ST

ST1221JD-A標準直徑氣動工具專用刀具

ST Drill (ST1221JD-A Standard)

background
刀具-航太專用ST1221JD-A標準直徑氣動工具專用刀具
  • 產品標準：符合NAS波音航空維修技術標準刀具
  • 產品用途：當航空材料鑽孔完成後、需要用氣動工具做倒角擴孔、以便讓航空螺絲 很精準與航空材料密切結合、不會產生風阻、減少航空事故。
  • 產品材質： in - HSS
unit:in
ST1221JD-A HSS Piloted 100° Countersink
Order Code Flute Pilot
DIA.		 Body
DIA.		 Pilot
Length		 Body
Length		 Cutter
Path
Angle		 Threded
Shank		 Threded
Length		 THD.
Relief		 Locating
Angle
Z A B C F α1 THD D(in) -- α2
ST1221JD-A-065 3 0.0650 0.250 0.093 0.75 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-096 3 0.0960 0.250 0.108 0.75 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-126 3 0.1260 0.500 0.123 0.75 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-145 3 0.1450 0.500 0.140 0.75 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-158 3 0.1580 0.500 0.140 0.75 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-190 3 0.1900 0.500 0.155 0.75 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-203 3 0.2030 0.500 0.162 0.75 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-224 3 0.2240 0.500 0.170 0.75 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-238 3 0.2380 0.500 0.170 0.75 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-252 3 0.2520 0.625 0.188 0.75 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-266 3 0.2660 0.625 0.193 0.75 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-285 3 0.2850 0.625 0.204 0.75 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-314 3 0.3140 0.750 0.217 0.95 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-346 3 0.3460 0.750 0.233 0.95 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-375 3 0.3750 0.750 0.248 1.15 100° 1/4-28 0.312 0.03 120°
ST1221JD-A-411 3 0.4110 0.750 0.266 1.15 100° 1/4-28 0.312 0.03 120°
unit:inch
ST1221JD-A HSS Piloted 100° Countersink
Axial Rake Angle 5°
Tip Radial Rake Angle 4°
Prinary Clearance Angle 8°
Tip Gash Radian 0.01
Body Hole 0.13