Peerless Industrial Group
Peerless Industrial Group Tire Chains Single Bus & RV V-Bar PK2 QG2821
$67.99
0.00081248BTC
In stock
Helicoil
Helicoil 5521-14 Thread Repair Kit 7/8-9 304 SS 6 Pcs
Repairs 7/8-9 UNC threads in metal using six 304 stainless steel inserts, 1.312 in long, with drill, tap and installation tool
- 304 stainless steel inserts resist corrosion in metal assemblies
- Six inserts sized 7/8-9 UNC by 1.312 in provide multiple thread repairs
- Kit includes 29/32 drill, tap and installation tool for complete workflow
- Free-running design restores damaged threads without locking compounds
Helicoil 5521-14 Thread Repair Kit
This Helicoil 5521-14 kit provides a thread repair solution for 7/8-9 UNC threads in metal components. It contains six 304 stainless steel inserts, each measuring 1.312 inches in length. The package also includes a 29/32 inch high-speed steel drill, a matching tap, and an installation tool for completing the repair.
For damaged 7/8-9 UNC threads in metal
Mechanics and technicians repairing stripped or damaged 7/8-9 UNC threads in metal will find the necessary inserts and tools in this set. The kit is specific to this thread size and pitch, so it does not suit other diameters or thread standards. Users needing different UNC sizes, metric threads, or larger quantities should look at other options.
Highlights
- 304 stainless steel inserts resist corrosion in metal assemblies
- Six inserts sized 7/8-9 UNC by 1.312 in provide multiple thread repairs
- Kit includes 29/32 drill, tap and installation tool for complete workflow
- Free-running design restores damaged threads without locking compounds
Specifications
| Brand | HELICOIL |
|---|
Questions about this item
How do I install the 7/8-9 UNC inserts using the 29/32 drill and tap, and what is the common mistake?
Drill the hole with the 29/32 bit, tap it straight with the supplied HSS tap, then wind the insert in with the installation tool; the step most people get wrong is tapping at an angle, which makes the insert sit crooked.
Will the 304 stainless steel inserts need replacement, and how can I tell?
The 304 stainless inserts resist corrosion in normal metal assemblies, so they rarely need replacing; inspect the threads during routine maintenance and replace an insert only if the coils are visibly damaged or the bolt no longer holds torque.
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