NBS-BS Series

Our in-house manufactured flat ground or flat roof telescopic mast mount bases are manufactured to suit the base sections diameter of our NBS telescopic masts. Constructed of high quality machined marine grade aluminium the NBS-BSXX range of flat ground mount bases are suitable for use either in a fixed long-term location or temporary or long term ground secured locations. The slide-on, stepped locking design of the NBS-BS series allow for a secure base mounting for communications/surveillance/monitoring infrastructure.  We recommend your telescopic mast is guy wire supported with at least 3 or 4 guy wires per section.

Australian Owned & Manufactured Australian owned & manufactured for 50+ years.
In-house Support Experienced, knowledgeable in-house technical support
Customisation Available Customisation of finish, mounting and equipment fixings available
ISO Quality Certified QA Accredited ISO 9001 / ISO 14001 / ISO 45001


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  • NBS-BS45 – Suits 45mm O.D Base section (Example: NBS-2452)
  • NBS-BS50 – Suits 50mm O.D Base section (Example: NBS-2503)
  • NBS-BS55 – Suits 55mm O.D Base section (Example: NBS-3554)
  • NBS-BS61 – Suits 61mm O.D Base section (Example: NBS-2615)
  • NBS-BS68 – Suits 68mm O.D Base section (Example: NBS-3683)
  • NBS-BS76 – Suits 76mm O.D Base section (NBS-4761-MK only)

Base Dimensions

Diameter: 125mm x Height: 20mm


3.0kg – 3.6kg


Machined aluminium base plate and top mount spigot with 4 x 10mm O.D. mount holes

Installation tools required
not supplied

  • 4 x suitable mount bolts/ screws for flat roof mounting or
  • 4 x concrete securing bolts
  • 4 x ground penetrating pegs – requires additional counterweights

Suitable Telescopic masts

  • All 2.0 metre packed NBS telescopic masts
  • All 3.0 metre packed NBS telescopic masts

Included in Kit

  • 1 x flat roof/flat ground mount base

Stock Status

In-stock – ready for immediate dispatch

NBS-BS Series Technical Data Sheet