2510-12-177-7669 COVER PLATE,SPECIAL Index 5310-12-177-7671 WASHER,FLAT

National Stock Number:
5310-12-177-7670

Federal Supply Class:
5310

National Item Identification Number:
121777670

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:
40 0038 590C6134ZEPPELIN SYSTEMS GMBH
40 0038 590D0235ZEPPELIN MOBILE SYSTEME GMBH
DIN988-S16X22D8286DIN DEUTSCHES INSTITUT FUER NORMUNGEV
S16X22DIN988D8286DIN DEUTSCHES INSTITUT FUER NORMUNGEV


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING44,0 ROCKWELL C MINIMUM AND 49,0 ROCKWELL C MAXIMUM
HOLE DIAMETER15,77 MILLIMETERS MINIMUM AND 15,95 MILLIMETERS MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONDIN17222 ASSN STD SINGLE MATERIAL RESPONSE
MATERIALSTEEL
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER21,725 MILLIMETERS MINIMUM AND 22,935 MILLIMETERS MAXIMUM
TEST DATA DOCUMENTD8286-DIN988/MAR90/ STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
THICKNESS1,45 MILLIMETERS MINIMUM AND 1,50 MILLIMETERS MAXIMUM


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