National Item Identification Number

01-371-0172

National Stock Number

Item Name

WASHER,FLAT

Federal Supply Class

5310

Description

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use SHIM. For items fabricated from ceramic or electrically rated materials by specification or industry standards use INSULATOR (1), WASHER. Excludes DISK, VALVE, graphite impregnated and lubricated items.

Commercial and Government Entity Code (Supplier Data)

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K4629

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REYNOLDS BOUGHTON LTD
GRAYCAR BUSINESS PARK BARTON UNDER N
EDWOOD
BURTON ON TRENT
DE13 8EN
UNITED KINGDOM
01283 711771

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K7837

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INDUSTRIAL FASTENERS LTD
WATERWELLS DRIVE QUEDGELEY
GLOUCESTER
GL5 4FR
UNITED KINGDOM
01452 880500

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80372

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MARINE CORPS
NAVY ANNEX
WASHINGTON
DC
20380

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Reference Numbers (Part Numbers)

BW10257
035297 7
87024A0586

Required Categories

HOLE DIAMETER
PERIPHERAL SHAPE STYLE
OVERALL DIAMETER
CENTER HOLE SHAPE STYLE

Required Description

1.280 INCHES NOMINAL
1 ROUND
2.375 INCHES NOMINAL
1 ROUND
1 RECTANGULAR
0.1