Plug type

Drill size (inches)

Irontite

25/64

7/16

15/32

11/64

13/64

5/16

11/32

9/16

23/32

51/64

9/64

1-1/32

1-1/16

1-1/4

1-5/16

Engine Cold Crack Repair, Drill size (inches): #25 and 1-1/16

<p>H-Oversize HSS Tapered Tap. HO w/ Pilot Hole. High-speed steel tapered tap for use with HO Ductile Iron Plugs.</p>

The [407-5311-41] H-Oversize HSS Tapered Tap ("HO w/ Pilot Hole") is an HSS tapered tap designed for threading holes to accept HO Ductile Iron Plugs (452-2611-40) in casting repair. Use with tapping…

H-Oversize HSS Tapered Tap 

<p>Repair cracks in cast metal components easily and effectively with TPC Tapered Threadless Pins. Ideal for cold casting repair in tight spaces, these pins provide a strong, durable, and stress-free solution without the risks of welding. Also used to prevent spun bearings in high-performance applications.</p>

Repair cracked castings and prevent spun bearings with TPC Tapered Threadless Pins. A cold repair solution for engine blocks, cylinder heads, and more. Easy installation, strong & durable.

TPC Automotive Ductile Iron Pins, Box of 100

Engine Cold Crack Repair; Drill size (inches): #25 and 1-1/16