hex rotary broach diagram

Hexagon (Hex) Rotary Broaches (8mm Shank Diameter x 28mm Length)

Polygon Solutions’ 8mm shank x 28mm overall length 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 x 28mm overall length 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.
View our micro rotary broach tool holder for these broaches.

Download Hex Rotary Broach Brochure8mm Shank Diameter x 28mm 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 Micro Rotary Broach .0510 .102

H00510C $49.00 .050 hex micro rotary broach
1/16″ Hexagon Micro Rotary Broach .0635 .127

H00635C $49.00 1/16 hex micro rotary broach
5/64″ Hexagon Micro Rotary Broach .0790 .158

H00790C $49.00 5/64 hex micro rotary broach
3/32″ Hexagon Micro Rotary Broach .0950 .190

H00950C $49.00 3/32 hex micro rotary broach
7/64″ Hexagon Micro Rotary Broach .1110 .222

H01110C $49.00 7/64 hex micro rotary broach
1/8″ Hexagon Micro Rotary Broach .1265 .253

H01265C $49.00 1/8 hex micro rotary broach
9/64″ Hexagon Micro Rotary Broach .1425 .285

H01425C $49.00 9/64 hex micro rotary broach
5/32″ Hexagon Micro Rotary Broach .1585 .317

H01585C $49.00 5/32 hex micro rotary broach
11/64″ Hexagon Micro Rotary Broach .1740 .348

H01740C $49.00 5/32 hex micro rotary broach
3/16″ Hexagon Micro Rotary Broach .1895 .379

H01895C $49.00 3/16 hex micro rotary broach
7/32″ Hexagon Micro Rotary Broach .2215 .443

H02215C $49.00 7/32 hex micro rotary broach
1/4″ Hexagon Micro Rotary Broach .2525 .505

H02525C $49.00 1/4 hex micro rotary broach
Nominal Size
(Metric)
Across
Flats (A)
Broaching
Depth (B)
Includes
Vent Hole
Part
Number
Price Order
1.30mm Hexagon Micro Rotary Broach .0515 .103 H00515C $49.00 1.3mm hex micro rotary broach
1.50mm Hexagon Micro Rotary Broach .0610 .122 H00610C $49.00 1.5mm hex micro rotary broach
2mm Hexagon Micro Rotary Broach .0810 .162

H00810C $49.00 2mm hex micro rotary broach
2.50mm Hexagon Micro Rotary Broach .1010 .202

H01010C $49.00 2.5mm hex micro rotary broach
3mm Hexagon Micro Rotary Broach .1210 .242

H01210C $49.00 3mm hex micro rotary broach
3.50mm Hexagon Micro Rotary Broach .1410 .282

H01410C $49.00 3.50mm hex micro rotary broach
4mm Hexagon Micro Rotary Broach .1610 .322

H01610C $49.00 4mm hex micro rotary broach
5mm Hexagon Micro Rotary Broach .2000 .400

H02000C $49.00 5mm hex micro rotary broach
6mm Hexagon Micro Rotary Broach .2400 .480

H02400C $49.00 6mm hex micro 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.