5310-14-256-3120 WASHER,FLAT Index 5306-14-256-3137 BOLT,HOOK

National Stock Number:
5310-14-256-3121

Federal Supply Class:
5310

National Item Identification Number:
142563121

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:
23134CA120F0111BUREAU NORMALISATION AERONAUTIQUEESPACE
23134CA120F6760DEMAT SA
L23134-120CAF0111BUREAU NORMALISATION AERONAUTIQUEESPACE
405187F0302SAFRAN TRANSMISSION SYSTEMS
405187F6137SAFRAN LANDING SYSTEMS
23134CA120F7411MECAERO ARCONIC FASTENING SYSTEMS AND RINGS TOULOUSE
L23134-120CAKCF40ANIXTER LTD


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER12.5 MILLIMETERS NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONF3025 AIR 9160C MIL STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP Z2CN18-10 OVERALL
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER20.0 MILLIMETERS NOMINAL
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS2.5 MILLIMETERS NOMINAL


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