M16 Self-Undercutting Mechanical Anchors Dimensions

Applications & Industries for M16 Self-Undercutting Mechanical Anchors

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

Industries that specify 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 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 Self-Undercutting Mechanical Anchors are used, how to specify them, and the cases they are wrong for