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National Stock Number:
5310-01-281-3401
Federal Supply Class:
5310
National Item Identification Number:
012813401
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:
| A3013129-14 | 51792 | APOLLO AEROSPACE COMPONENTS LLC | | A3013129-14 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR | | A3013129-14 | 8U495 | SPECIAL-T-METALS CO INC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | COLOR | BLACK OVERALL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 4.13 MILLIMETERS NOMINAL | | OVERALL DIAMETER | 6.35 MILLIMETERS NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC ALL MATERIAL RESPONSES OR 66 FED STD ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 309 OR STEEL COMP 310 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | OXIDE OVERALL | | THICKNESS | 0.15 MILLIMETERS MINIMUM AND 0.25 MILLIMETERS MAXIMUM |
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