- 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)
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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
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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.
- Ideal for machining radial patterns such as flats, splines, and gear teeth
- Built-in detent mechanism indexes the spindle in 5° increments
- Laser-engraved collar provides 1° reference markings
- Rack gear system allows indexing to virtually any position using simple calculations
- Compatible with many Sherline workholding accessories
- Indexing head and tailstock mounted on a 12" dovetailed bed
- Rack gear for measuring radial movement
- Gear tooth cutter holder
- High-speed steel tool blank
- Faceplate
- 3-jaw and 4-jaw chucks
- Drill chuck
- Centers
- 15 aluminum gears
- Mounting brackets
- Engagement mechanism
- 4.00" (102 mm) handwheel
Slitting Saws
Each saw blade is 2" in diameter with a 1/2" hole. The saw blades come in varying thicknesses and teeth counts. They require the slitting saw holder, which is held in the spindle with a drawbolt that pulls the holder up into the Morse #1 taper.
55° Carbide Insert
While not inexpensive, carbide inserts offer excellent value—each insert provides four cutting edges, significantly reducing the need for frequent sharpening and saving valuable time.
Carbide cutters perform well on hard-to-machine materials like cold-rolled steel and are also effective on aluminum, brass, and leaded steels, offering exceptional durability. However, for the finest finishes on softer metals, a well-sharpened high-speed steel tool still delivers superior results.
This is the 10-pack of replacement carbide inserts for the following tool holders:
55° Carbide Insert-10 Pack
While not inexpensive, carbide inserts offer excellent value—each insert provides four cutting edges, significantly reducing the need for frequent sharpening and saving valuable time.
Carbide cutters perform well on hard-to-machine materials like cold-rolled steel and are also effective on aluminum, brass, and leaded steels, offering exceptional durability. However, for the finest finishes on softer metals, a well-sharpened high-speed steel tool still delivers superior results.
This is the 10-pack of replacement carbide inserts for the following tool holders:
80° Carbide Insert
While carbide inserts may have a higher upfront cost, they offer excellent value by providing four usable cutting edges per insert and significantly reducing time spent on tool sharpening.
Carbide cutters excel at machining difficult materials such as cold-rolled steel, stainless steel, and bronze, delivering consistent performance and long tool life. They are also compatible with aluminum, brass, and leaded steels—though for these softer materials, a finely honed high-speed steel tool may still yield the best surface finish.
This is the 10-pack of replacement carbide inserts for the following tool holders:
80° Carbide Insert-10 Pack
While carbide inserts may have a higher upfront cost, they offer excellent value by providing four usable cutting edges per insert and significantly reducing time spent on tool sharpening.
Carbide cutters excel at machining difficult materials such as cold-rolled steel, stainless steel, and bronze, delivering consistent performance and long tool life. They are also compatible with aluminum, brass, and leaded steels—though for these softer materials, a finely honed high-speed steel tool may still yield the best surface finish.
This is the 10-pack of replacement carbide inserts for the following tool holders:
Carbide Inserts (thread, groove)
These Carbide inserts are used in the Insert Tool Holder and are used for either threading or grooving.
Thread Cutting
1/4″ 3-Flute End Mill Set
3/8″ Double-Ended End Mill Sets
These precision 3/8″ shank double-ended end mill sets are a versatile and budget-friendly choice for general milling work. Double-ended cutters give you two cutting ends in one tool, doubling your productivity and value. Each cutter features a flat section on the shank for secure clamping in a 3/8″ end mill holder.
Both sets include six popular diameters: 1/8″, 5/32″, 3/16″, 1/4″, 5/16″ and 3/8″.
7400 – 2-Flute Set
Ideal for softer materials such as aluminum, these 2-flute cutters resist clogging and provide smooth chip evacuation.
7401 – 4-Flute Set
With four cutting edges, this set offers increased cutting contact and is better suited for harder materials like steel.
Each set includes a wooden storage block to protect your cutters when not in use
CAUTION: Unlike a drill bit that looks similar, end mills are sharpened on the edges as well as the tip. These sharp edges demand a lot of respect when being handled and used! Also, to keep them sharp, store them in the block provided or individually protected in your toolbox.
