NSN 5310-00-187-9727

Part Details | RECESSED WASHER

5310-00-187-9727 A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes WASHER, CONCAVE, RETAINER, PACKING, and thrust type washers. See also SPACER, SLEEVE; and SPACER, STEPPED.

Alternate Parts: MS976809, MS9768-09, 10116659, 5310-00-187-9727, 00-187-9727, 5310001879727, 001879727

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53MAR 11, 197300-187-972715933 ( WASHER, RECESSED )
REFERENCE DRAWINGS & PICTURES

SPRING TENSION

Cross Reference | NSN 5310-00-187-9727
Part Number Cage Code Manufacturer
MS9768-0996906MILITARY STANDARDSPROMULGATED BY MILITARY DEPARTMENTS
10116659A486GNIMIKKEISTOKESKUS NCB FINLAND
Technical Data | NSN 5310-00-187-9727
Characteristic Specifications
HARDNESS RATING29.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
STYLE DESIGNATOR8 SPRING TENSION
HOLE DIAMETER0.192 INCHES MINIMUM AND 0.200 INCHES MAXIMUM
OUTSIDE DIAMETER0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM
MATERIAL THICKNESS0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM
TOP RECESS DIAMETER0.236 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
BOTTOM RECESS DIAMETER0.236 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
BOTTOM RECESS ANGLE86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM
TOP RECESS ANGLE86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM