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National Stock Number:
5310-01-618-6381
Federal Supply Class:
5310
National Item Identification Number:
016186381
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:
| 03311M1320 | 02591 | NAVAL AIR WARFARE CTR AIRCRAFT DIV | | 03311M1320-106 | 02591 | NAVAL AIR WARFARE CTR AIRCRAFT DIV | | 75A325991-2006 | U9143 | BAE SYSTEMS (OPERATIONS) LIMITED |
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Techincal Specification:
| END CUT ANGLE | 27.0 RADIANS NOMINAL | | CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.250 INCHES NOMINAL | | LENGTH | 0.62 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/12 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | ALUMINUM ALLOY 7075 OVERALL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER,CORNER;WASHER FRAME 29 | | PERIPHERAL SHAPE STYLE | RECTANGULAR | | SPECIAL FEATURES | LEFT BOTTOM CORNER OF WASHER IS RADIUSED 0.09INCHES;THIS WASHER IS THE OPPOSTITE OF 03311M1320-105 WASHER | | WIDTH ACROSS FLATS | 0.57 INCHES NOMINAL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-5541,CL 3 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-PRF-23377,TY I,CL C2 MIL SPEC 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CHROMATE AND PRIMER OVERALL | | THICKNESS | 0.064 INCHES NOMINAL |
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