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National Stock Number:
5310-01-555-5018
Federal Supply Class:
5310
National Item Identification Number:
015555018
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:
| 10018995 | 61C19 | MIL-COTS CORPORATION | | 12759-00461 | 0Y3H3 | FASTENAL COMPANY | | 33863 | 0Y3H3 | FASTENAL COMPANY | | 3011681 | 1EFH8 | GENERAL DYNAMICS LAND SYSTEMS - FORCE PROTECTION INC. |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.688 INCHES NOMINAL | | OVERALL DIAMETER | 1.750 INCHES NOMINAL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | FLAT WASHER | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTMF436 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | FINISH: YELLOW ZINC, THRU-HARDENED | | SPECIAL TEST FEATURES | BOLT COMPATIBILITY: GRADE 8, BOLT SIZE: 5/8" | | SUPPLEMENTARY FEATURES | PRODUCT WEIGHT: 0.077LBS | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTMB633, SC1 TYPE 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | THICKNESS | 0.134 INCHES NOMINAL |
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