Zinc. Strength increases with a higher percentage of Zinc.

Round head fasteners have a dome-shaped head. An older style of head, it is typically used when replacing existing round-head fasteners where an exact match is desired. Common applications for slotted screws include woodworking, although the drive style is not designed to be used with power drivers.

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.


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Mar 24, 2011 13:47:04

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