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): 3/8 and 1-1/16

C-1 Special Diesel Ductile Iron Repair Plug

<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 

C, C-1, C-1 Special HSS Tap

C, C-1, C-1 Special HSS Tapered Reamer

Engine Cold Crack Repair; Drill size (inches): 3/8 and 1-1/16