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Anchor bolt M12 "Heavy", AS 12XX0

Stainless steel anchor bolt M12

Product Sheet

Description / Price

Anchor bolt made of stainless steel A 2 with variable length, M 12, with two nuts and spring washers for the fastening of a bar on both sides, with nut, spring washer and with polished covering plate / seal for the drill hole. Wall spacing above the shank length is selectable, heavy load handling. The anchor bolt is delivered dismantled, possibly. 

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For permanent corrosion-free wall fastening of customary wooden espaliers and especially for bars of classical wooden espaliers. Please note the general tips on espalier fastening as well. The width of the material of the wooden parts to be fastened should account for at least 27 - 30 mm due to the required bore of 12 mm, in order to retain the cross section. With a wall spacing (gap) of about 3 - 9 cm. The actual wall spacing arises from the wall gap and the amount of the unscrewed cross sections. In the case of a battening 27/27 mm, it may account for about 14 cm. For many wall types such as concrete, natural stone, solid masonry, hollow masonry, as well as hardwood (framework). Not recommended for insulation, in that case, please use anchor AS 12XX2! Especially for more loaded espaliers used for fruits or vine and climbing Roses. In the case of broader espaliers with a spacing of about 0.6 to 1.2 m (depending on the thickness and bending of the wood cross section), place a bolt anchor into the bar, respectively. According to the wished wall spacing (wall gap) and the plaster thickness of the load-bearing wall, the element is available in a variable measure with the following item numbers:


Wall Spacing (gap)

Item number

3 cm

AS 12160

5 cm

AS 12190

7 cm

AS 12220

9 cm

AS 12250

Please note: The chart is vaild for the fastening of espalier bars of about 30 mm thickness. If delicate prefab espaliers are installed with a thickness of only 10 mm for instance, a respectively 20 mm shorter anchor bolt is to be picked. Broader wall spacing lowers the risk of mildew on prone climbing plants. The loadability of the anchor bolt though, declines proportionally with increasing wall spacing from "heavily loadable" to "medium loadable" due to the flexural buckling effect.


Recommended Tools

Hammer drill bit HB 16210 for all drilling work with or without sieve sleeves.


 Mounting with Component Mortar
Please note the sequence of steps for planning and realisation of wooden espaliers! At first, the wall structure should be known, in order to get the anchor bolts at a suitable length with the correct plug system.
The wooden parts to be fastened receive a through-hole of 12 mm at the respective fastening points, the wall receives a bore of 14 mm, or even better, 16 mm. Each flexible part of the anchor bolt is turned forward. About 8 - 12 cm length of the back shank is caulked into the wall. Please note the instructions of the component mortar VM 00300. After the pasting in of the anchor bolt into the drill hole filled with the component mortar, the hole might need to be stabilised with bracings (for example matches), stuck into the lower edge of the drill hole, so that the bolt will not tilt downwards during the setting of the mortar. Oozing out mortar needs to be wiped clean. A later correction of the insertion depth is not possible after the setting of the mortar. If the anchor bolt does not seat properly, it may be fixed with a hammer blow.
As soon as the total loadability of the shank is reached according to the given setting time on the mortar cartridge, the plate-shaped covering plate as well as spring washer and nut are pushed towards the wall and screwed to it.
Afterwards, the respective espalier bar needs to be installed between both, spring washers and nuts.


Mounting with component mortar and perforated sleeve

This type of fastening is necessary for hollow masonry (for instance "poroton") behind the insulation. Additionally, perforated sleeves are needed. Normally, the perforated sleeve SD 16085 is sufficient. From a wall spacing of 7 cm, the perforated sleeve extra long (SD 16130) is recommended. Mounting as above, the drill hole cross section though, is 16 mm, the insertion depth is about 8 cm (perforated sleeve SD 16085), in the case of extra long perforated sleeve SD 16130, 11 - 12 cm.



 "Made in Germany", hex nuts from Far East

Finished wooden trellis
Anchor bolt with trellis
Anchor bolt glued in with composite mortar and sieve sleeve. The bolts protrusion depends on the preferred wall spacing and the thickness of the cross bar.
Stainless steel anchor bolt
Installed anchor bolt with large wall spacing, oak cross bar
Installed trellis cross bar