Drilling Product Catalog

DRILLING | T-A Pro® High Penetration Replaceable Insert Drilling System

T-A Pro Form Inserts Countersink Specs

T-A Pro Drill Form Inserts TA C

F

0 -

90DEG Form Type

Insert Substrate

Style

Series

C = Carbide

F = Form Insert

Y Z 0 1 2 3

82DEG = 82° form angle 90DEG = 90° form angle 100DEG = 100° form angle

X = High-speed steel (cobalt)

A25

Metric Screw Countersinks Insert

Metric Screw Sizes

D 2 - D 1

A 1 (Form) Series

mm

inch

M3 M4 M5 M6 M8 M10 M12 M14 M16 M20 M24

Y Z 0

3.05 - 11.09 0.1200 - 0.4368 3.05 - 12.69 0.1200 - 0.4998

6.22 - 17.64 0.2450 - 0.6946 1 10.29 - 24.37 0.4050 - 0.9596 2 12.70 - 35.04 0.5000 - 1.3797 3 15.88 - 47.80 0.6250 - 1.8820

90°

Imperial Screw Countersinks Insert

Imperial Screw Sizes

D 2 - D 1

A 1 (Form) Series

mm

inch

#6 #8 #10 #12 1/4" 5/16" 3/8" 7/16" 1/2" 9/16" 5/8" 3/4" 7/8"

Y Z 0 1 Y Z 0 1

3.43 - 11.09 0.1350 - 0.4368 3.43 - 12.69 0.1350 - 0.4998 6.22 - 17.64 0.2450 - 0.6946

82°

9.53 - 24.37 0.3750 - 0.9596 2 14.22 - 35.04 0.5600 - 1.3797 3 15.88 - 47.80 0.6250 - 1.8820

3.30 - 11.09 0.1300 - 0.4368 3.30 - 12.69 0.1300 - 0.4998 6.10 - 17.64 0.2400 - 0.6946

100°

8.89 - 24.37 0.3500 - 0.9596 2 12.70 - 35.04 0.5000 - 1.3797 3 15.88 - 47.80 0.6250 - 1.8820

A25: 47

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