5310-00-187-2396 WASHER,FLAT Index 5310-00-187-2398 WASHER,FLAT

National Stock Number:
5310-00-187-2397

Federal Supply Class:
5310

National Item Identification Number:
001872397

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.


Manufacturer Information:
004-003081-01226916NORTHROP GRUMMAN SYSTEMS CORPORATION
10194104A486GNIMIKKEISTOKESKUS NCB FINLAND
8597292-10424617GENERAL MOTORS CORP
8597292-10499974DELCO ELECTRONICS CORP DELCO SYSTEMS OPNS
AN960PD4L81352AIR FORCE-NAVY AERONAUTICAL SPECIFICATIONS PROMULGATED BY AERONAUTICAL STANDARDS GROUP
AN960PD4L88044AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE
LD153-0011-000543999THE BOEING COMPANY
LD153-0011-000589372ROCKWELL INTERNATIONAL CORP NORTH AMERICAN AIRCRAFT OPNS


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM
OVERALL DIAMETER0.307 INCHES MINIMUM AND 0.332 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 2024 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCHROMATE OR ANODIZE OVERALL
THICKNESS0.013 INCHES MINIMUM AND 0.019 INCHES MAXIMUM


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