Page 149 - Michigan Drill

Interchangeable

Pilot Counterbores

High Speed Steel

Short Series  Continued
For use with interchangeable Pilots
Used to enlarge the openings of a hole to allow room for the head COUNTERBORES
of a screw. Also for general purpose counterboring and spot facing.
List No. 500 – Straight Shank
List No. 501 – Taper Shank Straight Shank Taper Shank
501
500
Pilot Range of Number Overall Shank Price Morse Price
Size
Hole Size Pilot Sizes of Flutes Length Diameter Each Taper No. Each
1-1/8 5/16 5/16 - 1-3/8 3 6-3/8 1 73.26 3 79.55
1-5/32 5/16 5/16 - 1-3/8 3 6-3/8 1 85.95 3 85.95
1-3/16 5/16 5/16 - 1-3/8 3 6-3/8 1 79.38 3 81.65
1-7/32 5/16 5/16 - 1-3/8 3 6-3/8 1 99.00 3 96.30
1-1/4 3/8 1/4 - 1-7/16 5 6-5/8 1 92.12 3 96.30
1-9/32 3/8 1/4 - 1-7/16 5 6-5/8 1 98.00 — —
1-5/16 3/8 1/4 - 1-7/16 5 6-5/8 1 106.38 3 106.77
1-11/32 3/8 1/4 - 1-7/16 5 6-5/8 1 106.38 3 106.77
1-3/8 3/8 1/4 - 1-7/16 5 6-5/8 1 106.38 3 106.77
1-13/32 3/8 1/4 - 1-7/16 5 6-5/8 1 110.26 — —
1-7/16 3/8 1/4 - 1-7/16 5 7-7/8 1-1/4 110.26 4 113.85
1-15/32 3/8 1/4 - 1-7/16 5 7-7/8 1-1/4 119.26 — —
1-1/2 3/8 1/4 - 1-7/16 5 7-7/8 1-1/4 119.26 4 119.60
1-9/16 7/16 15/32 - 1-7/8 5 8-1/8 1-1/4 145.28 4 145.28
1-5/8 7/16 15/32 - 1-7/8 5 8-1/8 1-1/4 161.38 4 163.26
1-11/16 7/16 15/32 - 1-7/8 5 8-1/8 1-1/4 171.18 4 172.53
1-3/4 7/16 15/32 - 1-7/8 5 8-1/8 1-1/4 173.88 4 175.95
1-13/16 7/16 15/32 - 1-7/8 5 8-1/8 1-1/2 182.34 4 192.69
1-7/8 7/16 15/32 - 1-7/8 5 8-1/8 1-1/2 190.52 4 192.69
1-15/16 7/16 15/32 - 1-7/8 5 8-1/8 1-1/2 208.00 4 210.00
2 1/2 17/32 - 3 5 8-3/8 1-1/2 215.64 4 217.62
2-1/16 1/2 17/32 - 3 5 9-7/8 — — 5 272.16
2-1/8 1/2 17/32 - 3 5 9-7/8 1-1/2 272.16 5 272.16
2-3/16 1/2 17/32 - 3 5 9-7/8 — — 5 288.90
2-1/4 1/2 17/32 - 3 5 9-7/8 1-1/2 284.40 5 288.90
2-5/16 1/2 17/32 - 3 5 9-7/8 1-1/2 — 5 314.10
2-3/8 1/2 17/32 - 3 5 9-7/8 1-1/2 304.20 5 314.10
2-7/16 1/2 17/32 - 3 5 9-7/8 — — 5 333.00
2-1/2 1/2 17/32 - 3 5 9-7/8 1-1/2 315.00 5 333.00
2-9/16 1/2 17/32 - 3 5 9-7/8 — — 5 413.10
2-5/8 1/2 17/32 - 3 5 9-7/8 1-3/4 396.90 5 436.50
2-3/4 1/2 17/32 - 3 5 9-7/8 1-3/4 469.00 5 487.80
2-7/8 1/2 17/32 - 3 5 9-7/8 1-3/4 488.00 5 532.80
3 1/2 17/32 - 3 5 9-7/8 1-3/4 505.00 5 532.80

Sets

Set
Description 13 Counterbores 26 Pilots Pcs. Price
No.
Straight Shank 1/4, 5/16, 3/8, 7/16, 1/8, 5/32, 3/16, 1/4 with 3/32 shank 39 500SA 825.03
1/2, 9/16, 5/8,11/16, 3/16, 7/32, 1/4, 9/32, 5/16 with 5/32 shank
3/4, 13/16, 7/8, 15/16, 1 1/4, 5/16, 3/8, 7/16, 1/2 with 3/16 shank
5/16, 3/8, 7/16, 1/2, 9/16, 5/8 with 1/4 shank
3/8, 7/16, 1/2, 9/16, 5/8, 3/4 with 5/16 shank
Taper Shank 1/4, 5/16, 3/8, 7/16, 1/8, 5/32, 3/16, 1/4 with 3/32 shank 39 501S 855.20
1/2, 9/16, 5/8,11/16, 3/16, 7/32, 1/4, 9/32, 5/16 with 5/32 shank
3/4, 13/16, 7/8, 15/16, 1 1/4, 5/16, 3/8, 7/16, 1/2 with 3/16 shank
5/16, 3/8, 7/16, 1/2, 9/16, 5/8 with 1/4 shank
3/8, 7/16, 1/2, 9/16, 5/8, 3/4 with 5/16 shank

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