NSN 5305-01-399-6586

Part Details | HEXAGON HEAD CAP SCREW

5305-01-399-6586 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: 51618UNC2A X 34"LG GR316, 5/16-18UNC-2A X 3/4"LG GR316, 0.31218UNC2A0.750 GR316, M122RN5C212SDNN, MILS1222, MIL-S-1222, MILDTL1222, MIL-DTL-1222, 5305-01-399-6586, 01-399-6586, 5305013996586, 013996586

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53DEC 01, 199401-399-658618257 ( SCREW, CAP, HEXAGON HEAD )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5305-01-399-6586
Part Number Cage Code Manufacturer
5/16-18UNC-2A X 3/4"LG GR31680204AMERICAN NATIONAL STANDARDSINSTITUTE, INCORPORATED
0.31218UNC2A0.750 GR31680204AMERICAN NATIONAL STANDARDSINSTITUTE, INCORPORATED
M122RN5C212SDNN81349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
MIL-S-122281349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
MIL-DTL-122281349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
Technical Data | NSN 5305-01-399-6586
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
THREAD LENGTH0.750 INCHES NOMINAL
FASTENER LENGTH0.750 INCHES NOMINAL
HEAD STYLE HEXAGON
THREAD DIRECTION RIGHT-HAND
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH18
THREAD CLASS2A
HEAD HEIGHT0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
NONDEFINITIVE SPEC/STD DATA1 TYPE