5305-00-730-5520 SCREW,MACHINE Index 1010-00-730-5525 LEVER,BREECHBLOCK,COCKING

National Stock Number:
1010-00-730-5521

Federal Supply Class:
1010

National Item Identification Number:
007305521

Description:
SEAR

Detail:
AN ITEM SO DESIGNED AS TO RETAIN THE FIRING MECHANISM OF A GUN IN THE COCKED POSITION AND RELEASE IT BY A ROTATING OR SLIDING MOTION.


Manufacturer Information:
730552119206ARMY, UNITED STATES DEPARTMENT OF THE BUSINESS DEVELOPMENT DBA WATERVLIET ARSENAL


Techincal Specification:
FSC APPLICATION DATARIFLE,RECOILLESS,57 MM
OVERALL LENGTH2.792 INCHES NOMINAL
OVERALL WIDTH0.400 INCHES MINIMUM AND 0.410 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 COMPOSITION 4150 FED SPEC SINGLE MATERIAL RESPONSE
MATERIALSTEEL COMP 4150
MECHANISM HELDFIRING PIN
METALLIC HARDNESS RATING45.0 MINIMUM ROCKWELL C AND 50.0 MAXIMUM ROCKWELL C
WEAPON MODEL NUMBERM18A1
WEAPON SIZE DESIGNATION57 MILLIMETER
SURFACE TREATMENTPHOSPHATE


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