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Seco D12388 Drill and Tap Kit for mounting Spectra DM-20 Bulldozer Mast

Spectra Precision

MSRP: $125.00
$89.95
(You save $35.05 )
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SKU:
SEC-D12388-609
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Purpose-Built Mounting Hardware for Professional Grade Control

The Seco D12388 Drill and Tap Kit delivers everything earthwork contractors need to permanently and securely mount the Spectra DM-20 mast to dozer blade brackets. Whether you're prepping a machine in the shop or fitting out a fleet on a tight schedule, this kit eliminates the guesswork by providing the correct drill bits, taps, and hardware in a single package — ensuring a clean, thread-accurate installation every time.

Product Overview & Jobsite Applications

Dozer-mounted grade control systems demand rock-solid mast attachment. Vibration, ground shock, and constant blade cycling create relentless stress on mounting points. The D12388 kit is engineered specifically for the DM-20 mast interface, giving contractors a manufacturer-approved method to drill and tap blade bracket steel to the precise specifications required. This eliminates field improvisation and protects the investment in both the mast and the grade control receiver above it. Ideal for new machine setups, fleet retrofits, and replacement installations after bracket damage.

Key Specifications

  • Part Number: D12388
  • Manufacturer: Seco
  • Compatible Mast: Spectra Precision DM-20 Dozer Mast
  • Application: Drill and tap mounting for dozer blade bracket steel
  • Kit Type: Complete installation hardware set
  • Usage: Professional contractor grade control mounting

What's in the Kit

  • Correct-Spec Drill Bit(s): Sized precisely for DM-20 mast bolt pattern pilot holes
  • Matching Tap(s): Thread-cut taps calibrated to DM-20 fastener thread specifications
  • Installation Hardware: Fasteners and components required to complete the mount
  • Manufacturer Instructions: Step-by-step guidance for accurate field or shop installation

Job Applications

New Machine Setup: Outfit a fresh dozer with a DM-20 grade control mast from day one. Drill and tap blade brackets to factory spec before the machine ever hits a job site, ensuring a clean installation with no field modifications required.

Fleet Retrofits: Upgrading multiple machines to laser grade control? The D12388 kit standardizes the installation process across your fleet, so every mast is mounted identically and technicians know exactly what to expect on every unit.

Bracket Replacement After Damage: When a blade strike or transport incident damages an existing mounting bracket, the D12388 lets crews re-drill and re-tap replacement steel to restore a proper mast mount without sending the machine to a dealer.

Rental Machine Prep: Equipment rental operations adding DM-20 masts to rental dozer inventory can use this kit to prepare machines quickly and consistently, minimizing downtime between customer deployments.

Compatible Accessories

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Frequently Asked Questions

What equipment is the Seco D12388 Drill and Tap Kit designed for?
The D12388 is specifically designed for mounting the Spectra Precision DM-20 dozer mast to dozer blade brackets. It provides the correct drill bits, taps, and hardware to achieve a manufacturer-specified installation on the dozer blade bracket steel.
Does this kit include all the hardware needed for a complete DM-20 mast installation?
The D12388 kit includes the drilling and tapping components plus associated fasteners needed to prepare the blade bracket and secure the DM-20 mast mount. For a complete grade control system, you will also need the DM-20 mast and your laser receiver assembly, available separately.
Can this kit be used on any dozer brand or is it machine-specific?
The D12388 is designed around the DM-20 mast mounting bolt pattern and thread specifications. It is compatible with any dozer model where the DM-20 blade bracket adapter is being used, making it broadly applicable across major dozer brands including Caterpillar, John Deere, and Komatsu when paired with the correct Seco bracket adapter.
Is the Seco D12388 a one-time use kit or can it be reused?
Drill bits and taps in the kit can typically be reused for multiple installations depending on the hardness of the bracket steel and care during use. Fasteners included in the kit are generally intended for a single installation. Contact Express Tools if you need replacement consumable components for ongoing fleet work.
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