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Helicoil 5/16-18 thread repair insert pack R1185-5

Helicoil

Helicoil 5/16-18 Insert Pack R1185-5 wheel care

SKU CH-B3GB-8CH64

Pack of 16 high-strength steel thread inserts in 5/16-18 size for durable wheel repairs

  • High-strength chrome-molybdenum steel resists impact-tool stress
  • Pressure redirected to thicker socket wall boosts durability
  • One-piece construction eliminates weak joints under load
  • High-torque drive profile reduces fastener-corner wear
  • Lifetime warranty backs every 5/16-18 insert in the pack

Helicoil 5/16-18 Insert Pack

The Helicoil 5/16-18 Insert Pack R1185-5 provides thread repair inserts made from chrome-molybdenum steel. It suits automotive technicians and DIY owners fixing stripped or damaged threads in wheel assemblies and similar components. Each insert is engineered to restore original fastener strength reliably.

High-strength steel handles impact torque

The chrome-molybdenum construction transfers pressure from the thinner socket wall toward the thicker section for increased strength. One-piece design and high-torque drives limit wear on fastener corners and the socket itself. This balance of strength and durability meets industrial specifications for impact-tool use.

Restores threads without oversized hardware

Inserts fit existing 5/16-18 threads so you avoid drilling larger holes or switching fastener sizes. The pack delivers multiple inserts for repeated repairs across a vehicle fleet or workshop. It frees you from sourcing oversized bolts or specialized replacement parts for every stripped thread.

How it compares

Measured against everything we stock in Wheel & Tire Care Accessories, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 92% of the 300 comparable items (median $42.49).

Specifications

Product
Brand nameHELICOIL

Questions about this item

How do I install the 5/16-18 Helicoil inserts from the R1185 pack, and what step do people often get wrong?

Drill the damaged hole with the correct tap drill size, tap fresh 5/16-18 threads using the supplied tap, then wind the insert in with the installation tool until it sits slightly below the surface; the step most often missed is breaking off the tang with the tool after installation so the bolt can seat fully.

What maintenance or replacement will the R1185 Helicoil inserts need later?

The chrome-molybdenum steel inserts are permanent thread repairs and need no scheduled replacement; simply check bolt torque at normal service intervals and re-torque if the joint has seen heavy impact loading.

What limit appears first when the repaired 5/16-18 threads are used under sustained high torque?

The limiting factor is the parent material surrounding the insert — if the base metal yields or stretches under prolonged 16 18 loading, the repair can loosen even though the insert itself remains intact.

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