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National Stock Number:
5310-01-497-2698
Federal Supply Class:
5310
National Item Identification Number:
014972698
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:
| 0.31218UNC2BT1G4NSA/BED | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | 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 |
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Techincal Specification:
| THREAD SERIES | UNC | | NOMINAL THREAD SIZE | 0.312 INCHES | | THREAD QUANTITY PER INCH | 18 | | THREAD CLASS | 2B | | THREAD DIRECTION | RIGHT-HAND | | MATERIAL | STEEL COMP 4140 OR | | STEEL COMP 4140H OR | | STEEL COMP 4142 OR | | STEEL COMP 4142H OR | | STEEL COMP 4145 OR | | STEEL COMP 4145H OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-194, REF 7 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PHOSPHATE IRON OVERALL | | HARDNESS RATING | 24.0 ROCKWELL C MINIMUM AND | | 38.0 ROCKWELL C MAXIMUM | | NUT STYLE | HEXAGON | | NUT HEIGHT | 0.258 INCHES MINIMUM AND | | 0.273 INCHES MAXIMUM | | WIDTH ACROSS FLATS | 0.489 INCHES MINIMUM AND | | 0.500 INCHES MAXIMUM | | BEARING SURFACE TYPE | CHAMFERED OR | | WASHER FACED | | SPECIAL FEATURES | SURFACE TREATMENT SPEC IS DOD-P-16232 | | SPEC/STD CONTROLLING DATA | | | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-DTL-1222 | | MANUFACTURERS CODE | 81349 | | DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | 0.31218UNC2BT1G4NSA/BED |
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