NSN 3940-00-891-2172

Part Details | TACKLE BLOCK

3940-00-891-2172 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: 341N400501105, 341N400-501-105, 3940-00-891-2172, 00-891-2172, 3940008912172, 008912172

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
39JAN 13, 196700-891-217206117 ( BLOCK, TACKLE )
REFERENCE DRAWINGS & PICTURES

OVAL PATTERN

Cross Reference | NSN 3940-00-891-2172
Part Number Cage Code Manufacturer
341N400-501-10599696LOCKHEED MARTIN CORPORATIONDIV LOCKHEED MARTIN SYSTEMS & GLOBAL
Technical Data | NSN 3940-00-891-2172
Characteristic Specifications
STYLE DESIGNATOR5 OVAL PATTERN
SHEAVE OUTSIDE DIAMETER10.000 INCHES NOMINAL
CENTER PIN DIAMETER0.874 INCHES MINIMUM AND 0.885 INCHES MAXIMUM
BLOCK TYPE REGULAR
MATERIAL AND LOCATION STEEL, FED STD 66, AISI/SAE 3140 CENTER PIN
SHEAVE QUANTITY1
MAXIMUM TACKLE DIAMETER ACCOMMODATED1.000 INCHES
TACKLE LOCKING DEVICE NOT INCLUDED
ANTITOPPLING DEVICE NOT INCLUDED
SPECIAL FEATURESASSEMBLY CONSISTS (1)341N400-501-5; AND BASIC REFERENCE NUMBER