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15% Discount: Stainless Steel Machine Screw, Drilled Fillister Head, Slotted Drive, MIL-SPEC

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Stainless Steel Machine Screw, Drilled Fillister Head, Slotted Drive, MIL-SPEC

Description

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.

Stainless steels are used for their corrosion resistance, high-temperature strength, scaling resistance, and low-temperature toughness.  These properties account for their extremely wide use in practically every industry. Austenitic Stainless Steels are alloys of iron and carbon that contain between 16% and 30% Chromium, a maximum of 0.15% carbon, along with Nickel (or Manganese), and other alloying elements.  The chromium, which helps develop a passive surface oxide film, provides corrosion resistance in stainless steels.   Austenitic Stainless Steels are designated by a 3 digit SAE Stainless Steel Grade beginning with the number 3 (e.g. 304, 316).  Another common naming convention for Austenitic Stainless Steels are 18/8, 18/10, 18/0, etc. where the 18 refers to the % of Chromium and 8 to the % of Nickel contained in the material.    

Fillister head fasteners are considered an improvement over round head equivalents - the smaller head creates more downward pressure for a given torque level and the thicker head plus deeper drive slot allows higher torque levels to be generated. Often used in aircraft fastening applications, drilled-head fasteners have a small hole drilled from one side of the head through to the other side - allowing lengths of wire to be used to prevent loosening on adjacent fasteners by wiring them together. 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.

Specifications


Features

  • Machine Screws are often used with nuts or driven into tapped holes
  • Stainless Steel is suitable where formability and cost are important considerations
  • Fillister head for high torque and good hold-down strength
  • Driven by a flat-bladed driver

    • Details


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