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The JERGENS 215-069523 is a thin wall keylocking thread locking insert designed to provide a permanent, load-bearing internal thread in parent materials that are too thin or soft to hold a standard thread reliably. The insert features a 5/16-24 internal thread and a 7/16-14 external thread, with an overall length of 0.43 inches. Constructed from 303 stainless steel with a passivated finish, it resists corrosion and withstands demanding service environments. Machinists, maintenance technicians, and assembly professionals install these inserts to restore or reinforce threaded holes in metal components across industrial and mechanical applications.
This insert is suited for applications where thin wall conditions limit the use of standard-size inserts. The keylocking design locks the insert into the parent material, preventing rotation under load. Typical use cases include precision machined assemblies, structural repair of stripped threads, and original equipment manufacturing where space constraints require a compact thread reinforcement solution. The passivated stainless steel construction is appropriate for environments exposed to moisture, mild chemicals, or elevated hygiene requirements.
Designed as an OEM-style replacement or new-installation thread locking insert for parent materials drilled and tapped to accept a 7/16-14 external thread in thin wall keylocking applications.
Installation of keylocking thread inserts is typically performed by machinists or maintenance technicians using a dedicated installation tool. The parent material must be drilled and tapped to the correct external thread specification before the insert is driven in. Power down or de-energize any equipment before performing thread repair on in-service assemblies. Keys are staked after installation to lock the insert permanently in place and should not be disturbed once set.
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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