5310-01-355-0988 NUT,PLAIN,ROUND Index 5310-01-355-0990 WASHER,FLAT

National Stock Number:
5310-01-355-0989

Federal Supply Class:
5310

National Item Identification Number:
013550989

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:
S8157N164-10770210HONEYWELL INTERNATIONAL INC.


Techincal Specification:
HOLE DIAMETER0.390 INCHES MINIMUM AND 0.400 INCHES MAXIMUM
OVERALL DIAMETER0.620 INCHES MINIMUM AND 0.640 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6721 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-7720 MIL SPEC 5TH MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 321 OR STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 316 OR STEEL COMP 303 OVERALL
THICKNESS0.102 INCHES MINIMUM AND 0.112 INCHES MAXIMUM


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