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National Stock Number:
5310-01-049-1717
Federal Supply Class:
5310
National Item Identification Number:
010491717
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:
| 10488851 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | 3180116-4-5 | 59364 | HONEYWELL INTERNATIONAL INC. | | CAV10-88P | 11871 | RECON/OPTICAL, INC. | | CAV10-88P | 80294 | BOURNS INSTRUMENTS INC | | MBEU143546 | U1604 | MARTIN-BAKER AIRCRAFT COMPANY LIMITED |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.255 INCHES MINIMUM AND 0.260 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | AISI,COND HARD ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | OVERALL DIAMETER | 0.490 INCHES MINIMUM AND 0.495 INCHES MAXIMUM | | MATERIAL | STEEL COMP 302 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | CAP-177,FSCM 11871 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THICKNESS | 0.019 INCHES MINIMUM AND 0.021 INCHES MAXIMUM |
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