Skip to content
WhatsApp
Request a Quote
Anchors & Concrete Fixings · Trade series (Hilti HDA-T)

M12 Hilti HDA-T Self-Undercutting Mechanical Anchors Dimensions

Controlling dimensions to Trade series (Hilti HDA-T), with tolerances and fit.

M12 Hilti HDA-T Self-Undercutting Mechanical Anchors dimensions to Trade series (Hilti HDA-T): coarse thread pitch 1.75 mm.

Coarse thread pitch
1.75 mm

Figures are nominal values from the governing standard. Confirm against the tolerance class for your application before machining or ordering.

M12 Hilti HDA-T Self-Undercutting Mechanical Anchors Dimensions reference image

Dimensional data for M12 Hilti HDA-T Self-Undercutting Mechanical Anchors to Trade series (Hilti HDA-T), with the installation notes for this type. Values are taken from the governing standard rather than from a general machine-thread table, because this type is not selected on one.

M12 Dimensional Row (Trade series (Hilti HDA-T))

Anchor sizeAvailable embedment options (mm)Maximum fixture thickness options (mm)FinishBase materialLoad cases
M12100 / 125 / 190 / 25020 / 30 / 40 / 50 / 60 / 100electro-zinc plated, minimum 5 u00b5mcracked and non-cracked concretestatic / dynamic / seismic

Technical Drawing

Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.

Sends the selected values to the quote form below.

Request a Quote

The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.

Request a Quotation

Specification
Business Information

Dimensions & Specifications (Trade series (Hilti HDA-T))

Anchor sizeAvailable embedment options (mm)Maximum fixture thickness options (mm)FinishBase materialLoad cases
M10100 / 125 / 190 / 25020 / 30 / 40 / 50 / 60 / 100electro-zinc plated, minimum 5 u00b5mcracked and non-cracked concretestatic / dynamic / seismic
M12100 / 125 / 190 / 25020 / 30 / 40 / 50 / 60 / 100electro-zinc plated, minimum 5 u00b5mcracked and non-cracked concretestatic / dynamic / seismic
M16100 / 125 / 190 / 25020 / 30 / 40 / 50 / 60 / 100electro-zinc plated, minimum 5 u00b5mcracked and non-cracked concretestatic / dynamic / seismic
M20100 / 125 / 190 / 25020 / 30 / 40 / 50 / 60 / 100electro-zinc plated, minimum 5 u00b5mcracked and non-cracked concretestatic / dynamic / seismic

Applications & Industries for M12 Hilti HDA-T Self-Undercutting Mechanical Anchors

What Hilti HDA-T Self-Undercutting Mechanical Anchors are specified for, industry by industry. Stocked from M10 to M20.

Industries that specify Hilti HDA-T Self-Undercutting Mechanical Anchors

  • Plant installation Machine hold-downs where edge distance and spacing need design control.
  • Infrastructure maintenance Anchored rails, barriers and brackets in existing concrete.
  • Concrete base plates Post-installed threaded anchors for steel columns and equipment frames.
  • Bridge retrofit Removable structural attachments installed in existing cracked concrete.
  • Plant installation Machines and equipment held down to a concrete floor.
  • Fit-out & drylining Fixings into board, block and hollow wall.

Typical applications

  • using an externally threaded fixing where the fixture may be removed
  • selecting the installation from the applicable Hilti approval or design report
  • creating a mechanical undercut in a drilled concrete hole
  • installing a threaded anchor with a specified embedment and fixture thickness
  • suspended services on threaded rod
  • making a load-bearing threaded fixing in concrete or masonry

Service conditions to specify against

Marine and coastal
Available in A4 (316) stainless for chloride exposure — coastal structures, pool halls, water treatment and deck hardware, where A2 will eventually pit.
The concrete governs
Capacity is a property of the base material and the geometry — grade, edge distance, spacing and cracked or uncracked — not of the anchor alone. Work to the anchor manufacturer's ETA or ICC-ES report.
Hole preparation
Drilled diameter, depth and cleanliness are part of the specification; an uncleaned hole is the single most common cause of a failed anchor.

Where to use something else

  • Do not use the catalog series options as an allowable load table; the approval controls concrete condition and capacity.
  • Not for a substrate the type is not qualified in — an expansion anchor near an edge or in hollow block will split it.

Full application guide: where Hilti HDA-T Self-Undercutting Mechanical Anchors are used, how to specify them, and the cases they are wrong for

Inside the plant

Manufactured in our own plant

This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.

  1. Wire rod feeding into a cold heading machine
    01

    Cold heading

    Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail.

    Head dimensions and under-head radius checked at set-up and per shift.

  2. Thread rolling machine producing bolt threads
    02

    Thread rolling

    Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch.

    Go / no-go ring gauges to ISO 965 tolerance class 6g.

  3. Baskets of bolts staged for heat treatment
    03

    Heat treatment

    Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it.

    Core hardness and tensile tested per lot to ISO 898-1.

  4. Zinc plated bolts in a treatment basket
    04

    Surface treatment

    Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list.

    Coating thickness and neutral salt spray hours to ISO 9227.

Frequently Asked Questions

What is the coarse-thread pitch of M12 for Hilti HDA-T Self-Undercutting Mechanical Anchors?

For M12 the standard coarse pitch is 1.75 mm — this is the value used for Hilti HDA-T Self-Undercutting Mechanical Anchors.

What clearance and tapping drill suit M12?

Use a 13.5 mm clearance hole (ISO 273 medium) for through-fixing, or a 10.2 mm tapping drill for a coarse M12 thread.

How do I request a quotation?

Use the technical drawing on this page to pick the exact configuration, then submit it with the quote form. We respond within one business day.