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The HELI-COIL T1185-06C138S is a free-running, tangless wire thread insert designed to create or restore strong, wear-resistant 6-32 UNC threads in a parent material. Constructed from 304 stainless steel, it delivers corrosion resistance and durability in demanding service environments. The insert measures 0.138 inches overall length and carries a 1D length-to-diameter ratio with 2-3/4 free coils. The tangless design eliminates the tang-removal step after installation, reducing labor time and preventing debris contamination in sensitive assemblies. These inserts are installed by licensed machinists, maintenance technicians, and trade professionals performing thread repair or original equipment assembly.
Free-running inserts like the T1185-06C138S are used where a fastener must thread in and out freely without locking - typical in high-cycle applications, precision equipment, light industrial assemblies, and field repair work. The 6-32 UNC thread is common in electrical enclosures, control panels, HVAC equipment frames, and small mechanical assemblies. The 304 stainless steel construction makes this insert suitable for environments with moisture exposure or mild chemical contact. This SKU is packaged in a quantity of 1000 inserts, making it appropriate for production runs or high-volume service operations.
Designed as an OEM-style free-running thread insert for use in any parent material tapped to the standard HELI-COIL 6-32 UNC insert tap specification.
Installation requires a properly sized HELI-COIL tap to prepare the parent bore before insert placement. A compatible tangless installation tool is required - do not attempt installation with standard insertion tools designed for tanged inserts. Ensure the parent material is securely fixtured and the bore is clean and free of chips or debris before driving the insert. Always follow applicable equipment manufacturer service procedures and torque specifications when reassembling fasteners into installed inserts.
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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