NSN 3940-01-491-0456

Part Details | TACKLE BLOCK

3940-01-491-0456 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: M903268E, 8004287, 5716580814 ITEM 18, 571-6580814 ITEM 18, 3940-01-491-0456, 01-491-0456, 3940014910456, 014910456

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
39OCT 11, 200101-491-045606117 ( BLOCK, TACKLE )
REFERENCE DRAWINGS & PICTURES

OBLONG SWIVEL EYE AND SHACKLE

ROUND PATTERN

Cross Reference | NSN 3940-01-491-0456
Part Number Cage Code Manufacturer
M903268E76257CROSBY GROUP INC THEMCKISSICK PLANT DIV
800428776257CROSBY GROUP INC THEMCKISSICK PLANT DIV
571-6580814 ITEM 1853711NAVAL SEA SYSTEMS COMMAND
Technical Data | NSN 3940-01-491-0456
Characteristic Specifications
STYLE DESIGNATOR ROUND PATTERN
SHELL LENGTH31.120 INCHES NOMINAL
SHEAVE OUTSIDE DIAMETER18.000 INCHES NOMINAL
BLOCK TYPE REGULAR
MATERIAL AND LOCATION STEEL OVERALL
SURFACE TREATMENT AND LOCATION GALVANIZED OVERALL
SHEAVE QUANTITY1
BEARING TYPE ROLLER
SHEAVE BEARING LUBRICATION METHOD SELF-LUBRICATED
TACKLE ACCOMMODATED TYPE WIRE ROPE
TACKLE LOCKING DEVICE NOT INCLUDED
BECKET TYPE ROUND EYE
BECKET QUANTITY1
ATTACHMENT STYLE8 OBLONG SWIVEL EYE AND SHACKLE
MAXIMUM LOAD RATING28000.0 POUNDS
SPECIAL FEATURESPROOF TEST TO 28 TONS
END ITEM IDENTIFICATIONCARGO BOOM