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National Stock Number:
5310-01-361-8386
Federal Supply Class:
5310
National Item Identification Number:
013618386
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:
| 10039259 | 61C19 | MIL-COTS CORPORATION | | 12759-00196 | 0Y3H3 | FASTENAL COMPANY | | 33113 | 0Y3H3 | FASTENAL COMPANY | | 25707R1 | 338X5 | ND DEFENSE LLC | | 25707R1 | 89346 | NAVISTAR INTL CORP TRUCK BR OHIO PLANT | | 25707R1 | Z0009 | INTERNATIONAL TRUCKS AUSTRALIALIMITED | | 5320000007-00 | 338X5 | ND DEFENSE LLC | | 5320000037-00 | 338X5 | ND DEFENSE LLC | | ESP-F-16.101-GS | 338X5 | ND DEFENSE LLC | | ESP-F-16.104-PP | 338X5 | ND DEFENSE LLC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.281 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | 1040 TO 1065 PER CEMS A-0, PART 1, QUENCHED AND TEMPERED TO RC 36 TO 42 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | III PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER,FLAT 1/4 (.281X.625X.07 | | PERIPHERAL SHAPE STYLE | ROUND | | PROPRIETARY CHARACTERISTICS | NPAC | | OVERALL DIAMETER | 0.625 INCHES NOMINAL | | SPECIAL FEATURES | 5/16 HARDENED WASHERS, .344 NOM ID,.688 NOM OD,.089 NOM THICKNESS.STEEL 1040 TO 1065 PER CEMS A-0,PART 1,QUENCHED AND TEMPERED TO RE36 TO 42. THESE WASHERS ARE INTENDED FOR USE IN HIGH CLAMPING LOADS, TO MINIMIZE EMBEDDING, AND TO AID TORQUING. | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ZINC TRIVALENT (ZN6A) CEMS G-20, CLASS 20, CLASS 6A MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | THICKNESS | 0.075 INCHES NOMINAL |
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