3110-00-043-0519 BEARING,BALL,ANNULAR Index 5310-00-043-0521 WASHER,FLAT

National Stock Number:
5310-00-043-0520

Federal Supply Class:
5310

National Item Identification Number:
000430520

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.)


Manufacturer Information:
10116508A486GNIMIKKEISTOKESKUS NCB FINLAND
492-02792739AMPEX SYSTEMS CORP
5310000430520A00AME.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE
5310000430520SCY13E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES FORCES ARMEE
681-376114310AULT INC
853730118876U S ARMY AVIATION AND MISSILE COMMAND
911C208-683843SUNDSTRAND CORP ELECTRIC POWER SYSTEMS DIV
911C208-699167HAMILTON SUNDSTRAND CORPORATION
941618424617GENERAL MOTORS CORP
AN345-41688044AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE
FF-N-83681348FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
M235650-3252D9182ZF INDUSTRIEANTRIEBE WITTEN GMBH
MS20341-416S96906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MS35650-325296906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SM-C-208850-680063US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR
XX004-7791H2229RDM TECHNOLOGY B.V.


Techincal Specification:
BEARING SURFACE TYPECHAMFERED
HARDNESS RATING80.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE0.250 INCHES
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 13 STYLE AND A GRADE
NUT HEIGHT0.178 INCHES MINIMUM AND 0.193 INCHES MAXIMUM
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.423 INCHES MINIMUM AND 0.437 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH28
THREAD SERIESUNF


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