National Item Identification Number
01-421-0855
014210855
5305-01-421-0855
5305014210855
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)
81346
AMERICAN SOC FOR TSTG & MTLS
DBA ASTM INTERNATIONAL
100 BARR HARBOR DR
WEST CONSHOHOCKEN
PA
19428
610-832-9500
80204
90099
NORTHROP GRUMMAN SYSTEMS CORPORATION
DBA NORTHROP GRUMMAN MARINE SYSTEMS
401 E HENDY AVE MS 33-3
SUNNYVALE
CA
94086
408-735-4188
90099
NORTHROP GRUMMAN SYSTEMS CORPORATION
DBA NORTHROP GRUMMAN MARINE SYSTEMS
401 E HENDY AVE MS 33-3
SUNNYVALE
CA
94086
408-735-4188
Reference Numbers (Part Numbers)
A449-0
B18.2.1
1135E18FN103
522C506-020
Required Categories
THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
FAS
Required Description
UNC
0.625 INCHES
11
5.000 INCHES NOMINAL