Frequently asked questions about the Anchors category
Anchors — what are they and what are they used for?
Anchors are fastening components used to securely attach structures and equipment to concrete, brick and other solid substrates. They provide strength and stability for fixings, especially when installing heavy items like frames, cabinets and mechanical equipment.
What types of anchors are there and how do wedge, steel and drywall anchors differ?
The range includes wedge anchors (high load capacity in concrete), steel expansion anchors/bolts (versatile for solid substrates) and drywall anchors (spring or expanding designs for hollow walls). Choose based on substrate type and applied load.
Which anchors are suitable for concrete?
Wedge anchors such as the KZN series (e.g. KZN 16X178/60) and steel expansion anchors/bolts are suitable for concrete, offering high load capacity when embedded correctly. Select diameter and length according to the required load.
Which anchors to choose for hollow brick and drywall?
Use special anchors for hollow substrates: for drywall choose spring or expanding anchors (e.g. FISCHER DUOTEC 10 or VEDR. MF-M 06); for hollow brick use expanding-shell or chemical anchors. They distribute load and avoid damaging the substrate.
What does 'long anchors' mean and when are they needed?
'Long anchors' are anchors with extended lengths, e.g. KZN wedge anchors in sizes like 16X178/60 or 16X138/20. They are required for thick substrates or when deeper embedment is needed through thick cladding or structural elements.
How to choose anchor bolt diameter and length?
Choose diameter and length based on load and substrate thickness: use larger diameters (M8, M10, M16) for heavier loads. Length must allow required embedment depth in the substrate plus the thickness of the fixture and allowance for washer and nut.
Fischer anchors — how do they differ and when to choose Fischer?
Fischer anchors (including DUOTEC) are known for reliable solutions for drywall and hollow materials; DUOTEC 10 is tailored for hollow substrates. Choose Fischer when you need a proven brand with a wide range of specialised fixings.
Which anchor brands are in the catalogue and why are they useful?
The catalogue includes Classen, ESSVER, Cobra, Fischer, Hilti, Mungo, Rawlplug and TOX. These brands provide wedge anchors, steel bolts and drywall fixings, simplifying selection for different substrates and load requirements.
Can wedge anchors be used in brick and what sizes are available?
KZN wedge anchors are suitable for solid brick and concrete; available sizes include KZN 16X138/20 and KZN 16X178/60. Choose length and diameter based on wall thickness and required embedment depth.
How does the M6x71 SAM steel anchor differ from M6x58 in the range?
M6x71 SAM and M6x58 differ by length and design: M6x71 SAM is longer (often two-part) offering deeper embedment and higher capacity, while M6x58 is shorter for shallower fixings. Choose based on required embedment depth and load.