NSN 5305-01-284-1387

Part Details | HEXAGON HEAD CAP SCREW

5305-01-284-1387 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. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes BOLT,MACHINE; BOLT,EXTERNALLY RELIEVED BODY; BOLT,INTERNAL WRENCHING; and SCREW,CAP,SOCKET HEAD.

Alternate Parts: 1420UNC2A X 112 IN LG, 1/4-20UNC-2A X 1-1/2 IN LG, 1420UNC2A X 112 IN LG, 1/4-20UNC-2A X 1-1/2 IN LG, MILS1222, MIL-S-1222, MILDTL1222, MIL-DTL-1222, 1226722636 PC25, 122-6722636 PC25, 5305-01-284-1387, 01-284-1387, 5305012841387, 012841387

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53AUG 18, 198801-284-138718257 ( SCREW, CAP, HEXAGON HEAD )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5305-01-284-1387
Part Number Cage Code Manufacturer
1/4-20UNC-2A X 1-1/2 IN LG80204AMERICAN NATIONAL STANDARDSINSTITUTE, INCORPORATED
1/4-20UNC-2A X 1-1/2 IN LG81349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
MIL-S-122281349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
MIL-DTL-122281349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
122-6722636 PC2553711NAVAL SEA SYSTEMS COMMAND
Technical Data | NSN 5305-01-284-1387
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
THREAD LENGTH0.750 INCHES MINIMUM
FASTENER LENGTH1.460 INCHES MINIMUM AND 1.500 INCHES MAXIMUM
HEAD STYLE HEXAGON
THREAD DIRECTION RIGHT-HAND
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS2A
MINIMUM TENSILE STRENGTH120000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH92000 POUNDS PER SQUARE INCH
HEAD HEIGHT0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
NONDEFINITIVE SPEC/STD DATA1 TYPE