National Item Identification Number
01-253-9809
012539809
5305-01-253-9809
5305012539809
National Stock Number
Item Name
SCREW,CAP,HEXAGON HEAD
Federal Supply Class
5305
Description
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD.
Commercial and Government Entity Code (Supplier Data)
16331
LOCKHEED MARTIN CORPORATION
DBA LOCKHEED MARTIN SIMULATION
12506 LAKE UNDERHILL RD
ORLANDO
FL
32825
407-306-1769
Reference Numbers (Part Numbers)
63A136497P4
Required Categories
THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR
Required Description
UNC
0.250 INCHES
20
2A
RIGHT-HAND
1.125 INCHES NOMINAL
1.250 INCHES NOMINA