Small or large disfigurations in a fasteners such as pits, tool marks, voids, laps, folds, etc. Minor discontinuities are typically allowed, major as defined by various military specifications, MS, AN [..]

Typically refers to standard sheet metal screw points. Sharp point, fewer threads and deeper than a type “AB” sheet metal screw. A standard off the shelf sheet metal screw in 18-8, some 316ss and carb [..]

Stands for Army/Navy. AN Bolts, AN Washers, AN Screws

American National Standards Institute

American Society of Mechanical Engineers.

Typical standards for fasteners and related products. ANSI B18.3 Socket Heads, ANSI B18.2.1 Hex Heads, ANSI B18.6.3 Nuts, ANSI B18.2.2 Nuts, etc.

American Society for Testing and Materials. ASTM A193 Hex Heads, ASTM A194 Hex Nuts, etc. ASTM F593 Hex Heads, ASTM F594 Hex Nuts

To use heat treatment methods to reduce material hardness.

or 300 series, stainless steels make up over 70% of total stainless steel production. They contain a maximum of 0.15% carbon, a minimum of 16% chromium and sufficient nickel and/or manganese to retain [..]

Refers to sheet metal screws with a blunt point and more threads per inch then a typical type A sheet metal screw.