Page 29 - Michigan Drill

Parabolic Flute

Jobber Length Drills

High Speed Steel
Parabolic drills are for deep hole drilling at higher feed
rates in aluminum alloys and other low to medium
tensile strength materials. HOLE MAKING
List No. 300PF – High Speed Steel, 135° Split Point
List No. 300PFT – TiN Coated, 135° Split Point

Letter Sizes
Price Each Price Each
Dec. Flute Overall Pkg. H.S. TiN Dec. Flute Overall Pkg. H.S. TiN
Size Size
Equiv. Length Length Qty. 300PF 300PFT Equiv. Length Length Qty. 300PF 300PFT
A .2340 2-5/8 3-7/8 12 4.15 9.47 N .3020 3-1/16 4-3/8 6 6.49 11.81
B .2380 2-3/4 4 12 4.79 10.11 O .3160 3-3/16 4-1/2 6 7.17 12.49
C .2420 2-3/4 4 12 4.79 10.11 P .3230 3-5/16 4-5/8 6 7.62 12.94
D .2460 2-3/4 4 12 5.39 10.71 Q .3320 3-7/16 4-3/4 6 7.89 13.21
E .2500 2-3/4 4 12 3.29 8.61 R .3390 3-7/16 4-3/4 6 7.89 13.21
F .2570 2-7/8 4-1/8 12 4.75 10.07 S .3480 3-1/2 4-7/8 6 9.67 16.15
G .2610 2-7/8 4-1/8 12 4.79 10.11 T .3580 3-1/2 4-7/8 6 9.67 16.15
H .2660 2-7/8 4-1/8 12 5.39 10.64 U .3680 3-5/8 5 6 9.67 18.27
I .2720 2-7/8 4-1/8 6 5.04 10.36 V .3770 3-5/8 5 6 10.68 19.28
J .2770 2-7/8 4-1/8 6 5.39 10.64 W .3860 3-3/4 5-1/8 6 10.68 19.28
K .2810 2-15/16 4-1/4 6 5.39 10.64 X .3970 3-3/4 5-1/8 6 10.68 19.28
L .2900 2-15/16 4-1/4 6 6.12 11.44 Y .4040 3-7/8 5-1/4 6 11.30 19.90
M .2950 3-1/16 4-3/8 6 6.49 11.81 Z .4130 3-7/8 5-1/4 6 12.30 20.90
Metric Sizes
Price Each Price Each
Dec. Flute Overall Pkg. H.S. TiN Dec. Flute Overall Pkg. H.S. TiN
Size Size
Equiv. Length Length Qty. 300PF 300PFT Equiv. Length Length Qty. 300PF 300PFT
1.50 .0591 7/8 1-7/8 12 2.59 3.85 6.80 .2677 2-7/8 4-1/8 12 5.54 11.71
1.90 .0748 1 2 12 2.59 3.85 6.90 .2717 3-3/4 5-1/8 12 6.05 12.22
2.00 .0787 1 2-1/8 12 2.59 3.85 7.00 .2756 2-7/8 4-1/8 12 6.05 12.22
2.15 .0846 1-1/8 2-1/8 12 2.70 3.96 7.10 .2795 2-15/16 4-1/4 6 6.30 13.70
2.30 .0906 1-1/4 2-1/4 12 2.59 3.85 7.50 .2953 2-7/8 4-3/8 6 6.30 13.70
2.40 .0945 1-3/8 2-3/8 12 2.59 3.85 8.00 .3150 3-1/16 4-1/2 6 6.57 13.97
2.45 .0965 1-3/8 2-3/8 12 2.59 3.85 8.10 .3189 3-5/16 4-5/8 6 7.11 14.51
2.50 .0984 1-3/8 2-3/8 12 2.59 4.28 8.20 .3228 3-3/16 4-5/8 6 7.11 14.51
2.70 .1063 1-7/16 2-1/2 12 2.70 4.39 8.50 .3346 3-5/16 4-3/4 6 7.59 14.99
3.00 .1181 1-5/8 2-3/4 12 2.59 4.28 8.60 .3386 3-7/16 4-3/4 6 8.14 15.54
3.20 .1260 1-5/8 2-3/4 12 2.85 4.54 8.70 .3425 3-7/16 4-3/4 6 8.25 15.65
3.50 .1378 1-3/4 2-7/8 12 2.85 5.28 9.00 .3543 3-7/16 4-7/8 6 8.25 15.65
3.90 .1535 2 3-1/8 12 3.01 5.44 9.20 .3622 3-5/8 5 6 8.48 15.88
4.00 .1575 2-1/8 3-1/4 12 3.01 5.44 9.50 .3740 3-1/2 5 6 8.48 15.88
4.20 .1654 2-1/8 3-1/4 12 3.20 5.63 10.00 .3937 3-5/8 5-1/8 6 10.08 20.03
4.50 .1772 2-3/16 3-3/8 12 3.40 5.83 10.50 .4134 3-3/4 5-3/8 6 12.08 23.65
5.00 .1968 2-7/16 3-5/8 12 3.83 7.92 11.00 .4331 3-15/16 5-1/2 6 12.44 24.01
5.10 .2008 2-7/16 3-5/8 12 4.29 8.38 11.50 .4528 4-1/16 5-5/8 6 12.87 24.44
5.20 .2047 2-1/2 3-3/4 12 4.03 8.12 12.00 .4724 4-3/8 5-7/8 6 13.85 25.42
5.40 .2126 2-1/2 3-3/4 12 4.29 8.38 12.50 .4921 4-1/2 6 6 14.24 25.81
5.50 .2165 2-1/2 3-3/4 12 4.29 8.38 13.00 .5118 4-1/2 6 1 22.37 33.94
5.60 .2205 2-5/8 3-7/8 12 4.55 8.64 13.50 .5315 4-13/16 6-5/8 1 27.86 41.05
6.00 .2362 2-3/4 4 12 4.92 9.01 14.00 .5512 4-13/16 6-5/8 1 27.86 41.05
6.50 .2559 2-78 4-1/8 12 5.27 9.36 15.50 .6102 5-3/16 7-1/8 1 30.76 47.36
6.70 .2638 2-7/8 4-1/8 12 5.54 9.63 16.00 .6299 5-3/16 7-1/8 1 33.66 50.26
Sizes with decimal equivalent smaller than .0625 are not split point.
Sets

Size Pcs. Description Set No. Price
1/16 – 1/2 by 64 ths 29 H.S. 307FP 182.73
1/16 – 1/2 by 64 ths 29 TiN Coated 307FPT 303.76
All sets are supplied in Huot metal index

27