McGuire Glossary of Fastener Terminology

A - 10 terms

A286 - This is an iron-based superalloy which features an austenitic structure with high amounts of nickel and chromium. A286 (or Incoloy) is ideal for high strength and corrosion resistance up to 704 degrees C and for lower stress applications at high temperatures. Low temperature capabilities including ductility, non-magnetic, high strength at -196 degrees C

ABS (PLASTIC) - Excellent impact strength and impact resistance. Used extensively in appliances, automotive and computer components. May be painted and plasted.

ACETAL (DELRIN(R), CELCON(R) (PLASTICS) - Acetals display good impact resistance, dimensional stability and outstanding surface hardness due to their high degree of crystalinty. They have high dielectric strength and are resistance to many solvents. They also exhibit negligible water absorption. Typical applications include roller bearings, gears, reels, counters, control cams, valves and pump parts.

ADDENDUM - A supplement, addition or attachment to the fastener standard

ALLOWANCE - The prescribed diference between the desgin thread form and basic size. Allowances can be used either to accommodate thread coatings or faciliate assembly

AMEDMENT - A correction, change, or modification to the main contents of the standard

ANS - American National Standard

ANSI - American National Standards Institute

ASD - Accredited Standards Committee

ASTM F1941 - This the standard specification for electrodeposited coatings on threaded fasteners. This plating specificatin is recommended when determining the proper application, performances and dimensional requirements for electrodeposited coatings on threaded fasteners.