458A Single-Flute Countersink

In stock

SKU

458A

M2 High Speed Steel                                                     One flute                                                 House standard
Parallel shank

Countersinks for opening pre-existing holes in a range of materials where 3-flute or multiflute tools may chatter
or produce a poor surface, and which are useful for opening holes as small as 10 percent of the finish diameter*
Can be used for high speed, portable operations.

Currently stocked in a range of sizes in 90° included angle only. Angles such as 60°, 82°, 100° and 120° may
be supplied to special order, for which there may be limited quantity extras. Please enquire.

Grouped product items
Product Name	Diameter	Included Angle	Small End	Shank Diam	Overall Length
458A 1/4 x 90 Single Flute Countersink £9.32 - 5 in stock	1/4	90	1/32	3/16	1,1/2
458A 3/8 x 90 Single Flute Countersink £11.63 - 45 in stock	3/8	90	1/32	1/4	1,7/8
458A 1/2 x 90 Single Flute Countersink £14.51 - 5 in stock	1/2	90	3/64	1/4	2
458A 3/4 x 90 Single Flute Countersink £31.96 - 1 in stock	3/4	90	5/64	1/2	2,1/2

Details

*For producing ’starter’ centre holes for later drilling from solid material, please see our range of Spotting/Centering Drills
In our Drill catalogue, under series 185A and 185B.

*For routine drilling and countersinking in one operation to produce standard centre holes for turning, please see our large range of
Centre drills (Combined drills and countersinks) in our drill catalogue under series 280A to 283A

Please note that countersinks are suitable for sinking a range of diameters, so that the large (outside) tool diameter
is rarely critical, and therefore near fractional and metric sizes may be used interchangeably. This increases the range of options.