National Item Identification Number

01-290-1321
012901321
4730-01-290-1321
4730012901321

National Stock Number

Item Name

LOCKNUT,TUBE FITTING

Federal Supply Class

4730

Description

An item with internal machine threads designed to fit the external machine threads of a tube fitting. It has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing ring(s), gasket(s), and the like. The item, when installed, provides a method of locking and sealing the connection. See also LOCKNUT, PIPE; NUT (1), TUBE COUPLING and NUT (1), PLAIN, HEXAGON.

Commercial and Government Entity Code (Supplier Data)

---

Reference Numbers (Part Numbers)

398-11000-72

Required Categories

THREAD SERIES
NOMINAL THREAD SIZE
THREAD DIRECTION

Required Description

UNF
0.625 INCHES
RIGHT-HAND