5310-14-439-7939 WASHER,FLAT Index 5305-14-439-8149 SCREW,MACHINE

National Stock Number:
5310-14-439-7940

Federal Supply Class:
5310

National Item Identification Number:
144397940

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:
0242725A00F0555MBDA FRANCE
1501055C00F9073AIRBUS DEFENCE AND SPACE SAS
99152517F8224THALES LAS FRANCE SAS
99160580F6481THALES SA
99161069F6481THALES SA
A03070224F6432LOHR SA
A03070224FAHF7SODEXIM
CS1.000.151F0569SOCIETE ETUDES CONSTRUCTIONSAERONAVALES
E25514B50ZJAPAF0110AFNOR ASSOCIATION FRANCAISE DE NORMALISATION
E25514B50ZTAF0110AFNOR ASSOCIATION FRANCAISE DE NORMALISATION
E25514B50ZTAF1236PREAULT TECHNOLOGIES
E25514B50ZTAPAF0110AFNOR ASSOCIATION FRANCAISE DE NORMALISATION
E25514B50ZTAPAF1236PREAULT TECHNOLOGIES
E25514B50ZTAPAF9450EUROTECH INTERNATIONAL
M5A4NFE25-514F0110AFNOR ASSOCIATION FRANCAISE DE NORMALISATION
RFC00443F1918SOCIETE ETIENNE LACROIX TOUS ARTIFICES
S1ZT050AF0110AFNOR ASSOCIATION FRANCAISE DE NORMALISATION
S1ZT050APAF0110AFNOR ASSOCIATION FRANCAISE DE NORMALISATION


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER5.30 MILLIMETERS MINIMUM AND 5.48 MILLIMETERS MAXIMUM
MATERIALSTEEL COMP 4 OVERALL
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER11.57 MILLIMETERS MINIMUM AND 12.00 MILLIMETERS MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMA-E27 CODE PA MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0L93 MILLIMETERS MINIMUM AND 1.07 MILLIMETERS MAXIMUM


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