Stainless Steel 18-8 Socket Cap Screw, Flat Head, Hex Socket Drive, M3-0.5, 25mm Length (Pack of 25)

by Small Parts

Product Features

• Socket Cap Screws are durable and reliable
• General Purpose Stainless Steel suitable where formability and cost are important considerations
• Flat head style allows fastener to sit flush to the surface
• Drive system is a hexagon-shaped hole
• Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads

Product Details

• Shipping Weight: 1 pounds
• Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
• ASIN: B000Q5UN7E

Product Description

Socket Cap Screws, also known as Allen head screws, are reliable and durable and are used in many applications. They are available in a variety of head styles and materials.

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 % of Nickel contained in the material.

Stainless Steel 18-8 denotes 18% chromium and 8% nickel. Stainless Steel 18-8 can be formed and welded. Stainless Steel 18-8 is typically non-magnetic, though the material can become slightly magnetic when cold worked (cold working refers to altering the physical properties of the material without the use of temperature).

Flat head fasteners are designed to fit flush to the surface when used with countersunk holes. Length is measured from the top of the head. Hex socket drive systems are driven by hex wrenches or power tools with hexagonal bits.

A threaded fastener's size name includes information about the major external diameter (in millimeters), followed by the thread pitch (millimeters per thread), 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.