Body

The unthreaded portion of the shank.…

Blank

A fastener where one or two stages of manufacturing have been performed, but the fastener has not been finished.…

Binder Head

Old term for pan head, “binder” has now come to mean “binding” head screws rather than pan.…

Bevel

A small slant, usually describing a flat washer which is square and thicker on one side than the other…

Bearing Surface

The part of a fastener such as the washer face of a nut or under the head of a machine screw that actually comes in contact with the part it fastens.…

Austenitic

AUSTENITIC – Refers to 300 series stainless, the most popular of the stainless alloys accounting for 85% – 90% of stainless fasteners sold. Named for Sir Robert Williams Austen, an English metallurgist, austenitic stainless is a crystal structure formed by …

Anneal

To heat metal in order to lower its hardness. The term anneal refers to the heat treatment given all 300 series stainless and most 400 series stainless by the steel mill after the raw material has been completed but before …

Anchor Bolt

A fastener intended to be embedded in concrete with the threaded end protruding to anchor material to the concrete.  Usually bent, deformed or shaped in a way as to resist “pull out” from the concrete.…

Alloy Steel

A mixture (or alloy) of ordinary steel added to other metals besides carbon with the specific purpose of attaining certain characteristics such as higher strength. A few exceptions to this definition exist, however, so that a chromium content above 4% …

Aircraft Quality

Fasteners made with a particularly high level of attention in manufacture and inspection.…


Mission Statement

EDSCO will be the preferred supplier of the products that we sell by being exceptionally reliable and operating with the highest level of integrity, while focusing on meeting our customers' needs.