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National Stock Number:
5310-01-144-3123
Federal Supply Class:
5310
National Item Identification Number:
011443123
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:
| 124-1A-1-2 | 82005 | ALLARD NAZARIAN GROUP, INC. | | 124-1A-1-2L1 | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG |
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Techincal Specification:
| MATERIAL | NICKEL ALLOY OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-286 CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | MOLYBDENUM OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 2.385 INCHES NOMINAL | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 4.375 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.250 INCHES NOMINAL | | HARDNESS RATING | 265.0 BRINELL MINIMUM AND | | 320.0 BRINELL MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES TOP | | 32.0 MICROINCHES BOTTOM | | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS | | CRITICALITY CODE JUSTIFICATION | ZZZY | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 82005 | | DESIGN CONTROL REFERENCE | 124-1A-1-2 |
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