Questions about Screws
What does federal supply class 5305 cover?
Federal supply class 5305 covers screws. Items filed here include machine screws, hexagon head cap screws, socket head cap screws, and setscrews.
How is a part in federal supply class 5305 identified?
The kind of screw is part of the item name on each federal record. The NSN carries the characteristics on file for that exact screw, and the part numbers cross-referenced to it let a buyer work from an MS number, a manufacturer number, or a drawing callout. Each item in the class has its own National Stock Number (NSN) record, listed above.