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National Stock Number:
4730-01-343-1771
Federal Supply Class:
4730
National Item Identification Number:
013431771
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 | | MS51860-53Z | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| FABRICATION METHOD | MACHINED | | NUT HEIGHT | 0.250 INCHES NOMINAL | | NUT STYLE | TUBE FITTING LOCKNUT | | PACKING RECESS DIAMETER | 0.625 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD SIZE | 0.438 INCHES | | NOMINAL TUBE OUTSIDE DIAMETER | 0.250 INCHES | | WIDTH ACROSS FLATS | 0.688 INCHES NOMINAL | | SPECIFICATION/STANDARD DATA | 96906-MS51860 GOVERNMENT STANDARD | | SURFACE TREATMENT | ZINC OVERALL | | THREAD CLASS | 2B | | THREAD DIRECTION | RIGHT-HAND | | THREAD SERIES | UNF | | THREAD QUANTITY PER INCH | 20 |
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