5305-00-450-6140 SCREW,CAP,SOCKET HEAD Index 5330-00-450-6143 SEAL,PLAIN ENCASED

National Stock Number:
5310-00-450-6141

Federal Supply Class:
5310

National Item Identification Number:
004506141

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:
10121393A486GNIMIKKEISTOKESKUS NCB FINLAND
4M284-1476301THE BOEING COMPANY
T4M284-1404946STANDARD WIRE & CABLE CO.
T4M284-1410630ANILLO INDUSTRIES LLC
T4M284-1459570TRICO MANUFACTURING INC.
LS9672C1498897LOCKHEED MARTIN CORP


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.884 INCHES MINIMUM AND 0.897 INCHES MAXIMUM
OVERALL DIAMETER1.427 INCHES MINIMUM AND 1.447 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALIRON ALLOY 660 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM


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