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National Stock Number:
5310-01-031-2124
Federal Supply Class:
5310
National Item Identification Number:
010312124
Description:
NUT,PLAIN,HEXAGON
Detail:
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.)
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Manufacturer Information:
| 6440-309 PIECE F121 | 43689 | HUNTINGTON INGALLS INC | | 6440-309 PIECE F121L1 | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG | | MIL-DTL-1222 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | MIL-S-1222 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | MIL-S-1222L1 | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG |
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Techincal Specification:
| BEARING SURFACE TYPE | WASHER FACED | | CRITICALITY CODE JUSTIFICATION | ZZZX | | DEPARTURE FROM CITED DESIGNATOR | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS | | HARDNESS RATING | 24.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD SIZE | 1.250 INCHES | | NONDEFINITIVE SPEC/STD DATA | 3 TYPE AND 4 GRADE | | NUT HEIGHT | 1.187 INCHES MINIMUM AND 1.251 INCHES MAXIMUM | | NUT STYLE | HEXAGON | | WIDTH ACROSS FLATS | 1.938 INCHES MINIMUM AND 2.000 INCHES MAXIMUM | | THREAD CLASS | 2B | | THREAD DIRECTION | RIGHT-HAND | | THREAD SERIES | UNC | | THREAD QUANTITY PER INCH | 7 |
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