The #2-56 thread repair kit allows for the removal and repair of damaged threads in a tapped hole. They can be replaced by chasing the threads using a thread chaser (a device designed to clean and restore factory threads) or installing an insert that contains new threads of the same size.
2-56 Thread Repair Kit - Helicoil Kit - HD Chasen Co
2-56 UNC x 0.129 in. Right-Hand Helical Threaded Insert Repair Kit
Stainless steel inserts are 50% stronger than the original thread.
12 Pcs 2 - 56 x 1.5D Stainless Steel Helicoil Thread Repair Insert [SN2]
3/4-16 Thread Repair Kit - HD Chasen Co
Orion Motor Tech Helicoil Thread Repair Kit, 1/4-20
Select 2 - 56 to 3/4 Helicoil Thread Repair Kit Spiral Tap Drill
Recoil inserts are made from high strength stainless steel wire, wound to the shape of a spring thread. Check to ensure tap thread matches the bolt.
2-56 RECOIL THREAD REPAIR KIT #33528 HELICOIL TYPE - NEW
DAYUAN 131pcs Helicoil Metric Thread Repair Kit, HSS
Quantity: 12 Drill Size: 3/32 Length: .129 Material: 304 Stainless Steel
#2-56 Helical Threaded Inserts
Thread Repair Insert Kits Jergens Specialty Fasteners
Heli-Coil® Master Thread Repair Kits