Bolts
T-Bolt
The T-bolt is a specialist fastener characterised by its T-shaped head, designed to engage within slotted channels or tracks and secure components without independent rotation. Accurate Fastners manufactures and supplies metric-thread T-bolts, with grades and size ranges confirmed on enquiry.
- Standard
- —
- Grades
- On enquiry
- Size
- On enquiry
- Length
- On enquiry
Verification note: Product image supplied in the repository; this item is not listed in the brochure. Grades and sizes require confirmation.
Overview
What is the T-Bolt?
A T-bolt is a threaded fastener whose head is shaped in a T-profile when viewed from the end, allowing it to be inserted into a corresponding slotted channel or extrusion and then rotated a quarter-turn to lock in position. Unlike conventional hex or socket-head bolts that bear against a flat surface, the T-bolt's head is captured within the slot, distributing the clamping load along the channel walls. This design is commonly found wherever repeated repositioning or linear adjustment is required.
The defining geometric feature is the rectangular or semi-circular head that slides freely along the length of a machined or extruded track but resists pull-out once seated and tensioned. The metric thread shank extends from one face of the head, accepting a standard nut or clamping element on the protruding side of the assembly. Because the head is retained within the track, the operator can make positional adjustments before the nut is tightened, which can simplify assembly and reduce alignment time in multi-component structures.
T-bolts are typically paired with T-nuts, flanged nuts, or purpose-designed clamping elements to complete the fastening system. The metric thread form used on these fasteners conforms to internationally recognised pitch and profile conventions, meaning compatible nuts and threaded accessories are widely available. Accurate Fastners' quality control team performs checks during procurement and at the point of delivery to support consistent dimensional conformance across batches.
In Depth
Product description
Construction and Geometry
A T-bolt consists of two principal features: the T-shaped head and the threaded shank. The head width and height are sized to match the slot dimensions of a specific channel system, ensuring the head beds firmly against the internal shoulders of the track. The shank carries a metric thread whose pitch and diameter must be confirmed at the time of enquiry, as these depend on the application load and channel specification.
The underside of the head is typically flat and machined to bear cleanly against the channel shoulders when the fastener is tensioned. Some configurations incorporate a rounded or radiused neck between head and shank to ease rotation during initial placement. Material finish and surface condition across all faces influence how consistently the fastener seats and transmits load, making raw material quality and machining control relevant throughout the production process.
Functional Behaviour in an Assembly
Once a T-bolt is slid to the desired position within its channel, tightening the mating nut draws the T-head upward against the internal lips of the slot, generating clamping force perpendicular to the track face. The slot walls resist both pull-out and rotation of the head, so the full torque applied to the nut is converted into clamp load rather than being dissipated by head spin. This makes the fastener suitable for assemblies requiring frequent positional adjustment followed by reliable re-clamping.
The joint's load-carrying behaviour depends on the fit between the head and slot, the thread engagement length, and the mechanical properties of the chosen material grade. Correct selection of these variables, along with appropriate tightening practice, helps maintain clamp load over time. Users should consult the channel or extrusion manufacturer's specification alongside the fastener data to confirm that the T-bolt head dimensions are compatible with the intended track profile before ordering.
How T-Bolts Differ from Similar Fasteners
Standard hex bolts and socket-head cap screws bear their clamping load against an external surface, requiring access to both the bolt head and the nut. A T-bolt, by contrast, anchors its head inside the channel so only the nut side requires tool access. This single-sided installation differentiates the T-bolt from most conventional fasteners and is the primary reason it is chosen for framing systems, extrusion-based structures, and adjustable mounting arrangements.
Carriage bolts also have a non-rotating shank feature, but they rely on a square section embedding into a wooden or soft substrate rather than engaging a metal channel. T-nuts are the complementary threaded insert often confused with T-bolts, but T-nuts are the receiving component, not the externally threaded part. Understanding these distinctions helps in specifying the correct fastener family for a given track or slotted-channel system.
Material & Grade
Material and grade information
The material grades available for Accurate Fastners' T-bolts require confirmation with the sales team, as no specific grades are listed in the verified product data. Generally, stainless steel grades such as 202, 304, and 316 are commonly used for fasteners in environments where corrosion resistance is a consideration. Grade 202 is an economy austenitic option, while 304 offers broader corrosion resistance, and 316 incorporates molybdenum for improved resistance in more aggressive conditions.
