NSN 5310-01-031-2124

Part Details | HEXAGON PLAIN NUT

5310-01-031-2124 A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see LOCKNUT, ELECTRICAL CONDUIT. See also LOCKNUT, TUBE FITTING. For items having a thickness (or height) exceeding two times the width across the flats, use POST, ELECTRICAL-MECHANICAL EQUIPMENT. (When height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

Alternate Parts: 6440309 PIECE F121, 6440-309 PIECE F121, MILS1222, MIL-S-1222, MILDTL1222, MIL-DTL-1222, 6440309 PIECE F121L1, 6440-309 PIECE F121L1, MILS1222L1, MIL-S-1222L1, 5310-01-031-2124, 01-031-2124, 5310010312124, 010312124

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53NOV 20, 197601-031-212401857 ( NUT, PLAIN, HEXAGON )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5310-01-031-2124
Part Number Cage Code Manufacturer
6440-309 PIECE F12143689HUNTINGTON INGALLS INCORPORATEDDIV NEWPORT NEWS
MIL-S-122281349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
MIL-DTL-122281349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
6440-309 PIECE F121L103950NAVAL INVENTORY CONTROL POINTMECHANICSBURG
MIL-S-1222L103950NAVAL INVENTORY CONTROL POINTMECHANICSBURG
Technical Data | NSN 5310-01-031-2124
Characteristic Specifications
THREAD SERIES UNC
NOMINAL THREAD SIZE1.250 INCHES
THREAD QUANTITY PER INCH7
THREAD CLASS2B
THREAD DIRECTION RIGHT-HAND
HARDNESS RATING24.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
NUT STYLE HEXAGON
NUT HEIGHT1.187 INCHES MINIMUM AND 1.251 INCHES MAXIMUM
WIDTH ACROSS FLATS1.938 INCHES MINIMUM AND 2.000 INCHES MAXIMUM
BEARING SURFACE TYPE WASHER FACED
NONDEFINITIVE SPEC/STD DATA3 TYPE AND 4 GRADE
DEPARTURE FROM CITED DESIGNATORQUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
CRITICALITY CODE JUSTIFICATIONZZZX