National Item Identification Number
01-147-6455
011476455
3950-01-147-6455
3950011476455
National Stock Number
Item Name
DERRICK,STIFF LEG
Federal Supply Class
3950
Description
A derrick consisting of a spar, mast, or A-frame set on end and usually supported at the bottom by two horizontal spars or sills, with inclined beams running from end of sills to mast to form a triangle. A boom is fastened to the lower end of the mast or of the sills. The boom is so arranged that it may be raised or lowered at different angles or swung horizontally. The hoisting unit is generally not an integral part of this device but may be located any distance from the derrick.
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)
125-D
Required Categories
Required Description