5310-01-125-4248 WASHER,FLAT Index 5310-01-125-4251 WASHER,FLAT

National Stock Number:
5310-01-125-4250

Federal Supply Class:
5310

National Item Identification Number:
011254250

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:
12307434076M6AMZ ALABAMA INC.
1230743419207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
12307434-M06085BAE SYSTEMS LAND & ARMAMENTS L.P.
12307434-M19207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
MATERIALSTEEL COMP 4130 OVERALL
SURFACE TREATMENTCADMIUM OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER2.600 INCHES NOMINAL
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER4.750 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.375 INCHES NOMINAL
HARDNESS RATING28.0 ROCKWELL C MINIMUM AND
32.0 ROCKWELL C MAXIMUM


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