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Left-hand inserts are ideal for repairing stripped threads or creating new threads in a drilled hole to install left-hand threaded fasteners. Raptor Supplies offers these left-hand inserts
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AABCDAALeft-hand inserts are ideal for repairing stripped threads or creating new threads in a drilled hole to install left-hand threaded fasteners. Raptor Supplies offers these left-hand inserts from Chrislynn. They provide more strength, versatility & resilience than the fasteners installed inside traditional threaded holes. They have left-handed threads (also called reverse threads) for specialised applications like automotive, heating & plumbing pipes and gas supply valves, where right-hand threaded fasteners would loosen due to pressure.
Left-hand inserts feature a slightly larger diameter compared to the tapped hole diameter before installation, as the leading coil's diameter decreases when the installation tool applies torque to the insert's prong / tang. After these threaded inserts get installed, they act as a spring to expand outward onto the material and provide strong anchoring.
These inserts have an open end for allowing the installation of fasteners with a longer length than them.
Installation of these left-hand inserts requires a drill bit, a tapping tool, an installation tool and a prong break-off tool. Selected models come in a kit containing all these tools.
Yes, some thread inserts can be removed using removal tools that attach to them & unwind them in the direction opposite to that used during installation.