National Item Identification Number
00-638-8946
006388946
5305-00-638-8946
5305006388946
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)
NSN (National Stock Number) 5305-00-638-8946, 5305006388946 NIIN (National Identification Number) 00-638-8946, 006388946
Part Numbers (Reference Numbers)
FFS85TYPE2STYLE10PGRADEB
MS35304-87
Required Categories
THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR
Required Description
UNF
0.438 INCHES
20
2A
RIGHT-HAND
1.125 INCHES MINIMUM
1.250 INCHES NOMINA