Flat Washer Standards

These washers are unhardened and intended for general use.

Flat washer standards. Flat washers protect surfaces by evenly distributing torque when a bolt or screw is tightened. A nylon washer can be placed under a machine screw to reduce noise and abrasion and offer electrical insulation. Flat washers protect surfaces by evenly distributing torque when a bolt or screw is tightened. Flat washers are covered under the astm specification f844.

Choose these washers for their adherence to strict military standards for material and construction. Find standard sae flat washers at lowe s today. The type b plain washers come in narrow regular and wide series with proportions designed to distribute the load over larger areas of lower strength materials. These hardened steel washers are designed for general purpose and structural use with bolts nuts studs and other threaded fasteners.

1 2 3 origin. These washers surpass most other plastic washers when. They prevent corrosion between a steel screw and an aluminum surface. Asme b18 211 asme b18 211.

Standard uss flat washers the united states standards uss is a standard for inch based washers. 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. Uss washers bolt diameter outside diameter hole diameter dimensions thickness gauge inches approx. 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.

Steel uss type a. 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.

Number in 100 lbs. To request a quote for a standard uss washer fill out our fast quote form. The american national standards institute ansi provides standards for general use flat washers. 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.

Uss washers are often characterized as having slightly larger inside diameters and outside diameters to accommodate coarse or larger bolt threads. 1000 pcs in lbs. Plain and hot dip galvanized. The hot dip galvanized fastener finish helps to resist corrosion in demanding applications.

Type a is a series of steel washers at broad tolerances where precision is not critical. Choose from our selection of flat washers including general purpose washers metric general purpose washers and more.