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Your cart is empty.Helical Insert, Free Running, 304 Stainless Steel, Internal Thread Size 5/16-18, Thread Type UNC, Thread Direction Right Hand, Length 0.469 In, Free Coil Dia. 0.390 In, Tap Sizes 5/16-18 STI, Aluminum Drill Size Q, Tensile Strength 200, 000 to 250, 000 PSI, Rockwell Hardness C43-C50, For Metal, Package Quantity 12
Stephen J. Walmsley
2025-09-05 09:43:19
Repairs threads to better than new. Drilling out the broken bolt for an old industrial engine is the hard work.
R.L.
2025-08-21 14:20:14
Lifesavers. I have some bead lock wheels with a couple of threads that were stripped out on the locking ring. Installed a few Helicoil’s and the rest is history. Back n the race!!
Kindle Customer
2025-08-19 18:43:53
Product was as described and received when promised.
Rancher
2025-08-18 12:58:22
Nice for repairs
Kim Vermillon
2025-07-12 17:58:47
Well made product at a fair price.
dano
2025-06-12 15:49:31
these are one of the best and most useful thing you can have in your tool box if you work with Alluminum you just about have to keep them in all sizes.
Customer
2025-01-16 09:35:53
works perfectly
Kenneth Dickson
2024-11-28 16:21:02
Excellent service and prompt shipping ! The item was exactly as expected. Will buy this product again.
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