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PROPALOCK
Propalock has been designed to fit adjustable telescopic steel props manufactured to comply with British Standards BS 4074: 1982 and BS EN: 1065:1999.
Propalock has 7mm tolerance to accommodate fitting and minor variations in steel prop diameter that may be the result of normal wear and tear, corrosion or build-up of surface finish such as overpainting.
Propalock is fitted to the lower overtube of the steel prop.
Propalock uses a fine-pitch threaded bolt with a unique coded head.
The diameter of the lower outer tube is 60mm, the circumference is 189mm.
Propalock’s operating diameter range is 64mm when open and 57mm closed.
Propalock is designed and manufactured in England.
UK Patent no: GB2482581 US Patent no: 8,998,159B2
Once fitted and locked, movement of the collar is not possible, thereby preventing northwards adjustment of movement.