NSN 5340-00-725-5379

Part Details | HELICAL COMPRESSION SPRING SEAT

5340-00-725-5379 A circular item, usually having a flat or grooved flange, boss(es), and/or counterbore designed to accommodate the end of the spring. It is used to position the spring, but does not encase the spring or restrain lateral motion. It may be used in conjunction with a RETAINER, HELICAL COMPRESSION SPRING. Excludes WASHER (1), (as modified); SEAT, BALL SOCKET and HOLDER, SPRING. See also ROTOR, ENGINE POPPET VALVE.

Alternate Parts: 11578057, 5340-00-725-5379, 00-725-5379, 5340007255379, 007255379

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53FEB 14, 196800-725-537924328 ( SEAT, HELICAL COMPRESSION SPRING )
REFERENCE DRAWINGS & PICTURES

SEAT

Cross Reference | NSN 5340-00-725-5379
Part Number Cage Code Manufacturer
1157805719206ARMY, UNITED STATES DEPARTMENT OFTHE
Technical Data | NSN 5340-00-725-5379
Characteristic Specifications
MATERIAL STEEL COMP 1345H
MATERIAL DOCUMENT AND CLASSIFICATIONAFED STD 66$JGAAISI 1345H$JGASAE 1345H 2ND MATERIAL RESPONSE
MATERIAL HARDNESS RATINGRCB30.0 ROCKWELL C MAXIMUM AND 35.0 ROCKWELL C MAXIMUM
STYLE DESIGNATOR5 SEAT
OVERALL HEIGHT3.4800 INCHES NOMINAL
DISTANCE FROM END TO FIRST STEP2.0420 INCHES NOMINAL
FIRST STEP LENGTH0.3800 INCHES NOMINAL
SECOND STEP DIAMETER2.9980 INCHES NOMINAL
COUNTERBORE LENGTH2.6050 INCHES NOMINAL
SECOND COUNTERBORE LENGTH1.0580 INCHES NOMINAL
SECOND COUNTERBORE DIAMETER2.4370 INCHES NOMINAL
DESIGN TYPE SOLID
SPECIAL FEATURESINSIDE LENGTH 1.5000 IN;INSIDE WIDTH 1.3200 IN;USED ON M109 HOWITZER FAMILY