Flat Washer Standards

Standard uss flat washers the united states standards uss is a standard for inch based washers.

Flat washer standards. In stock and ready to ship. They prevent corrosion between a steel screw and an aluminum surface. 1 8 3 16 1 4 5 16 7 16 9 16 3 4 7 8 3 16 1 4 5 16 3 8 18 18 16 14 3 64 3 64 1 16 5 64 55400 29400 16200 9600 1 8 3 4 6 2 10 4 3 8 7 16 1 2 9 16 1 1 1 4 1 3 8 1 1 2 7 16 1 2 9. Flat washers are covered under the astm specification f844.

These hardened steel washers are designed for general purpose and structural use with bolts nuts studs and other threaded fasteners. Flat washers protect surfaces by evenly distributing torque when a bolt or screw is tightened. Washers provide a smooth bearing surface and are used under the head of a bolt and or a nut. Flat washers protect surfaces by evenly distributing torque when a bolt or screw is tightened.

Type b is a series of flat washers with tighter tolerances where outside diameters are categorized as narrow regular or wide for specific bolt sizes. The hot dip galvanized fastener finish helps to resist corrosion in demanding applications. Uss washers are often characterized as having slightly larger inside diameters and outside diameters to accommodate coarse or larger bolt threads. Choose from our selection of flat washers including general purpose washers metric general purpose washers and more.

Uss washers bolt diameter outside diameter hole diameter dimensions thickness gauge inches approx. Steel uss type a. Type a is a series of steel washers at broad tolerances where precision is not critical. A nylon washer can be placed under a machine screw to reduce noise and abrasion and offer electrical insulation.

Find standard sae flat washers at lowe s today. Astm f436 astm f436. Plain and hot dip galvanized. Asme b18 211 asme b18 211.

Size dimensional and tolerance data given is for type a plain flat washers ansi asme b18 22 1 type a plain washers designated by their nominal dimensions. Washer standards l9 r 26 an960 27 astm a325 and a490 1 astm f436 34 din 125 1a 281 din 125a 17 din 433 28 din 6916 8 din 7349 34. These washers are unhardened and intended for general use. 1 2 3 origin.

To request a quote for a standard uss washer fill out our fast quote form. 1000 pcs in lbs. Steel flat washer hot dip galvanized fastener finish. They prevent corrosion between a steel screw and an aluminum surface.

These washers surpass most other plastic washers when. Choose these washers for their adherence to strict military standards for material and construction.