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National Stock Number:
5310-01-298-8470
Federal Supply Class:
5310
National Item Identification Number:
012988470
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:
| 12577125 | 19200 | US ARMY ARDEC RDECOM | | 12577125 | 19206 | ARMY, UNITED STATES DEPARTMENT OF THE BUSINESS DEVELOPMENT DBA WATERVLIET ARSENAL | | K-268 | 1511A | SOLTAM SYSTEMS LTD. | | K-268 | 2291A | ELBIT SYSTEMS C4I AND CYBER LTD | | K-268 | S3151 | SOLTAM SYSTEMS LTD. DBA SOLTAM LTD. |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM | | HOLE DIAMETER | 14.2 MILLIMETERS NOMINAL | | MATERIAL | STEEL COMP 4142 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | PROPRIETARY CHARACTERISTICS | PACS | | OVERALL DIAMETER | 28.9 MILLIMETERS NOMINAL | | SPECIAL FEATURES | OUTSIDE EDGE TO BE CHAMFERED TO 0.5MM AT A 45 DEGREES ANGLE | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-P-16232E,TYPE M,CLASS 2 MIL SPEC ALL TREATMENT RESPONSES OVERALL | | SURFACE TREATMENT | PHOSPHATE OVERALL | | THICKNESS | 2.0 MILLIMETERS NOMINAL |
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