Type
Hex drive pilot
Part number
PM-HX-3
Guaranteed Fit
Fast Shipping
Hassle-Free Returns
Description
Made in USA
Direct fit
Overview
This hex-drive auger pilot is the PM-HX-3 for Digga RC4 combination bits, and it is worth noting that it is a hex rather than the square drive used on the A4 range — the two are not interchangeable despite sitting in the same position on similar-looking heads. Digga also specifies the PM-HX-3 on the A6 and A8 earth ranges, so it covers more than one bit family.
Key Features of the Digga PM-HX-3
- Part number PM-HX-3 — on a wear part the number is the fitment, and there is no size to choose
- Part number: PM-HX-3
- Type: Hex drive pilot
- Fits: Digga RC4 combination bits; also specified on A6 and A8
- Paired teeth: TTD-3 outer, TTS-3 inner on the RC4
- Hex drive, not square — the A4’s PM-SQ pilots will not fit an RC4 and vice versa.
- Also specified on the A6 and A8 ranges, so one pilot part covers several bit families.
- Starts the hole and holds the position under the heaviest point loading on the head.
- Direct replacement with no modification.
- Made in Dyersville, Iowa.
Why Replace the Pilot Rather Than the Whole RC4 Bit
- On a combination bit the pilot works harder — it meets rock before the teeth do, at a single point.
- A worn pilot on an RC4 shows as wandering in rock specifically, while the bit still behaves in soil.
- Larger diameters use the PH-3XL pilot instead on the RC6 and above, so check your bit before you order.
Digga PM-HX-3 Specifications
| Specification | Value |
|---|---|
| Part number | PM-HX-3 |
| Type | Hex drive pilot |
| Fits | Digga RC4 combination bits; also specified on A6 and A8 |
| Paired teeth | TTD-3 outer, TTS-3 inner on the RC4 |
| Not interchangeable with | PM-SQ-1 and PM-SQ-3, which are square drive for the A4 |
| Origin | Made in Dyersville, Iowa, USA |
The PM-HX-3 and the part numbers beside it are taken from Digga’s published price list. Teeth and pilots are consumable by design — replacing them on time is what keeps the auger tube, flights and hub in service.
The Full RC4 Wear Part Set
| Position | Part number | Configuration |
|---|---|---|
| Outer tooth | TTD-3 | Double tungsten taper tooth |
| Inner tooth | TTS-3 | Single tungsten taper tooth |
| Pilot | PM-HX-3 | Hex drive pilot |
| Retaining pin | WP-000271 | TruLoc single pin, sold separately |
What Does the PM-HX-3 Fit?
| Fitment factor | Requirement |
|---|---|
| Auger bit | Digga RC4 combination bits, and the A6 and A8 earth ranges |
| Position | Centre of the cutting head |
| Drive type | Hex — the A4 range uses square drive pilots instead |
| Larger bits | RC6 and above use PH-3 or PH-3XL — check your bit model |
Note your auger bit model at checkout and we confirm the PM-HX-3 is the right profile for it before the order ships.
What to Order Alongside the PM-HX-3
- The other RC4 positions — a head running a fresh PM-HX-3 against worn teeth elsewhere wears unevenly and cuts on two planes.
- TruLoc retaining pins (WP-000271) where the tooth is pin-retained — pins are what gets lost during a field change.
- A spare set for the truck — teeth are low-cost consumables, and a set on board turns a failed hole into a ten-minute job.
Digga PM-HX-3 Questions, Answered
Will the PM-HX-3 fit my A4 bit?
No. The A4 uses square drive pilots — PM-SQ-1 or PM-SQ-3. The PM-HX-3 is hex drive and fits the RC4, A6 and A8. The seats are genuinely different, not just differently named.
My bit is an RC6 — is this the right pilot?
No. The RC6 uses PH-3, and PH-3XL on augers above 36". The PM-HX-3 is specified for the RC4, A6 and A8. Check your bit model rather than assuming the hex drive means it fits.
When should I replace it?
When the cutting edge has rounded off, when penetration slows for the same down-pressure, or when the drive is working noticeably harder for the same hole. Past that point wear transfers into the auger head itself, and the head is not a replaceable part.
Is a retaining pin included?
No. The TruLoc single pin, part number WP-000271, is a separate item. Keep spares — the pin is usually what goes missing during a change in the field.
Can I mix tooth types on one head?
Not advisable. Mixed teeth wear at different rates and sit at slightly different heights, which loads some pockets harder than others and leaves a rougher hole. Run a matched set and replace them together.
How is shipping calculated?
Shipping is calculated at checkout — add the item to your cart, enter your delivery address, and the shipping charge is shown before you complete your order. Lift gate service is available for residential deliveries and can be selected at checkout.
How do I order?
Add the item to your cart and check out online — the order page asks for your machine make and model, so there is no need to call ahead. We check the mount against your machine after the order and come back to you if anything needs changing. If you would rather ask first, email support@eskidsteer.com or use the chat button on your screen.
The PM-HX-3 is searched for as auger teeth, as an rock auger bit, and by crews looking specifically for skid steer auger bit to refresh a worn head. It sits alongside auger replacement parts and auger bit teeth in the same wear-part order. The PM-HX-3, like the rest of the range, is genuine digga auger tooling made in Dyersville, Iowa.
Because the PM-HX-3 crosses three bit families, it is a sensible part to keep on the shelf if you run a mixed set of Digga augers — one pilot number covering an RC4, an A6 and an A8 is unusual in a range where most wear parts are specific to a single bit.
Digga PM-HX-3 Downloads
Digga PM-HX-3 Video
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