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The SECO 75055890 is a hex socket drive set screw designed for indexable boring head tooling in the Graflex series. It secures indexable inserts within the boring head body, maintaining precise insert positioning during cutting operations. The screw uses a 5 mm hex socket drive, compatible with an H05-4 key driver. Installation and removal are performed without disassembling the tooling assembly. This fastener is a direct service component used by machinists and tooling technicians maintaining indexable boring head setups.
This set screw is used in indexable boring head applications where Graflex series tooling is employed. It is suited for production and job-shop environments where boring head inserts are changed regularly and reliable clamping hardware is required to maintain repeatability. The H05-4 driver compatibility makes it straightforward to service in the field without specialized equipment beyond the correct hex key.
Designed for use with Graflex series indexable boring heads requiring hex socket set screws with H05-4 key driver compatibility and insert hardware fitment.
Installation is performed by tooling technicians or machinists familiar with indexable boring head assemblies. Disengage the machine and ensure the spindle is fully stopped before servicing the boring head. Use only the correct H05-4 hex key driver to avoid rounding the socket. Do not overtighten, as set screws in indexable tooling are torqued to manufacturer specifications to avoid insert seat damage.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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