hex rotary broach diagram

Hexagon (Hex) Rotary Broaches (8mm Shank Diameter)

Polygon Solutions’ 8mm shank hexagon rotary broaches are precision ground with a tolerance of +0/-.0005. Each nominal size conforms to the industry standard – ANSI B18.3 2003. All 8mm shank hex rotary broach tools include a pressure relief vent hole that allows air and fluid to freely escape during the rotary broaching process to reduce wear on your machine and extend rotary broach tool life. Click Buy Now button to choose broach steel, coatings and quantity.

Download Hex Rotary Broach Brochure8mm Shank Diameter x 1-1/4″ Overall Length
All Broaches Larger than 5/64″ Include Pressure Relief Vent Hole

Nominal Size
(Inches)		 Across
Flats (A)		 Broaching
Depth (B)		 Includes
Vent Hole		 Part
Number		 Price Order
.050″ Hexagon Rotary Broach .0510 .102

H00510A $54.00 .050 hex rotary broach
1/16″ Hexagon Rotary Broach .0635 .127

H00635A $54.00 1/16 hex rotary broach
5/64″ Hexagon Rotary Broach .0790 .158

H00790A $54.00 5/64 hex rotary broach
3/32″ Hexagon Rotary Broach .0950 .190

H00950A $54.00 3/32 hex rotary broach
7/64″ Hexagon Rotary Broach .1110 .222

H01110A $54.00 7/64 hex rotary broach
1/8″ Hexagon Rotary Broach .1265 .253

H01265A $54.00 1/8 hex rotary broach
9/64″ Hexagon Rotary Broach .1425 .285

H01425A $54.00 9/64 hex rotary broach
5/32″ Hexagon Rotary Broach .1585 .317

H01585A $54.00 5/32 hex rotary broach
11/64″ Hexagon Rotary Broach .1740 .348

H01740A $54.00 11/64 hex rotary broach
3/16″ Hexagon Rotary Broach .1895 .379

H01895A $54.00 3/16 hex rotary broach
7/32″ Hexagon Rotary Broach .2215 .443

H02215A $54.00 7/32 hex rotary broach
1/4″ Hexagon Rotary Broach .2525 .505

H02525A $54.00 1/4 hex rotary broach
9/32″ Hexagon Rotary Broach .2840 .568

H02840A $76.00 9/32 hex rotary broach
5/16″ Hexagon Rotary Broach .3155 .631

H03155A $76.00 5/16 hex rotary broach
11/32″ Hexagon Rotary Broach .3470 .694

H03470A $86.00 11/32 hex rotary broach
Nominal Size
(Metric)		 Across
Flats (A)		 Broaching
Depth (B)		 Includes
Vent Hole		 Part
Number		 Price Order
1.30mm Hexagon Rotary Broach .0515 .103 H00515A $54.00 1.3mm hex rotary broach
1.50mm Hexagon Rotary Broach .0610 .122 H00610A $54.00 1.5mm hex rotary broach
2mm Hexagon Rotary Broach .0810 .162

H00810A $54.00 2mm hex rotary broach
2.50mm Hexagon Rotary Broach .1010 .202

H01010A $54.00 2.5mm hex rotary broach
3mm Hexagon Rotary Broach .1210 .242

H01210A $54.00 3mm hex rotary broach
4mm Hexagon Rotary Broach .1610 .322

H01610A $54.00 4mm hex rotary broach
5mm Hexagon Rotary Broach .2000 .400

H02000A $54.00 5mm hex rotary broach
6mm Hexagon Rotary Broach .2400 .480

H02400A $54.00 6mm hex rotary broach
7mm Hexagon Rotary Broach .2790 .558

H02790A $76.00 7mm hex rotary broach
8mm Hexagon Rotary Broach .3185 .637

H03185A $86.00 8mm hex rotary broach
9mm Hexagon Rotary Broach .3580 .716

H03580A $86.00 9mm hex rotary broach
10mm Hexagon Rotary Broach .3985 .757

H03985A $86.00 10mm hex rotary broach
11mm Hexagon Rotary Broach .4370 .874

H04370A $86.00 11mm hex rotary broach
12mm Hexagon Rotary Broach .4775 .955

H04775A $86.00 12mm hex rotary broach

Rotary Broach Custom Options

hex-broach-custom-across-the-flats
Our Hex Rotary Broaches can be ordered in custom dimensions. Can’t find the size you’re looking for? Polygon Solutions provides fast delivery on custom ½” or 8mm shank hexagon rotary broaches. Simply specify the desired across flat dimension when ordering. Polygon’s manufacturing tolerance is +0/-.0005”. For example, a custom hex broach with 0.1234” across flat dimension is part number H01234B.
Hex Rotary Broach Custom Broaching Depth
If you need a hex rotary broach to cut deeper than our standard dimensions, perhaps to clear a counter-bore, you can request a custom cut length. Custom cut lengths may be limited by the back-taper on the side of the hex broach, or manufacturing limitations. Please call (239) 628-4800 for more information. Rotary broaching more than 1-2x the across flat dimension may not be successful. Broaches may also be weakened because of a deeper cut length.
Hex Rotary Broach Custom Rake Angle
If you need a hex rotary broach to cut deeper than our standard dimensions, perhaps to clear a counter-bore, you can request a custom cut length. Custom cut lengths may be limited by the back-taper on the side of the hex broach, or manufacturing limitations. Please call (239) 628-4800 for more information. Rotary broaching more than 1-2x the across flat dimension may not be successful. Broaches may also be weakened because of a deeper cut length.
Single vent holes are standard with hex rotary broach forms larger than .079″ and allow air and/or fluid to pass though the hex broach and reduce any hydraulic pressure that may occur when broaching a blind hole. Polygon’s rotary broach tool holder is also designed with this feature. However, an additional cross vent hole can be added for holders without the pressure relief system.
Hex Rotary Broach Custom Dimensions
All of Polygon Solution’s hexagon rotary broaches are manufactured with a +0/-.0005” tolerance. However, hex broaches can be manufactured to a tighter +0/-.0004” tolerance. If you want to use the broach as a gauge, the hex broach can also be manufactured without a back-taper. For more information, see Rotary Broach Gauges.
Custom Corner Radius
If you part allows for a corner radius, we can add a spun ground diameter to the hex broach to remove the sharp corners. The spun ground diameter is useful for reducing the chip size and pressure required for long tool life and successful rotary broaching operations.