Flat, Spring, Tooth Lock, Conical & Specialty Washers
Washers are commodity fasteners but consistent thickness and dimensional tolerance matter — especially in structural and high-torque applications. HDBolt sources from factories running automated stamping with regular tolerance checks.
Sub-categories
Flat Washer
DIN 125 flat washers are the standard general-purpose washer, used to distribute clamping load and protect the surface u...
Fender Washer / Large OD Washer
Fender washers (DIN 9021) have an outside diameter approximately 3 × the bolt diameter — much larger than a standard DIN...
Spring Lock Washer
DIN 127 split spring washers have an angled cross-section that compresses flat under bolt preload. They are widely used ...
Tooth Lock Washer / Star Washer
Tooth lock washers have radial teeth (internal, external, or both) that bite into the mating surfaces, providing some an...
Square Washer
Square washers (square plate washers) are heavy steel plates with a center hole, used to distribute load over wood membe...
Conical Spring Washer
Conical (Belleville) spring washers are dished steel washers that act as a stiff spring under bolt preload. As the bolt ...
Wedge Lock Washer (Nord-Lock Style)
Wedge lock washers come in pairs. The two washers face each other with cam profiles between them and radial teeth on the...
Sealing Washer / Bonded Seal
A bonded seal (also called a Dowty washer) consists of a metal washer with an inner ring of rubber vulcanized in place. ...
Structural Washer (F436)
ASTM F436 hardened structural washers are designed for use with A325 and A490 high-strength structural bolts. The harden...
Plate Washer
Plate washers are thick steel plates (square or round) with a center hole, used for heavy load distribution under anchor...