• THREAD SERIES DESIGNATOR : UNC
  • NOMINAL THREAD DIAMETER : 0.164 INCHES
  • THREAD QUANTITY PER INCH : 32
  • THREAD CLASS : 2A​​​​​​​
  • THREAD DIRECTION : RIGHT-HAND​​​​​​​
  • THREAD LENGTH : 0.532 INCHES MINIMUM AND 0.625 INCHES MAXIMUM​​​​​​​
  • FASTENER LENGTH : 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM​​​​​​​
  • SCREW MATERIAL : STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 314 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL COMP 384 OR STEEL COMP 385​​​​​​​
  • SCREW MATERIAL DOCUMENT AND CLASSIFICATION : 66 FED STD ALL MATERIAL RESPONSES​​​​​​​ 
  • SCREW SURFACE TREATMENT : ZINC AND CHROMATE​​​​​​​
  • SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION : ASTM B633 TYPE 2 CLASS FE/ZN 13 ASSN STD SINGLE TREATMENT RESPONSE​​​​​​​
  • MINIMUM TENSILE STRENGTH : 160000 POUNDS PER SQUARE INCH​​​​​​​
  • HEAD STYLE : A23 PAN​​​​​​​
  • HEAD DIAMETER : 0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM​​​​​​​
  • HEAD HEIGHT : 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM​​​​​​​
  • INTERNAL DRIVE STYLE : B1 CROSS RECESS TYPE 1
  • NONDEFINITIVE SPEC/STD DATA : 3 TYPE AND 9C STYLE​​​​​​​
  • DEPARTURE FROM CITED DOCUMENT : AS MODIFIED BY SURFACE TREATMENT​​​​​​​
  • MANUFACTURERS CODE : 81348​​​​​​​
  • NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE : FF-S-92​​​​​​​

Machine Screw

  • length: 3/8, thread: 8-24, pan head machine screw, cadmium plated carbon steel, coarse thread