Somma Tool Co., Inc.

109 Scott Rd.
Waterbury, CT 06705 US


As Seen In Production Machining

Somma Tool Co. Celebrates 80th Anniversary
In 1939, Gerard J. Somma, a recent arrival from Naples, Italy, saw a growing demand for a local, reliable source of screw machine tooling and decided to take the plunge. He incorporated Somma Tool Co. in his new home state of Connecticut and never looked back. 


Somma Inserts Supply Any Option
Somma Tool is said to supply all the options needed by companies who use form tools. 

Making Chips

The Fundamentals of Chip Control
Having strategies in place for managing chips is an important part of protecting the production process, from tool life to product quality.


Max Bar Mini Shank Toolholders Fit Swiss Machines
Somma’s Max Bar series of mini shank toolholders are designed to fit Swiss machines and can be used for front turning, back turning, cutting off, grooving, and threading, as well as plunge and turn, face grooving, ID grooving, threading and boring.

Somma Tool broach toolholder

Broaching Toolholder Interchangeable with ER Collet Chucks
Eastec 2017: Somma Tool Co. offers a new style of broach toolholder designed to be interchangeable with any style of ER collet chuck.

Somma Tool Acquires Reynolda Cutting Tools Line
The RCT division of Somma will now be the manufacturer of Reynolda’s standard and special dovetail and circular blanks, broaches and flat drill blanks.

Somma Tool Announces the Acquisition of Reynolda Cutting Tools
Somma Tool Company has purchased the RCT line from Reynolda Manufacturing Solutions.

Broaches Prevent Chipping
Somma Tool Co.’s Forte line of broaches are made of the company’s new standard stock material, replacing M2.

Forte Rotary Broaches Offer High Wear Resistance
Somma Tool Company’s line of broaches, called Forte, are said to be made of the toughest broaching material available.

Somma Tool Values Collaboration Among PMPA Members
There is such a high level of collaboration even though the members may be competitors; everyone is willing to give to others.

Another Look at Skiving
Although recognized as one of the oldest and most efficient methods for producing long and slender parts and others on screw machines, skiving is still often avoided because many layout and setup personnel and operators lack sufficient knowledge to successfully apply the process.

Somma's Re-Tapping and Tapping Machines Provide Advantages in Operations
Somma manufactures a re-tapping and tapping machine.

The Basics of Rotary Broaching
This broaching process creates a non-round shape on the inside or outside of a part with a broach tool.

STA Single-Usage Insert Form Tool System Requires No Re-Sharpening
The STA system from Somma is a single-usage insert form tool system that was designed for those who prefer not to have to re-sharpen their inserts or dovetails, and instead want to simply replace the insert after it is worn.

Somma Solid Carbide T-Type Blades Offer Long Wear
Somma’s solid carbide T-type cut-off blades are made of C2 grade carbide.

Somma’s Insert Form Tool System Boosts Efficiency
Somma Tool’s resharpenable quick-change insert form tool system will boost the efficiency of single- and multi-spindle screw machines, the company says.

Eric Somma, President
We will mostly be talking about two important products at PMTS this year.

collet chuck-style broach toolholders

Collet Chuck-Style Broach Toolholders
The new collet chuck-style broach toolholders are said to be versatile because they use ER-style collets, which are designed to reduce the three-screw method of centering the HSS broach in the broach toolholder. The ER-style collet will hold virtually any diameter shank broach tool in the holder within the range of the collet.  A built-in stop screw allows the operator to adjust for different length broaches and to compensate for different lengths on re-sharpened broaches.

Double Angle

The Forgotten Art Of Skiving
Here's a look at one of the oldest and most efficient methods of screw machine production for parts that are long and slender, with close-diameter tolerances and finishes, or parts that require truly spherical radii.

bar puller

Combination Bar Puller Cutoff Tool
The combination bar puller cutoff tool for CNC from Somma Tool Company saves a turret position because it is a bar puller and cutoff tool in one unit. Cycle time is reduced because there is a no need to index between cutoff and pulling operations. A single screw adjustment allows the jaws to be set up and adjusted

Combination Bar Puller Cut-Off Tool For CNC
Somma Tool's combination bar puller cutoff tool for CNC. This tool saves a turret position because it is a bar puller and cutoff tooll in one unit.

Product Categories of Somma Tool Co., Inc.

Arbors (for Cutters)
Bar Feed Mechanisms
Broaching Attachments
Broaching Tools
Burnishing Tools (Roller)
Cam Blanks
Chamfering Tools
Chuck Jaws & Collets
Chucks, Collet Type (for Workholding)
Collets for Toolholding
Collets for Workholding
Cut-Off Tools/Attachments
Deburring Machines
Deburring Tools (Machine Tool Spindle-Mounted)
Drill Bushings
Drilling Attachments
Drilling Heads/Attachments
Form Tools
Inserts, Indexable (Carbide, etc.) & Tool Inserts
Knurling Tools
Reaming Attachments
Recessing Attachments
Shaving Tools
Software, Tool Design
Tap Drivers & Attachments
Tapping Attachments
Threading Tools
Tool Blanks
Tool Bushings & Adaptors Attachments
Tooling Systems, Modular and/or Quick-Change
Turning Attachments

Trade Names