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National Stock Number:
5310-01-517-0178
Federal Supply Class:
5310
National Item Identification Number:
015170178
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:
| 69-52580-2 | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM | | MATERIAL | ALUMINUM ALLOY 7075 BODY | | III HEAT TREATMENT | T-6 SOLUTION HEAT TREATED, ARTIFICALLY AGED | | PERIPHERAL SHAPE STYLE | ROUND | | PROPRIETARY CHARACTERISTICS | PACS | | OVERALL DIAMETER | 0.800 INCHES NOMINAL | | SPECIAL FEATURES | HPART NAME ASSIGNED BY CONTROLLING AGENCY - WASHER-SEAL, WINDSHIELD, NUMBER 1; CORNER RADII MINIMUM 0.160 INCH ON INTERNAL RADII AND 0.000 TO 0.250 INCH EXTERNAL RADII; NEXT HIGHER ASSEMBLY P/N 5-71761 | | THICKNESS | 0.036 INCHES NOMINAL |
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