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National Stock Number:
5310-01-175-3737
Federal Supply Class:
5310
National Item Identification Number:
011753737
Description:
WASHER,FLAT
Detail:
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.
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Manufacturer Information:
| 298D193 PIECE 8 | 90099 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 298D197 PIECE 4 | 90099 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | BLANK RECTANGULAR | | HOLE DIAMETER | 3.750 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-890,CL B,TY 5 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | PROPRIETARY CHARACTERISTICS | PACS | | OUTSIDE LEFT CORNER CHAMFER ANGLE | 45.0 DEGREES NOMINAL | | OVERALL DIAMETER | 5.344 INCHES NOMINAL | | SPECIAL FEATURES | CHAMFER 0.125 IN. OUTSIDE LEFT CORNER | | THICKNESS | 0.375 INCHES NOMINAL |
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