5305-00-855-3104 SCREW,EXTERNALLY RELIEVED BODY Index 5905-00-855-3107 RESISTOR,FIXED,WIRE WOUND

National Stock Number:
5310-00-855-3105

Federal Supply Class:
5310

National Item Identification Number:
008553105

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:
54971573030HAMILTON SUNDSTRAND CORPORATION


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING78.0 ROCKWELL B MINIMUM
HOLE DIAMETER0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM
OVERALL DIAMETER1.730 INCHES MINIMUM AND 1.740 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 2014 OVERALL
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESOUTSIDE EDGES CHAMFERED 45 DEG 0.040 TO 0.050
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTOXIDE FILM OVERALL
THICKNESS0.118 INCHES MINIMUM AND 0.122 INCHES MAXIMUM


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