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		                        | National Stock Number:
 5310-00-275-2021
 
 Federal Supply Class:
 5310
 
 National Item Identification Number:
 002752021
 
 Description:
 NUT,SELF-LOCKING,HEXAGON
 
 Detail:
 A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes NUT (1), SELF-LOCKING, CAP.
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 Manufacturer Information:
 
 | 8526159 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |  | AN3640428A | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE |  | AN364D428A | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE |  | MS20364D428A | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | 
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 Techincal Specification:
 
 | THREAD DIRECTION | RIGHT-HAND |  | NUT STYLE | HEXAGON |  | LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |  | THREAD SERIES | UNF |  | NOMINAL THREAD SIZE | 0.250 INCHES |  | THREAD QUANTITY PER INCH | 28 |  | THREAD CLASS | 3B |  | SURFACE TREATMENT | ANODIZE NUT |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-A-696 FED SPEC SINGLE TREATMENT RESPONSE NUT |  | NUT HEIGHT | 0.187 INCHES MINIMUM AND |  |  | 0.219 INCHES MAXIMUM |  | WIDTH ACROSS FLATS | 0.428 INCHES MINIMUM AND |  |  | 0.440 INCHES MAXIMUM |  | TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |  | SPEC/STD CONTROLLING DATA |  |  | MANUFACTURERS CODE | 96906 |  | DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS20364D428A | 
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