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Fifteen steel helical thread inserts in a pack

MIDWEST FASTENER CORP

MIDWEST FASTENER CORP 76802 Helical Insert 1/4"-20 Steel 15 PK

SKU CH-5CVD-E7174

Steel helical inserts repair stripped 1/4"-20 threads in a 15-piece pack

  • Product typeThreaded Inserts
  • Repairs stripped threads with steel helical inserts
  • 15-pack supplies multiple replacements for 1/4"-20 threads
  • Steel construction resists wear in softer base materials
  • Eliminates separate tapping operation when moulding threads
  • New hardware ready for automotive and general repairs

Thread Repair Insert Kit

This kit supplies fifteen helical inserts sized for 1/4"-20 threads. Each insert is made from steel to restore damaged threads in softer materials such as aluminium or plastic. Mechanics and fabricators use them to salvage stripped holes without replacing the entire component.

Installed Thread Durability

Once installed, the steel coil distributes load across a larger surface area than the original tapped hole. This reduces the risk of pull-out or stripping when the fastener is tightened and retightened during repeated maintenance cycles. The repair holds under normal service vibration and thermal cycling.

Fifteen Piece Quantity

The pack contains exactly fifteen inserts, which determines how many holes can be repaired in a single purchase. Shops planning multiple repairs or keeping spares for future jobs should verify this count against their expected workload. Buyers needing a larger assortment will require additional packs.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 80% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameMIDWEST FASTENER
Product typeThreaded Inserts

Questions about this item

Will the 15-pack of 1/4"-20 steel inserts handle continuous vibration in an engine block?

The steel construction resists vibration and heat cycling typical of automotive use, and the helical coils distribute load across multiple threads to prevent loosening during all-day operation.

What tap and installation tool do I need before starting the repair?

You need a 1/4"-20 STI tap and a matching helical-insert installation tool; the inserts themselves are the only components supplied in the 15-count package.

Can these inserts replace the original threads in an older aluminum intake manifold?

Yes, the 1/4"-20 steel coils create stronger threads in soft aluminum, restoring the original bolt pattern without changing fastener size or pitch.

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