National Item Identification Number
01-121-2712
011212712
5305-01-121-2712
5305011212712
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)
Reference Numbers (Part Numbers)
NAS1351-4-56P
Required Categories
THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR
Required Description
UNRF
0.250 INCHES
28
3A
RIGHT-HAND
1.000 INCHES MINIMUM
3.440 INCHES MINIM
