National Item Identification Number

01-044-7103
010447103
4730-01-044-7103
4730010447103

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)

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Reference Numbers (Part Numbers)

MS51860-13

Required Categories

THREAD SERIES
NOMINAL THREAD SIZE
THREAD QUANTITY PER INCH
THREAD CLASS
THRE

Required Description

UN
2.500 INCHES
12
2B
RIGHT-HAND
2.750 INCHES NOMINAL
2.625 INCHES NOMINAL