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National Stock Number:
5310-01-244-8937
Federal Supply Class:
5310
National Item Identification Number:
012448937
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:
| 27326R1 | 0SAT8 | KOMATSU AMERICA CORP. | | 27326R1 | 29510 | KOMATSU AMERICAN INTL CO | | 27326R1 | 338X5 | ND DEFENSE LLC | | ESP-F-16.104-PP | 338X5 | ND DEFENSE LLC | | 27326R1 | 89346 | NAVISTAR INTL CORP TRUCK BR OHIO PLANT |
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Techincal Specification:
| MATERIAL | STEEL OVERALL | | SURFACE TREATMENT | PHOSPHATE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | PERIPHERAL SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | SPECIAL FEATURES | 5/16" HARDENED WASHER, .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. | | PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER,LOCK .344X.688X.089 PHC | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 0SAT8 | | DESIGN CONTROL REFERENCE | 27326R1 |
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