NSN 3940-01-492-7931

Part Details | TACKLE BLOCK

3940-01-492-7931 A mechanical device, consisting of a pulley(s) or sheave(s) encased in a shell or frame which may be provided with a means such as a hook, eye, strap, screw, etc., by which it may be attached to an object. It is used to change direction of a running rope and/or to gain a mechanical advantage.

Alternate Parts: 5816726890AY99, 581-6726890-AY99, 14901335, 3940-01-492-7931, 01-492-7931, 3940014927931, 014927931

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
39DEC 12, 200101-492-793106117 ( BLOCK, TACKLE )
REFERENCE DRAWINGS & PICTURES

OVAL PATTERN

Cross Reference | NSN 3940-01-492-7931
Part Number Cage Code Manufacturer
581-6726890-AY9953711NAVAL SEA SYSTEMS COMMAND
1490133553711NAVAL SEA SYSTEMS COMMAND
Technical Data | NSN 3940-01-492-7931
Characteristic Specifications
STYLE DESIGNATOR4 OVAL PATTERN
SHELL LENGTH61.750 INCHES NOMINAL
SHEAVE OUTSIDE DIAMETER27.500 INCHES NOMINAL
SECOND SHEAVE OUTSIDE DIAMETER27.500 INCHES NOMINAL
CENTER PIN DIAMETER3.750 INCHES NOMINAL
SECOND CENTER PIN DIAMETER3.750 INCHES NOMINAL
MATERIAL AND LOCATION STEEL, CORROSION RESISTING OVERALL
SHEAVE QUANTITY2
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN