National Item Identification Number

01-189-3761
011893761
5305-01-189-3761
5305011893761

National Stock Number

Item Name

SCREW,CAP,SOCKET HEAD

Federal Supply Class

5305

Referenced on: http://www.tpub.com/content/aviationmaintandmisc/TM-10-4930-351-14/0815120567.htm
Referenced on: http://fuelpumps.tpub.com//TM-10-4930-247-13P/css/TM-10-4930-247-13P_249.htm
Referenced on: http://fuelpumps.tpub.com//TM-10-4930-247-13P/css/TM-10-4930-247-13P_253.htm
Referenced on: http://fuelpumps.tpub.com//TM-10-4930-247-13P/css/TM-10-4930-247-13P_268.htm
Referenced on: http://fuelpumps.tpub.com//TM-10-4930-247-13P/css/TM-10-4930-247-13P_271.htm
Referenced on: http://fuelpumps.tpub.com//TM-10-4930-247-13P/css/TM-10-4930-247-13P_273.htm
Referenced on: http://www.tpub.com/content/misc_manuals_2/TM-9-2330-381-24P/TM-9-2330-381-24P0296.htm
Referenced on: http://www.tpub.com/content/misc_manuals_2/TM-9-2330-381-24P/TM-9-2330-381-24P0305.htm
Referenced on: http://www.tpub.com/content/misc_manuals_2/TM-9-2330-381-24P/TM-9-2330-381-24P0345.htm

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)

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NSN (National Stock Number) 5305-01-189-3761, 5305011893761 NIIN (National Identification Number) 01-189-3761, 011893761

Part Numbers (Reference Numbers)

FF-S-86
MS16997-78L
MS16997-78L

Required Categories

THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR

Required Description

UNC
0.312 INCHES
18
3A
RIGHT-HAND
0.608 INCHES MINIMUM AND
0.750 INCHES MA