Tab Washers

Tab Washers

Category : Washers

Tab Washers are round shaped washer with a single or multiple tab to prevent both the nut and washer from rotating in a bolting assembly. Tab washers also have notches that can be formed to shape around bolts/nuts or designed to lay flat. Tab washers can be manufactured by stamping or laser cut.Tab washers are further categorized into internal tab washers and external tab washers. Tabs can be short can long.

Tab washers also known as "Tab Key and Notched Washers" or "Tab Lock Washers". BoltPort produces these lock washers in metric and imperial sizes with variety of material and customization. Zinc Plated, Stainless Steel 304, 316, Hastelloy C276 &Monel 400 are most common choice for tab washers.


Sizes and Threads

Forming : Hot & Cold Punched
Size : M3 to M100 in Metric, 5/16" to 4" in Imperial
Thickness : Standard and Custom
Standards : DIN, ASME, ISO & IS.

Dimension Standards

DIN 93, DIN 432, DIN 462, DIN 463, UNI 1747, UNI 1749, UNI 6600, PN 82022

Manufacturing Grades (Other)

High Tensile Grade 8.8, 10.9, 12.9, Stainless Steel, 304, 316, 316ti, 321, 904L, Duplex 2205, S31803, Super Duplex, 2507, S32750, F55, S32760, Zeron 100, Inconel 600, 601, 625, 718, 925, Incoloy 800, 800, 800ht, 825, Hastelloy B2, B3, C22, C276, C2000, X, Monel 400, R405, K500, Titanium Grade 2, 5, 7, 9, 12, 23, Copper Nickel, Silicon Bronze, Aluminum & Phosphor Bronze, Tantalum, etc.

ASTM Specifications

ASTM A36, ASTM A167, ASTM A240, ASTM A283, ASTM A387, ASTM A516, ASTM A572, ASTM A829, ASTM A633, ASTM A656, ASTM B127, ASTM B162, ASTM B171, ASTM B209, ASTM B424, ASTM B463, ASTM B551, ASTM B749, ASTM B755, etc.

Compatibility (Other)

Product / Thread System Heavy Hex Bolts Heavy Hex Nuts Hardened Heavy Washers
Imperial ASME B18.2.1 ASME B18.2.2 ASME B18.21.1
Metric ASME B18.3.6M ASME B18.4.6M ASME B18.22M
Metric DIN 6914 DIN 6915 DIN 6916