National Item Identification Number
00-663-8313
006638313
3940-00-663-8313
3940006638313
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)
Required Categories
STYLE DESIGNATOR
SHELL LENGTH
SHEAVE OUTSIDE DIAMETER
CENTER PIN DIAMETER
BL
Required Description
12 HOISTER PATTERN
ANY ACCEPTABLE
18.000 INCHES NOMINAL
2.250 INCHES NOMINAL;