Carbide Inserts (thread, groove)
These Carbide inserts are used in the Insert Tool Holder and are used for either threading or grooving.
Thread Cutting
- 60° threading insert for cutting outside threads (P/N 22675)
- .031" insert (P/N 2269)
- .062" insert (P/N 2270)
- .094" insert (P/N 22694)
- .125" insert (P/N 22695)
- .031" radius insert (P/N 22692)
- .062" radius insert (P/N 22693)
1/4″ 3-Flute End Mill Set
3-piece Center Drill Set
Center drills are essential for accurately drilling starter holes in the ends of workpieces, particularly when mounting stock between centers on a lathe. Each drill creates a small pilot hole followed by a 60° countersink, which provides a seating surface for the 60° point of the lathe center.
In milling applications, center drills are commonly used to start holes precisely. The exact hole location can be dialed in using the mill’s calibrated handwheels, and the center drill ensures the hole begins accurately without drifting.
This set includes three double-ended, high-speed steel (HSS) center drills:
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#1 drill: 1/8" shank
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#2 drill: 3/16" shank
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#3 drill: 1/4" shank
The larger shank diameter of a center drill ensures the tip remains centered, reducing the risk of the drill "walking" as the hole is started. After the center drill has established the starter hole, it is replaced with a standard drill bit to complete the hole to the desired diameter.
⚠️ CAUTION: Always use a suitable cutting lubricant and back the drill out frequently during use. This prevents the delicate tip from overheating or breaking off.
Boring Tools
These high-speed steel cutting tools are designed specifically for use with the Sherline boring head and feature a 3/8" (9.5 mm) diameter shank.
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P/N 3061 is suited for holes with a minimum diameter of 1/4" (6.4 mm) and a maximum cutting depth of 0.600" (15.2 mm).
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P/N 3063 works with a minimum hole diameter of 5/16" (7.9 mm) and provides up to 1.00" (25 mm) of cutting depth.
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P/N 3064 also fits a 5/16" (7.9 mm) minimum hole but offers an extended 1.5" (38.1 mm) reach.
If needed, the tools can be ground to fit smaller hole diameters. They may also be used in the 3/8" round-hole tool post on a lathe for boring operations. Each tool includes a ground flat on the shank to provide a secure surface for the boring head setscrew.
