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National Stock Number: 4730-00-466-7491
Federal Supply Class: 4730
National Item Identification Number: 004667491
Description: LOCKNUT,TUBE FITTING
Detail: AN ITEM WITH INTERNAL MACHINE THREADS DESIGNED TO FIT THE EXTERNAL MACHINE THREADS OF A TUBE FITTING. IT HAS FLAT FACES, ONE OF WHICH HAS A COUNTERBORED RECESS TO ACCOMMODATE PACKING, PACKING OR SEALING RING(S), GASKET(S), AND THE LIKE. THE ITEM, WHEN INSTALLED, PROVIDES A METHOD OF LOCKING AND SEALING THE CONNECTION. SEE ALSO LOCKNUT, PIPE; NUT (1), TUBE COUPLING AND NUT (1), PLAIN, HEXAGON.
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Manufacturer Information:
MIL-DTL-18866 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | MS51860-8 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
PACKING RECESS DEPTH | 1.067 INCHES NOMINAL | PACKING RECESS DIAMETER | 1.250 INCHES NOMINAL | MATERIAL | STEEL OVERALL | NOMINAL TUBE OUTSIDE DIAMETER | 0.750 INCHES | NOMINAL THREAD SIZE | 1.0625 INCHES | NUT STYLE | TUBE FITTING LOCKNUT | WIDTH ACROSS FLATS | 1.250 INCHES NOMINAL | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | SURFACE TREATMENT | CADMIUM OVERALL | THREAD CLASS | 2B | THREAD DIRECTION | RIGHT-HAND | THREAD SERIES | UN | THREAD QUANTITY PER INCH | 12 |
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