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National Stock Number:
5310-01-150-9504
Federal Supply Class:
5310
National Item Identification Number:
011509504
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:
| 196B8836 | 05606 | GENERAL DYNAMICS-OTS, INC. |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM | | HOLE DIAMETER | 0.266 INCHES MINIMUM AND 0.286 INCHES MAXIMUM | | LENGTH | 0.700 INCHES MINIMUM AND 0.740 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-18729,COND A,MA,N MIL SPEC SINGLE MATERIAL RESPONSE OVERALL OR ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 4130 OVERALL | | PERIPHERAL SHAPE STYLE | RECTANGULAR | | PROPRIETARY CHARACTERISTICS | PACS | | SPECIAL FEATURES | COUNTERSINK ONE SIDE 0.334 IN. MIN. AND 0.344 IN. MAX,DIA. AND 44 DEGREES MIN. AND 45 DEGREES MAX. AND SOLID FILM LUBRICANT TO BE APPLIED TO ALL SURFACES OF ITEM | | WIDTH ACROSS FLATS | 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DOD-P-16232,TY M,CL 3 MIL SPEC 1ST TREATMENT RESPONSE OVERALL OR DOD-P-16232,TY M,CL 3 MIL SPEC 2ND TREATMENT RESPONSE OVERALL OR DOD-P-16232,TY Z,CL 3 MIL SPEC 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PHOSPHATE OVERALL OR ZINC OVERALL | | THICKNESS | 0.140 INCHES NOMINAL |
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