National Item Identification Number
01-278-1978
012781978
5305-01-278-1978
5305012781978
National Stock Number
Item Name
SCREW,CAP,SOCKET HEAD
Federal Supply Class
5305
Description
An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.
Commercial and Government Entity Code (Supplier Data)
53711
Reference Numbers (Part Numbers)
NAS1190-04P20N
6300797-04P20N
Required Categories
THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR
Required Description
UNJC
0.112 INCHES
40
3A
RIGHT-HAND
1.138 INCHES MINIMUM AND
1.250 INCHES M