55226 | 7/16″ +1/32 Oversize Counterbore

$77.05

7/16″ 0.468″ Pilot Dia. 0.695″ C’bore Dia. 5″ OAL 1/2″ Shank Dia. 1/32″ Clearance

Stock: 3

SKU: 55226 Categories: , , ,

Product Family Table

  • Integral Pilot, Straight Shank, CNC Precision Ground, Cobalt HSS
  • Micro-smooth CNC precision ground for precision smooth counterboring.
  • Cobalt
  • High performance cutting action due to secondary relief behind cutting edge margin.
  • Optimized helix for chip evacuation – chips flow away from cut without wrapping around tool.

Precision 3-Flute Cap Screw Counterbores

A B C D
Size/Application Product Number Screw Size Pilot Dia C’bore Dia. OAL Shank Dia. Assembly Criteria
#4 Nominal 55200 #4 0.112 0.186 3 5/32 Close Fit
#4 +1/64 O/S 55201 #4 0.127 0.202 3 5/32 1/64″ Clearance
#4 +1/32 O/S 55202 #4 0.143 0.217 3 5/32 1/32″ Clearance
#5 Nominal 55203 #5 0.125 0.205 3 3/16 Close Fit
#5 +1/64 O/S 55204 #5 0.140 0.221 3 3/16 1/64″ Clearance
#5 +1/32 O/S 55205 #5 0.156 0.237 3 3/16 1/32″ Clearance
#6 Nominal 55206 #6 0.138 0.228 3 7/32 Close Fit
#6 +1/64 O/S 55207 #6 0.153 0.244 3 7/32 1/64″ Clearance
#6 +1/32 O/S 55208 #6 0.169 0.260 3 7/32 1/32″ Clearance
#8 Nominal 55209 #8 0.164 0.272 3 1/4 Close Fit
#8 +1/64 O/S 55210 #8 0.179 0.288 3 1/4 1/64″ Clearance
#8 +1/32 O/S 55211 #8 0.195 0.304 3 1/4 1/32″ Clearance
#10 Nominal 55212 #10 0.190 0.314 4.5 9/32 Close Fit
#10 +1/64 O/S 55213 #10 0.205 0.330 4.5 9/32 1/64″ Clearance
#10 +1/32 O/S 55214 #10 0.221 0.346 4.5 9/32 1/32″ Clearance
1/4″ Nominal 55215 1/4 0.250 0.382 4.5 5/16 Close Fit
1/4″ +1/64 O/S 55216 1/4 0.265 0.398 4.5 5/16 1/64″ Clearance
1/4″ +1/32 O/S 55217 1/4 0.281 0.414 4.5 5/16 1/32″ Clearance
5/16″ Nominal 55218 5/16 0.312 0.475 4.5 3/8 Close Fit
5/16″ +1/64 O/S 55219 5/16 0.328 0.491 4.5 3/8 1/64″ Clearance
5/16″ +1/32 O/S 55220 5/16 0.343 0.507 4.5 3/8 1/32″ Clearance
3/8″ Nominal 55221 3/8 0.375 0.572 5 1/2 Close Fit
3/8″ +1/64 O/S 55222 3/8 0.390 0.588 5 1/2 1/64″ Clearance
3/8″ +1/32 O/S 55223 3/8 0.406 0.604 5 1/2 1/32″ Clearance
7/16″ Nominal 55224 7/16 0.437 0.663 5 1/2 Close Fit
7/16″ +1/64 O/S 55225 7/16 0.452 0.679 5 1/2 1/64″ Clearance
7/16″ +1/32 O/S 55226 7/16 0.468 0.695 5 1/2 1/32″ Clearance
1/2″ Nominal 55227 1/2 0.500 0.757 6 1/2 Close Fit
1/2″ +1/64 O/S 55228 1/2 0.515 0.773 6 1/2 1/64″ Clearance
1/2″ +1/32 O/S 55229 1/2 0.531 0.789 6 1/2 1/32″ Clearance
5/8″ Nominal 55230 5/8 0.625 0.945 6 5/8 Close Fit
5/8″ +1/64 O/S 55231 5/8 0.641 0.961 6 5/8 1/64″ Clearance
5/8″ +1/32 O/S 55232 5/8 0.656 0.977 6 5/8 1/32″ Clearance
3/4″ Nominal 55233 3/4 0.766 1.187 7 3/4 Close Fit
3/4″ +1/32 O/S 55234 3/4 0.781 1.203 7 3/4 1/32″ Clearance
7/8″ Nominal 55235 7/8 0.891 1.375 7 7/8 Close Fit
7/8″ +1/32 O/S 55236 7/8 0.906 1.391 7 7/8 1/32″ Clearance
1″ Nominal 55237 1 1.016 1.562 7 1 Close Fit
1″ +1/32 O/S 55238 1 1.032 1.588 7 1 1/32″ Clearance

All dimensions in inches.
Many tools are available with additional coatings.
Please call for quote.

Product Specs

# of Flutes

3

Size

7/16"

Pilot Diameter

0.468"

Counterbore Diameter

0.695"

OAL

5"

Shank Diameter

1/2"

Material

Cobalt

Coating

Uncoated