Mandrels
Single Mandrel – Bollhoff Brand
(other brands may vary in style and look)
Anvils
Single Mandrel – Bollhoff Brand
(other brands may vary in style and look)
Genuine Replacement Mandrels are an essential accessory for maintaining the performance, accuracy, and reliability of your rivet nut installation tool. Designed with a black threaded tip, mandrels provide the connection point where the rivet nut threads onto the mandrel and connects into the pneumatic, battery, or manual tool before installation. Mandrels work hand-in-hand with another accessory, called anvils (see Anvil section for more information), for rivet nut installation.
Because mandrels are thread-size specific, it is important to use the correct mandrel for the rivet nut size being installed. Proper fit helps ensure consistent installations and reduces the risk of thread damage or premature wear.
Bollhoff Mandrels are crafted from tool hardened steel and produced to exacting machining tolerances to ensure high quality, repeatable installations. When used in a proper production environment, they can provide thousands of successful installs.
In addition to genuine Böllhoff mandrels, we stock replacement mandrels for many other rivet nut tool brands. Designs and dimensions vary by manufacturer, so appearance may differ depending on the application.
Genuine Replacement Anvils are an essential accessory for maintaining the performance, accuracy, and reliability of your rivet nut installation tool. The anvil is the black component located at the front of the tool, it slides over the mandrel. The anvil provides the contact surface against which the rivet nut head presses during the setting process. Together with the mandrel, the anvil helps take on immense install pressures necessary to create the bulge on the installed rivet nut.
Anvils work together with mandrels (see Mandrel section for more information). Because mandrels and anvils are designed for specific rivet nut sizes and styles, proper selection is important. For example, installing an M6 threaded rivet nut requires both an M6 mandrel and an M6 anvil.
Photo displays a Mandrel paired with an Anvil
Mandrels and anvils are considered consumable components and should be inspected regularly as part of routine tool maintenance. may require regular replacement as part of normal tool maintenance. During the installation process, the mandrel threads repeatedly engage with the rivet nut threads and over time the mandrel will wear out, usually after a few thousand installs in a good production environment. The anvil supports the rivet nut head and typically can last 50,000+ installs before needing replacement, depending on your operating environment. This metal-to-metal contact naturally causes wear therefore these are considered consumables that you can purchase directly from us, Rivet Nut USA™, a division of Cardinal Components, Inc.
Signs That You Need to Order Replacements:
- Damaged or worn mandrel threads
- Increased difficulty threading rivet nuts onto the mandrel
- Visible wear, damage, or deformation on the anvil face
- Reduced installation consistency, such as, the rivet nut bulge does not fully form or the rivet nut threads are getting striped.
Mandrels and anvils are required for all pneumatic, battery-operated, and manual installation tools, including these Rivet Nut USA™ models:
Pneumatic Tools: 4107; 4080; 4090; 6703; 9043
Battery-operated Tools: B4090; B4107; B4109
Manual Tools: 140-2000; M2007/2070; c3600; c722; c845; c1000
Regular inspection and timely replacement help maintain optimal tool performance and installation quality. The best option is to order a backup supply for each thread size.
At Rivet Nut USA™, we recommend having these reordering protocols in place:
- Establish reorder points based on usage rates and production environment, installer, or material.
- Estimated replacement cycles for mandrels are about 3,000-5,000 installs.
- Estimated replacement cycles for anvils are about 50,000 installs.
- Replace worn mandrels and anvils before performance is affected.
- Keep safety stock on hand for critical operations
Having replacement mandrels and anvils readily available helps keep your fastening operation running efficiently and minimizes costly delays.
Available for Multiple Thread Sizes
Each mandrel is designed for a specific rivet nut thread size. Be sure to select the appropriate replacement mandrel for your application and tool configuration.
Below are listed some common thread sizes in both unified and metric sizes. Available sizes vary by tool model, consult our sales expert on what size is best for your installation tool and application.
Unified (Imperial) Sizes
- 4-40”
- 6-32”
- 8-32”
- 10-24”
- 10-32”
- 1/4-20”
- 1/4-28”
- 5/16-18”
- 5/16-24”
- 3/8-16”
- 3/8-24”
- 1/2-13”
- 1/2-20”
Metric (European) Sizes
- M3
- M4
- M5
- M6
- M8
- M10
- M12
Why Buy Your Replacement Mandrels and Anvils from Rivet Nut USA™?
- Genuine replacement components
- Thread-size-specific fit and performance
- Fast shipping on in-stock items
- Expert support for tool and accessory selection
- Helps maximize tool life and installation consistency
Contact Rivet Nut USA™, a division of Cardinal Components, Inc., to order replacement mandrels and anvils today to keep your rivet nut tools operating at peak performance and avoid unnecessary production interruptions.
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