• THREAD SERIES : UNC
  • NOMINAL THREAD SIZE : 0.250 INCHES
  • THREAD QUANTITY PER INCH : 20
  • THREAD CLASS : 2B
  • THREAD DIRECTION : RIGHT-HAND​​​​​​​ 
  • MATERIAL : STEEL OVERALL​​​​​​​ 
  • SURFACE TREATMENT : CADMIUM OR ZINC OVERALL
  • SURFACE TREATMENT DOCUMENT AND CLASSIFICATION : QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL​​​​​​​
  • HARDNESS RATING : 121.0 BRINELL STANDARD MINIMUM​​​​​​​
  • NUT STYLE : A12 HEXAGON​​​​​​​
  • NUT HEIGHT : 0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM​​​​​​​
  • WIDTH ACROSS FLATS : 0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM​​​​​​​
  • BEARING SURFACE TYPE : CHAMFERED OR WASHER FACED​​​​​​​
  • TEMP RATING : NOT RATED​​​​​​​
  • NONDEFINITIVE SPEC/STD DATA : 2 TYPE AND 4 STYLE
  • MANUFACTURERS CODE : 81348​​​​​​​
  • NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE : FF-N-836 
  • MANUFACTURERS CODE : 96906
  • DEFINITIVE GOVERNMENT SPEC/STD REFERENCE : MS51967-2​​​​​​​

Plain Hexagon Nut

  • Thread Size: 1/4", Nut Height: 1/4", Head Width: 3/8, steel, coarse thread, cadium yellow