National Item Identification Number
00-189-3425
001893425
3940-00-189-3425
3940001893425
National Stock Number
Item Name
BLOCK,TACKLE
Federal Supply Class
3940
Description
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.
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)
S1801-860431PC1T012-25T027
Required Categories
STYLE DESIGNATOR
SHELL LENGTH
SHEAVE OUTSIDE DIAMETER
CENTER PIN DIAMETER
BL
Required Description
1 OVAL PATTERN
5.000 INCHES NOMINAL
3.438 INCHES NOMINAL
0.438 INCHES NOMINAL