NSN 3940-01-491-0507

Part Details | TACKLE BLOCK

3940-01-491-0507 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: M903268L, 8004328, 5716580814 ITEM 21, 571-6580814 ITEM 21, 3940-01-491-0507, 01-491-0507, 3940014910507, 014910507

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
39OCT 11, 200101-491-050706117 ( BLOCK, TACKLE )
REFERENCE DRAWINGS & PICTURES

DROP LINK

OBLONG SWIVEL EYE AND SHACKLE

OVAL PATTERN

Cross Reference | NSN 3940-01-491-0507
Part Number Cage Code Manufacturer
M903268L76257CROSBY GROUP INC THEMCKISSICK PLANT DIV
800432876257CROSBY GROUP INC THEMCKISSICK PLANT DIV
571-6580814 ITEM 2153711NAVAL SEA SYSTEMS COMMAND
Technical Data | NSN 3940-01-491-0507
Characteristic Specifications
STYLE DESIGNATOR4 OVAL PATTERN
SHELL LENGTH12.310 INCHES NOMINAL
BLOCK TYPE SNATCH
LOCKING STYLE DROP LINK
MATERIAL AND LOCATION STEEL OVERALL
SURFACE TREATMENT AND LOCATION GALVANIZED OVERALL
SHEAVE QUANTITY1
BEARING TYPE PLAIN
SHEAVE BEARING LUBRICATION METHOD SELF-LUBRICATED
TACKLE LOCKING DEVICE NOT INCLUDED
BECKET TYPE ROUND EYE
BECKET QUANTITY1
ATTACHMENT STYLE8 OBLONG SWIVEL EYE AND SHACKLE
MAXIMUM LOAD RATING20000.0 POUNDS
END ITEM IDENTIFICATIONCARGO BOOM