NSN 3940-01-631-8597

Part Details | TACKLE BLOCK

3940-01-631-8597 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: 29902100, 3940-01-631-8597, 01-631-8597, 3940016318597, 016318597

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
39SEP 29, 201401-631-859706117 ( BLOCK, TACKLE )
REFERENCE DRAWINGS & PICTURES

OVAL PATTERN

Cross Reference | NSN 3940-01-631-8597
Part Number Cage Code Manufacturer
299021008D492LEWMAR, INC.
Technical Data | NSN 3940-01-631-8597
Characteristic Specifications
STYLE DESIGNATOR OVAL PATTERN
SHELL LENGTH5.875 INCHES NOMINAL
SHEAVE OUTSIDE DIAMETER105.0 MILLIMETERS NOMINAL
BLOCK TYPE REGULAR
SHEAVE QUANTITY1
MAXIMUM TACKLE DIAMETER ACCOMMODATED0.3125 INCHES
TACKLE LOCKING DEVICE NOT INCLUDED
SPECIAL FEATURESSAFE WORKING LOAD IS 8817.0 LBS;BREAKING LOAD IS 17,637.0 LBS
END ITEM IDENTIFICATIONBOAT, DIVE SU
PART NAME ASSIGNED BY CONTROLLING AGENCYFIXED HALYARD