NSN 5310-01-143-1770

Part Details | FLAT WASHER

5310-01-143-1770 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.

Alternate Parts: 6510311039102, 65103-11039-102, 6510311039102, 65103-11039-102, 6510311039102, 65103-11039-102, 5310-01-143-1770, 01-143-1770, 5310011431770, 011431770

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53NOV 28, 198201-143-177013393 ( WASHER, FLAT )
REFERENCE DRAWINGS & PICTURES

RECTANGULAR

ROUND

ROUND W/FLATS

Cross Reference | NSN 5310-01-143-1770
Part Number Cage Code Manufacturer
65103-11039-10254878ROTAIR INDUSTRIES, INC.
65103-11039-10278286SIKORSKY AIRCRAFT CORPORATIONDBA SIKORSKY
65103-11039-10265780TEK PRECISION CO., LTD.
Technical Data | NSN 5310-01-143-1770
Characteristic Specifications
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
HOLE DIAMETER2.842 INCHES MINIMUM AND 2.852 INCHES MAXIMUM
PERIPHERAL SHAPE STYLE ROUND
OVERALL DIAMETER3.250 INCHES NOMINAL
CENTER HOLE SHAPE STYLE ROUND W/FLATS
HOLE WIDTH ACROSS FLATS2.628 INCHES MINIMUM AND 2.630 INCHES MAXIMUM
CROSS-SECTIONAL SHAPE STYLE RECTANGULAR
THICKNESS0.115 INCHES MINIMUM AND 0.120 INCHES MAXIMUM