catalog

Carbide Reverse Countersinks

181 Series

181 SERIES carbide reverse countersinks are similar in design to the 180 Series speed cutters. They excel in cutting highly abrasive materials, the “difficult to machine" materials, and in cutting any material where longer tool life is desired. 186 Series step pilots are recommended for use with carbide tipped cutters as tipped cutters have a maximum non-cutting diameter 1/32 larger than pilot hole, see sketch.

Standard in three flutes with 100 degree countersink angle. Special "D" cutter diameters readily ground from standard. Special sizes given prompt attention.

TOOL NUMBER
"D" CUTTER DIA.
"PH" PILOT HOLE
OAL
CONSTRUCTION
PILOT REF. *
PLAIN PILOT
STEP PILOT
181-1J
1/4
3/32
1/2
Solid Carbide
185-1
186-1
181-1K
1/4
1/8
1/2
Solid Carbide
185-2
186-2
181-2J
5/16
3/32
1/2
Solid Carbide
185-1
186-1
181-2K
5/16
1/8
1/2
Solid Carbide
185-2
186-2
181-2L
5/16
5/32
1/2
Solid Carbide
185-3
186-3
181-3J
3/8
1/8
1/2
Solid Carbide
185-2
186-2
181-3K
3/8
5/32
1/2
Solid Carbide
185-3
186-3
181-3L
3/8
3/16
1/2
Solid Carbide
185-4
186-4
181-4J
7/16
1/8
1/2
Solid Carbide
185-2
186-2
181-4K
7/16
5/32
1/2
Solid Carbide
185-3
186-3
181-4L
7/16
3/16
1/2
Solid Carbide
185-4
186-4
181-5J
1/2
5/32
1/2
Solid Carbide
185-3
186-3
181-5K
1/2
3/16
1/2
Solid Carbide
185-4
186-4
181-5L
1/2
1/4
1/2
Solid Carbide
185-5
186-5
181-6J
9/16
5/32
5/8
Solid Carbide
185-3
186-6
181-6K
9/16
3/16
5/8
Solid Carbide
185-4
186-7
181-6L
9/16
1/4
5/8
Solid Carbide
185-5
186-8
181-7J
5/8
3/16
5/8
Solid Carbide
185-4
186-7
181-7K
5/8
1/4
5/8
Solid Carbide
185-5
186-8
181-7L
5/8
5/16
5/8
Solid Carbide
185-6
186-9
181-8J
11/16
3/16
5/8
Solid Carbide
185-4
186-7
181-8K
11/16
1/4
5/8
Solid Carbide
185-5
186-8
181-8L
11/16
5/16
5/8
Solid Carbide
185-6
186-9
181-9J
3/4
1/4
7/8
Solid Carbide
185-5
186-12
181-9K
3/4
5/16
7/8
Solid Carbide
185-6
186-13
181-9L
3/4
3/8
7/8
Solid Carbide
185-7
186-14
181-10J
7/8
1/4
7/8
Solid Carbide
185-5
186-12
181-10K
7/8
5/16
7/8
Solid Carbide
185-6
186-13
181-10L
7/8
3/8
7/8
Solid Carbide
185-7
186-14
181-11J
1
5/16
7/8
Solid Carbide
185-6
186-13
181-11K
1
3/8
7/8
Solid Carbide
185-7
186-14
181-11L
1
1/2
7/8
Solid Carbide
185-8
186-17
181-12J
1-1/4
3/8
1-1/8
Carbide Tipped
 
186-18
181-12K
1-1/4
1/2
1-1/8
Carbide Tipped
 
186-19

When ordering please specify: Tool number and included countersink angle, Example: 181 -5J-100°. List prices for 100° countersink angle only. Other angles and sizes available, subject to quotation.

* For pilot information see 185 Series and 186 Series.

Please complete the information below and click "submit" to send Special Order Countersinks or to upload your prints. If you have any questions contact one of our sales representatives at 310-322-0614

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