ST

ST1221JD-A标准直径气动工具专用刀具

ST Drill (ST1221JD-A Standard)

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刀具,数控铣刀,-航太专用ST1221JD-A标准直径气动工具专用刀具
  • 产品标准：符合NAS波音航空维修技术标准刀具
  • 产品用途：当航空材料钻孔完成後丶需要用气动工具做倒角扩孔丶以便让航空螺丝 很精准与航空材料密切结合丶不会产生风阻丶减少航空事故。
  • 产品材质： 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-234 3 0.2340 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