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National Stock Number:
5310-01-098-4321
Federal Supply Class:
5310
National Item Identification Number:
010984321
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:
| 4G13844-101A | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| HOLE DIAMETER | 0.755 INCHES MINIMUM AND 0.760 INCHES MAXIMUM | | HOLE WIDTH ACROSS FLATS | 0.520 INCHES MINIMUM AND 0.525 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-18729,COND N OR A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | PERIPHERAL SHAPE STYLE | DEE | | MATERIAL | STEEL COMP 4130 OVERALL | | OUTSIDE LEFT CORNER CHAMFER ANGLE | 45.0 DEGREES NOMINAL | | OVERALL DIAMETER | 1.250 INCHES NOMINAL | | SPECIAL FEATURES | THIS ITEM IS CRITICAL TO THE FUNCTION OF THE C-5 LANDING GEAR. ALL SPECIFIC ACTIONS, DIMENSIONS AND TOLERANCES PERTAINING TO THIS ITEM MUST BE MET TOENSURE PROPER FUNCTION OF THIS ITEM AND THE LANDING GEAR. ESA REQUIRES STRIC T OVERSIGHT TO ENSURE THAT ALL TECH REQUIRMENTS ARE CURRENT | | THICKNESS | 0.180 INCHES NOMINAL | | WIDTH | 1.180 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | BLANK RECTANGULAR | | CRITICALITY CODE JUSTIFICATION | FEAT | | CENTER HOLE SHAPE STYLE | ROUND W/FLATS |
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