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		                        | National Stock Number:
 4730-00-727-8910
 
 Federal Supply Class:
 4730
 
 National Item Identification Number:
 007278910
 
 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:
 
 | 4022527 | 07187 | HONEYWELL INTERNATIONAL INC. |  | 4022527 | 1GF04 | HAYNES ENTERPRISES, INC. |  | 4022527-6 | 07187 | HONEYWELL INTERNATIONAL INC. |  | 903418C1 | 66195 | SOLAR TURBINES INCORPORATED |  | MIL-DTL-18866 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |  | MIL-F-18866 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |  | SS-402-61 | 02570 | SWAGELOK CO |  | SS-402-61 | 3T9T9 | SWAGELOK CO |  | MS51860-533SS | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |  | MS51860-53SS | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | 
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 Techincal Specification:
 
 | THREAD SERIES | UNF |  | NOMINAL THREAD SIZE | 0.438 INCHES |  | THREAD QUANTITY PER INCH | 20 |  | THREAD CLASS | 2B |  | THREAD DIRECTION | RIGHT-HAND |  | MATERIAL | STEEL CORROSION RESISTING OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | 66,300 SERIES FED STD SINGLE MATERIAL RESPONSE OVERALL |  | SURFACE TREATMENT | PASSIVATE OVERALL |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35,TYPE 1 OR 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |  | NUT STYLE | TUBE FITTING LOCKNUT |  | NUT HEIGHT | 0.250 INCHES NOMINAL |  | WIDTH ACROSS FLATS | 0.688 INCHES NOMINAL |  | NOMINAL TUBE OUTSIDE DIAMETER | 0.250 INCHES |  | SPECIFICATION/STANDARD DATA | 96906-MS51860 GOVERNMENT STANDARD AND |  |  | 81349-MIL-F-18866 GOVERNMENT SPECIFICATION |  | SPEC/STD CONTROLLING DATA |  |  | MANUFACTURERS CODE | 81349 |  | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-DTL-18866 |  | MANUFACTURERS CODE | 96906 |  | DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS51860-53SS | 
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