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National Stock Number:
5310-99-610-6463
Federal Supply Class:
5310
National Item Identification Number:
996106463
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:
| 986-B-68 | U4271 | ROLLS-ROYCE CONTROLS AND DATA SERVICES LIMITED | | 986B68 | K1464 | GOODRICH CONTROL SYSTEMS LTD T/A GOODRICH ENGINE CONTROL SYSTEMS | | 986B68 ZZ | K1464 | GOODRICH CONTROL SYSTEMS LTD T/A GOODRICH ENGINE CONTROL SYSTEMS | | 986B68 | U4287 | ROLLS-ROYCE CONTROLS AND DATA SERVICES LIMITED |
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Techincal Specification:
| CRITICALITY CODE JUSTIFICATION | FEAT | | HOLE DIAMETER | 0.505 INCHES MINIMUM AND 0.515 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | BS S80 FED STD SINGLE MATERIAL RESPONSE | | MATERIAL | STEEL | | OVERALL DIAMETER | 1.180 INCHES MINIMUM AND 1.190 INCHES MAXIMUM | | SPECIAL FEATURES | ONE HOLE DRILLED THROUGH WASHER 0.1386 IN. MIN,0.1516 IN. MAX DIA,CENTRE OF HOLE 0.465 IN. MIN 0.470 IN. MAX FROM CENTRE OF WASHER,HOLE HAS SURFACE TEXTURE OF 250 MICROINCHES CLA | | SURFACE FINISH | 125.0 MICROINCHES | | THICKNESS | 0.095 INCHES MINIMUM AND 0.105 INCHES MAXIMUM |
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