National Item Identification Number
01-250-0521
012500521
5305-01-250-0521
5305012500521
National Stock Number
Item Name
SETSCREW
Federal Supply Class
5305
Description
An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. A locking feature may be incorporated in the design of the head or threads.
Commercial and Government Entity Code (Supplier Data)
56878
17077
LOCKHEED MARTIN CORPORATION
DBA LOCKHEED MARTIN SPACE SYSTEMS
1111 LOCKHEED MARTIN WAY
SUNNYVALE
CA
94089
303-971-7384
Reference Numbers (Part Numbers)
28708L-4C-4
28708L4C4
Required Categories
THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR
Required Description
UNRC
0.250 INCHES
20
3A
RIGHT-HAND
0.240 INCHES MINIMUM AND
0.260 INCHES M