National Item Identification Number
01-329-9728
013299728
5305-01-329-9728
5305013299728
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)
D9182
80204
Reference Numbers (Part Numbers)
FF-S-86
FFS86TYVI1/4-20 UNC2AX1 1/4LG
0.250-20UNC-3AX2.250
Required Categories
THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR
Required Description
UNC
0.250 INCHES
20
3A
RIGHT-HAND
1.000 INCHES MINIMUM AND
1.500 INCHES MA
