5310-01-557-0636 WASHER,LOCK Index 5310-01-557-6806 WASHER,FLAT

National Stock Number:
5310-01-556-6643

Federal Supply Class:
5310

National Item Identification Number:
015566643

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:
1002630061C19MIL-COTS CORPORATION
12759-005810Y3H3FASTENAL COMPANY
402180Y3H3FASTENAL COMPANY
5320000005-00338X5ND DEFENSE LLC
12KP18045152OSHKOSH CORP
12KP18075Q65OSHKOSH DEFENSE LLC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING140.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 250.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM
HOLE DIAMETER4.30 MILLIMETERS MINIMUM AND 4.48 MILLIMETERS MAXIMUM
MATERIALSTEEL OVERALL
OVERALL DIAMETER9.0 MILLIMETERS NOMINAL
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESMATERIAL: LOW CARBON STEEL
THICKNESS0.8 MILLIMETERS NOMINAL


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