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) |
---|---|---|---|
39 | SEP 29, 2014 | 01-631-8597 | 06117 ( BLOCK, TACKLE ) |
REFERENCE DRAWINGS & PICTURES
OVAL PATTERN

Cross Reference | NSN 3940-01-631-8597
Part Number | Cage Code | Manufacturer |
---|---|---|
29902100 | 8D492 | LEWMAR, INC. |
Technical Data | NSN 3940-01-631-8597
Characteristic | Specifications |
---|---|
STYLE DESIGNATOR | OVAL PATTERN |
SHELL LENGTH | 5.875 INCHES NOMINAL |
SHEAVE OUTSIDE DIAMETER | 105.0 MILLIMETERS NOMINAL |
BLOCK TYPE | REGULAR |
SHEAVE QUANTITY | 1 |
MAXIMUM TACKLE DIAMETER ACCOMMODATED | 0.3125 INCHES |
TACKLE LOCKING DEVICE | NOT INCLUDED |
SPECIAL FEATURES | SAFE WORKING LOAD IS 8817.0 LBS;BREAKING LOAD IS 17,637.0 LBS |
END ITEM IDENTIFICATION | BOAT, DIVE SU |
PART NAME ASSIGNED BY CONTROLLING AGENCY | FIXED HALYARD |