Description
Technical Overview
The 40 Series End Fastener Type B – Concealed Whistle Connector features a zinc-plated steel construction that actively establishes high-strength, hidden joints between aluminium extrusion profiles. Because engineers designed this fastener specifically for 40 Series profiles, it effectively provides a seamless, concealed connection. Consequently, this internal design completely eliminates the need for bulky external corner brackets, thereby keeping your build clean and professional.
To initiate the assembly, a technician drills an access hole into the profile so that the connector insert can drop directly into place. As a result, the fastener interlocks securely without requiring any tapping of the extrusion channel. Furthermore, the precision-machined design ensures that the connection maintains perfect structural integrity and alignment throughout the entire assembly process.
Applications
Builders and engineers primarily utilize the 40 Series End Fastener Type B when constructing industrial automation frameworks, CNC machine builds, and heavy-duty structural framing. For this reason, the component serves as a standard choice for conveyor and robotic assemblies that require robust internal hardware. Moreover, by utilizing a completely concealed footprint, this fastener ensures that your assemblies maintain clean lines with no visible external brackets.
In addition to these heavy industrial setups, typical use cases include the straightforward assembly of custom mechanical designs, tables, benches, and storage cabinets. Ultimately, this component yields the most reliable, high-strength results whenever a project requires a durable, hidden 90-degree joint between intersecting 40 Series aluminium extrusion profiles.
Technical Specifications
40 Series End Fastener Type B Technical Drawings:
| A | B | C | D | E | F | SHCS | kg |
| 27mm | 40mm | 14mm | 8mm | 13.8 | 8.8 | M6x35 | 0.07 |
Maker Store Tips and Tricks
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Ensure that you drill the profile access hole to the exact specified diameter and depth before inserting the connector body.
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Align the interlocking extrusion faces completely flush before tightening the internal fastener to achieve correct joint squareness.
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Periodically verify fastener preload in structural frames subjected to continuous cyclic loading or machine vibration.
Products to Pair with End Fastener Type B – 40 Series
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T-Slot 40 x 40mm – 40 Series – HEAVY Duty – Silver
Price range: $27.57 through $92.88 Inc. GST Select options This product has multiple variants. The options may be chosen on the product page -

T-Slot 40 x 80mm – 40 Series – HEAVY Duty – Silver
Price range: $72.74 through $225.21 Inc. GST Select options This product has multiple variants. The options may be chosen on the product page
What makes T-Slots such an easy assembly task?
Building frames out of T-Slot extrusions is easy because they eliminate the need for specialised tools or welding, simplifying the assembly process. Building frames using T-Slot Linear Rail will require;
- 40 Series T-Slot Extrusions: These are the main structural components, usually made of aluminium, with slots along their lengths that allow you to easily connect various parts and accessories.
- 40 Series Brackets and Connectors: These are specialised components designed to fit into the T-Slot extrusions and secure them together at various angles. They include corner brackets, T-nuts, L-shaped brackets, and other connectors.
- Fasteners: Bolts, screws, and nuts are required to attach the brackets and connectors to the T-Slot extrusions securely.
- Tools: Basic hand tools like wrenches, Allen keys (hex keys), and screwdrivers are necessary for assembly. Additionally, a saw may be needed to cut the T-Slot extrusions to your desired lengths.
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