| Excalibur Screwbolt Hexagon Head ZINC & YELLOW|
|One fixing for all substrates |
Available in a wide range of head styles, lengths and diameters.
The Excalibur Screwbolt is the first Universal anchor primarily designed for use in all spectrums of industry.
Use the right drill.
Check that the drill bit diameter is correct for the Screwbolt size and substrate (refer to the relevant product page for specific details).
Screwbolt is designed to function correctly within DIN standards. Drill bits must not be worn below normal tolerance levels.
Drill deep enough.
The hole depth must be at least the embedment depth of the Screwbolt plus twice the diameter of the Screwbolt.
Clean out excess dust.
Use a good socket
For HSB and HSA heads, we recommend the use of a quality full hexagon socket or hexagon male drive with a ratchet spanner. Alternatively, where the substrate allows, a torque controlled impact wrench can be used.
Apply pressure to start.
Ensure that continual pressure is applied, particularly when engaging the first thread.
Back-off it tight.
During installation, debris or dust created by the thread cutting action may cause some resistance to be experienced. This is easily overcome by unscrewing the Screwbolt for one turn or more, and then continuing fix to full embedment.
Do not over tighten.
Care should be taken not to exceed maximum specified torque when tightening.
The screwbolts unique twin helical thread ensures high tensile-shear-close to edge and centre spacing safe loadings.
Wood, concrete block, brick and all grades of structural concrete are Excalibur Screwbolts' major areas of application. It can also cut a thread into steel. Screwbolt negates the need to change fasteners just because part of the job is fixed to brick, part to concrete and part to timber.
Excalibur Screwbolt's versatility enable it to replace virtually all the traditional masonary fasteners currently available.
For example, sleeve anchors, drop-ins, knock-ins, through bolts and resin anchors can be replaced by Excalibur Screwbolt.
The Screwbolt range of products have been and continue to be tested by the Imperial College London to UEAtc M.O.A.T 49 1992 standards.
Twin helical thread gives secure grip over full embedment.
30 degree helix angle for fast insertion with power or hand tools
(eg. 3 turns= 4?mm embedment on 8mm).
Wide pitch producing high strength grip without distressing surrounding substrate.
Deep thread engagement results in high performance. No expansion provides close to the edge fixing ability.
Self tapping of thread into substrate allows for removal and replacement.