National Item Identification Number
01-387-9220
013879220
3940-01-387-9220
3940013879220
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)
90598
90598
39428
Reference Numbers (Part Numbers)
25039
25039-1
3151T14
Required Categories
STYLE DESIGNATOR
SHELL LENGTH
SHEAVE OUTSIDE DIAMETER
CENTER PIN DIAMETER
BL
Required Description
1 OVAL PATTERN
4.000 INCHES NOMINAL
2.250 INCHES NOMINAL
0.360 INCHES MINIMUM