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National Stock Number: 5310-01-468-7222
Federal Supply Class: 5310
National Item Identification Number: 014687222
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:
MS51496 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | MS51496-11 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
MATERIAL | ALUMINUM ALLOY 2024 OVERALL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/5 2024-T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | SURFACE TREATMENT | ANODIZE OVERALL | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE I OR TYPE II,CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE OR | | MIL-C-5541,CLASS A MIL SPEC 2ND TREATMENT RESPONSE OVERALL | CENTER HOLE SHAPE STYLE | ROUND | HOLE DIAMETER | 0.189 INCHES MINIMUM AND | | 0.199 INCHES MAXIMUM | PERIPHERAL SHAPE STYLE | ROUND | OVERALL DIAMETER | 0.305 INCHES MINIMUM AND | | 0.315 INCHES MAXIMUM | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | THICKNESS | 0.029 INCHES MINIMUM AND | | 0.032 INCHES MAXIMUM | HARDNESS RATING | 30.0 ROCKWELL C MINIMUM | SPEC/STD CONTROLLING DATA | | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS51496 | MANUFACTURERS CODE | 96906 | DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS51496-11 |
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