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National Stock Number:
5310-01-341-4739
Federal Supply Class:
5310
National Item Identification Number:
013414739
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:
| 12592060 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 4.270 INCHES NOMINAL | | OVERALL DIAMETER | 5.610 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A570,GR 36 OR 40 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A109 ASSN STD 2ND MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | SPECIAL FEATURES | 12 SLOTS:10 DEGREES BETWEEN EACH ONE;6 ON TOP AND 6 ON BOTTOM;2 MOUNTING HOLES:0.208 DIAMETER;EACH SLOT 0.032 WIDE;EACH SLOT 0.250 LONG | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CHROMATE OVERALL | | THICKNESS | 0.0410 INCHES NOMINAL |
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