Introduction
The NEXTACK NT300 heavy-duty hand riveter is engineered for efficient and reliable riveting tasks. This tool is designed to work with large diameter blind rivets, accommodating sizes up to 6.4mm (1/4 inch). It is suitable for a wide range of applications, from general DIY projects and home decoration to specialized metalwork, gutter installation, and vehicle modifications for off-road vehicles, RVs, vans, and kayaks.
The NT300 kit provides a comprehensive solution, including the professional hand riveter, 350 assorted aluminum rivets, and 5 interchangeable nosepieces, ensuring you have the right tools for various riveting needs.
Product Features
- 1/4 inch Riveting Capacity: Designed to handle blind rivets up to 6.4mm (1/4 inch) with ease.
- Ergonomic Long Handles: Reinforced handles maximize leverage, reducing effort during operation.
- Modular Detachable Design: Allows for tool-free nosepiece changes, disassembly, and maintenance.
- Integrated Mandrel Collection Bottle: Safely collects used rivet mandrels, keeping your workspace clean.
- Robust and Durable Construction: Features cold-formed, heat-treated carbon steel spring handles and a high-strength aluminum alloy housing for extended lifespan.
- Versatile Nosepieces: Includes 5 nosepiece sizes: 6.4mm (1/4"), 4.8mm (3/16"), 4.0mm (5/32"), 3.2mm (1/8"), and 2.4mm (3/32").
- Assorted Rivet Kit: Comes with 350 aluminum rivets in 8 assorted sizes, organized in a compartmentalized box.
Package Contents
The NEXTACK NT300 Rivet Gun Kit includes the following items:
- 1 x NEXTACK NT300 Heavy Duty Hand Riveter
- 5 x Interchangeable Nosepieces (2.4mm, 3.2mm, 4.0mm, 4.8mm, 6.4mm)
- 1 x Mandrel Collection Bottle (pre-installed)
- 350 x Assorted Aluminum Rivets (8 sizes)
- 1 x Compartmentalized Rivet Storage Box

Safety Information
Always observe the following safety precautions when using the NEXTACK NT300 Rivet Gun:
- Wear appropriate personal protective equipment (PPE), including safety glasses, to protect against flying debris.
- Ensure the workpiece is securely clamped or held before riveting.
- Do not use the riveter for purposes other than its intended use.
- Keep hands and fingers clear of the riveter jaws and moving parts during operation.
- Store the tool in a dry, secure place, out of reach of children.
- Inspect the tool for any damage before each use. Do not use a damaged tool.
Setup
1. Selecting the Correct Nosepiece
Choose a nosepiece that matches the diameter of the rivet you intend to use. The kit includes five nosepiece sizes: 2.4mm (3/32"), 3.2mm (1/8"), 4.0mm (5/32"), 4.8mm (3/16"), and 6.4mm (1/4").

2. Changing Nosepieces
- Unscrew the currently installed nosepiece from the riveter head.
- Select the appropriate nosepiece for your rivet size.
- Screw the new nosepiece firmly into the riveter head until it is secure. No tools are required for this process.

3. Loading a Rivet
Insert the rivet mandrel into the selected nosepiece until the rivet head rests against the nosepiece.
Operating Instructions
- Prepare the Workpiece: Drill a hole in the materials to be joined that matches the diameter of the rivet body. Ensure the hole is clean and free of burrs.
- Insert the Rivet: Place the rivet, with its mandrel loaded into the riveter, through the prepared holes in the materials.
- Position the Riveter: Press the nosepiece firmly against the surface of the material.
- Operate the Handles: Squeeze the riveter handles together with a steady, firm motion. The tool will pull the rivet mandrel, causing the rivet body to expand and form a secure joint. Continue squeezing until the mandrel snaps off.
- Release and Repeat: Release the handles. The broken mandrel will be collected in the integrated bottle. If necessary, repeat the process for additional rivets.


Maintenance
1. Cleaning the Mandrel Collection Bottle
The integrated collection bottle gathers broken rivet mandrels. Regularly unscrew the bottle from the riveter head and empty its contents into a suitable waste receptacle. Reattach the bottle securely after emptying.

2. General Cleaning and Storage
- Wipe down the riveter with a clean, dry cloth after each use to remove any dust or debris.
- Periodically apply a light oil to the pivot points and moving parts to ensure smooth operation.
- Store the riveter and its accessories in the provided storage box in a dry environment to prevent rust and damage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Rivet mandrel does not break off. | Insufficient force applied; incorrect nosepiece size; rivet material too hard for tool. | Apply more force to the handles; ensure nosepiece matches rivet diameter; verify rivet material is compatible with tool's capacity. |
| Rivet does not set properly (loose joint). | Incorrect rivet length for material thickness; hole drilled too large. | Use a rivet with appropriate grip range for material thickness; ensure drilled hole matches rivet diameter. |
| Mandrel jams in the nosepiece. | Debris in nosepiece; worn nosepiece. | Clean the nosepiece thoroughly; replace the nosepiece if it is worn or damaged. |
| Handles are stiff or difficult to operate. | Lack of lubrication; dirt or rust in pivot points. | Apply a light lubricating oil to all moving parts and pivot points. Clean any visible dirt or rust. |
Specifications
| Brand | NEXTACK |
| Model Number | NT300 |
| Rivet Capacity | Up to 6.4mm (1/4 inch) |
| Nosepiece Sizes Included | 2.4mm (3/32"), 3.2mm (1/8"), 4.0mm (5/32"), 4.8mm (3/16"), 6.4mm (1/4") |
| Compatible Rivet Materials | Aluminum, Carbon Steel, Stainless Steel |
| Tool Length | Approximately 13 inches (33 cm) |
| Item Weight | 1.95 Kilograms |
| Construction Material | High-strength aluminum alloy housing, cold-formed heat-treated carbon steel handles |

Warranty and Support
NEXTACK products are manufactured to high-quality standards. For information regarding warranty coverage, please refer to the product packaging or contact NEXTACK customer support directly.
If you encounter any issues or have questions about your NEXTACK NT300 Rivet Gun Kit, please contact our customer support team for assistance. Contact details can typically be found on our official website or product documentation.





