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National Stock Number:
5310-00-423-0557
Federal Supply Class:
5310
National Item Identification Number:
004230557
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:
| 13218E0321-291 | 97403 | CECOM LR CENTER |
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Techincal Specification:
| BEARING SURFACE TYPE | WASHER FACED | | FEATURES PROVIDED | CASE-HARDENED | | HARDNESS RATING | 32.0 ROCKWELL C MAXIMUM | | NUT HEIGHT | 0.178 INCHES MINIMUM AND 0.193 INCHES MAXIMUM | | NUT STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE J995,GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD SIZE | 0.250 INCHES | | THREAD CLASS | 2B | | THREAD DIRECTION | RIGHT-HAND | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) | | WIDTH ACROSS FLATS | 0.423 INCHES MINIMUM AND 0.437 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-Z-325,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OR ZINC OVERALL |
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