National Item Identification Number
00-202-2179
002022179
3940-00-202-2179
3940002022179
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)
368SIZE7AND251SIZE2
Required Categories
STYLE DESIGNATOR
SHELL LENGTH
SHEAVE OUTSIDE DIAMETER
CENTER PIN DIAMETER
BL
Required Description
21 HALYARD PATTERN
2.250 INCHES NOMINAL
1.500 INCHES NOMINAL
0.188 INCHES NOM