MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | 96906 |
THREAD CLASS | 3B |
THREAD DIRECTION | RIGHT-HAND |
NUT STYLE | HEXAGON |
NUT HEIGHT | 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM |
WIDTH ACROSS FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
THREAD SERIES | UNJF |
THREAD QUANTITY PER INCH | 24 |
NOMINAL THREAD SIZE | 0.312 INCHES |
COUNTERSINK ANGLE | 90.0 DEGREES NOMINAL NUT |
BEARING SURFACE TYPE | CHAMFERED |
BEARING SURFACE FINISH | 63.0 MICROINCHES |
MATERIAL | IRON ALLOY 660 OVERALL |
MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
THREAD CLASS | 3B |
THREAD DIRECTION | RIGHT-HAND |
NUT STYLE | HEXAGON |
NUT HEIGHT | 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM |
WIDTH ACROSS FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
THREAD SERIES | UNJF |
THREAD QUANTITY PER INCH | 24 |
NOMINAL THREAD SIZE | 0.312 INCHES |
COUNTERSINK ANGLE | 90.0 DEGREES NOMINAL NUT |
BEARING SURFACE TYPE | CHAMFERED |
BEARING SURFACE FINISH | 63.0 MICROINCHES |
MATERIAL | IRON ALLOY 660 OVERALL |
MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
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.) |