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:
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.
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.
2″ End Mill Holder Style Fixture
Lathe Tool Height Gauge
Spur Driver
The spur driver is used in the headstock to drive wood when turning between centers, rather than using the 3-jaw chuck. The body has a #1 Morse taper. It has a center point and four “teeth” that bite into the … Continued
Indexing Attachment
Machining operations often require cutting features in a radial pattern rather than in a straight line. Common examples include gear teeth, splines, and flats on nuts. The Sherline Indexing Attachment provides an economical and highly accurate way to rotate and position a workpiece for machining these types of features.
Features & Benefits
Included Components
Spindle Compatibility
The indexing head uses a spindle with a #1 Morse taper and 3/4"-16 male thread, identical to Sherline lathe and mill spindles. This allows the use of common Sherline accessories, including:
Precision Indexing Capability
For positions beyond the standard 5° detents, the rack gear converts spindle rotation into measurable linear travel. This movement can be measured with the depth rod of a Vernier caliper, allowing extremely accurate indexing to an infinite number of positions.
Mounting & Use
The indexing attachment can be mounted directly to the table of a Sherline milling machine. The indexing head may also be used independently in a horizontal position similar to a rotary table.
Note: Use on a Sherline lathe with the vertical milling column is not recommended. However, it may be possible with shims installed to raise the unit high enough to clear the crosslide handwheel.
Thread-Cutting Attachment
A key advantage of owning a lathe is the ability to machine threads. While taps and dies can cut many threads, acquiring a comprehensive tap and die set to cover all non-standard thread sizes can be costly. Sherline provides a unique and versatile thread-cutting attachment for its lathe. This affordable attachment enables you to machine thirty-six different unified thread pitches (ranging from 80 to 5 threads per inch) and twenty-eight different metric thread pitches (ranging from .25 to 2.0 mm). It also allows for both left-hand and right-hand threading. A 60° carbide cutting tool is included, but you can also grind a standard high-speed steel tool to cut various thread forms at any pitch diameter. This versatility allows you to machine both standard and non-standard inside or outside threads, as long as they fall within the lathe’s size limitations.
Note: Ensure you lubricate the gears with light oil before using the threading attachment.
The attachment includes:
Thread cutting on the Sherline lathe is accomplished by gearing the spindle to the leadscrew. As the spindle is rotated using the handwheel mounted on the headstock spindle, the tool advances according to the gear ratio. Once the tool reaches the end of its movement, simply stop cranking, reverse the tool, and turn the spindle in the opposite direction until the tool passes its starting point. Reset the tool, and you’re ready for the next pass. It’s as straightforward as tapping! By using the supplied 127-tooth gear, you can cut true metric threads on an inch lathe or true inch threads on a metric lathe.
⚠️ Note: The thread-cutting attachment is not compatible with the 3C Headstock.
Adapting the Leadscrew Engagement Lever for Use with Digital Readout (DRO)
If you plan to use the leadscrew engagement lever with the Thread Cutting Attachment in conjunction with a Digital Readout (DRO), you will need to equip your lathe with the DRO sliding shaft (sold separately) for proper leadscrew engagement.Gear Selection Calculator
The Sherline Thread Attachment Calculator, created by Joo Beng Koh of Singapore, automates gear selection based on your desired thread count. Originally shared on the Sherline Lathe & Mill Facebook Group, Joo Beng graciously allowed us to feature this tool on our website. The calculator simplifies the setup process, particularly for users who frequently change their thread specifications.
For instructions, select the desired parameters in the light yellow fields, and the corresponding gear selections will appear in the green boxes. An accompanying image shows the correct gear placement along with step-by-step guidance for installation. This tool has greatly improved the process for Joo Beng and can help others as well.
Click here for Joo Beng Koh's Sherline Thread Attachment Calculator.
More Calculators
Visit our Calculators page to explore additional tools for gear tooth and thread calculations, including calculators for thread counts, helical gears, conversions, and more.
Lathe Headstock Hard Stop Kit
Vertical Mill Vinyl Dust Covers