The appropriate grade for a T-bolt application typically depends on the operating environment, chemical exposure, and mechanical load requirements of the assembly. For food processing or pharmaceutical machinery, higher-grade stainless steel may be considered due to hygiene and cleaning requirements. Customers are encouraged to discuss their environment and load conditions with the Accurate Fastners sales team so that a suitable grade recommendation can be made before an order is placed.
Grades shown are those documented for this product in the Accurate Fastners brochure. General material notes are guidance only; confirm grade selection for your environment.
Technical Data
Technical specifications
| Product type | Bolt – T-Bolt |
|---|---|
| Material | To be confirmed on enquiry |
| Material grade | To be confirmed on enquiry |
| Nominal diameter / size | To be confirmed on enquiry |
| Thread type | Metric |
| Head / form | T-shaped head |
Sizes
Available sizes
Sizes for this product are not documented in our brochure. Please share your required diameter, length and quantity and our team will confirm availability.
Individual sizes within the documented range, thread pitches and lengths are confirmed at quotation stage.
Applications
Industrial applications
Solar Panel Mounting Structures
T-bolts may be used within aluminium extrusion rail systems for solar panel mounting frames, allowing panel clamps to be positioned and repositioned along the rail before final tightening. This suits the solar energy sector Accurate Fastners serves.
LED Lighting Rigs and Fixtures
Adjustable lighting tracks for LED fixtures commonly use T-bolt and channel systems to reposition fittings without dismantling the structure, which can be useful in commercial and industrial LED lighting installations.
Food and Beverage Processing Equipment
Machine guards, conveyor supports, and equipment frames in food processing plants may use T-bolt assemblies within extruded profiles, benefiting from the ability to adjust guarding positions during layout changes.
Pharmaceutical Machinery Frames
Structural frames for pharmaceutical machinery often employ slotted profile systems where T-bolts secure panels, cable trays, and ancillary equipment, allowing layout adjustments as process requirements evolve.
General Industrial Fabrication
T-bolts are widely used in custom fabrication, workholding fixtures, and modular industrial structures where components need to be locked into precise positions along a track during assembly or machining operations.
Featured for: Solar Energy
Features & Selection
Features and selection considerations
Design features
T-Shaped Captive Head
The T-profile head is designed to engage inside a corresponding slotted channel, preventing pull-out and rotation once seated, allowing the nut on the opposite side to be tightened with single-sided tool access.
Metric Thread Shank
The fastener carries a standard metric thread profile, ensuring compatibility with widely available metric nuts, washers, and clamping elements. Specific pitch and diameter details are confirmed at the time of order enquiry.
Positional Adjustability
Because the head slides freely along the channel before tensioning, T-bolts allow linear positioning of attached components without removing the fastener, which can reduce assembly time in adjustable framing systems.
Single-Sided Installation
The captive head design means the fastener requires tool access only at the nut end during tightening, which may simplify installation in confined spaces or where rear access to the joint is restricted.
Quality-Controlled Production
Accurate Fastners' in-house quality control team performs dimensional and material checks during procurement and prior to delivery, supporting batch consistency for customers requiring repeatable fastener performance.
Before you order
Head and Channel Compatibility
Confirm the T-bolt head width and height against the internal slot dimensions of the specific channel or extrusion profile to be used. An incompatible head size may prevent proper seating or allow unwanted movement under load.
Thread Diameter, Pitch, and Length
Specify the required metric thread diameter and pitch, as well as the shank length needed to accommodate the channel wall thickness plus nut engagement. These details must be confirmed with Accurate Fastners at the enquiry stage.
Material Grade Selection
Discuss the operating environment, including exposure to moisture, chemicals, or food-grade cleaning agents, with the sales team so that the most appropriate stainless steel grade can be recommended for the application.
Quantity and Documentation
For large or repeat orders, request batch documentation details when placing an enquiry. Accurate Fastners serves both local and international customers, so lead times and packaging requirements should be discussed at the quotation stage.
FAQs
Frequently asked questions
What is a T-bolt used for?
A T-bolt is used to fasten components to slotted channel systems or extruded profiles. The T-shaped head locks inside the track, allowing the attached part to be positioned along the channel before being secured with a nut on the protruding shank.
Which material grades are available for these T-bolts?
Specific grades are not listed in the current product data and must be confirmed with the Accurate Fastners sales team. Stainless steel options such as 202, 304, or 316 may be available depending on requirement; please enquire directly to receive grade options for your application.
What sizes and thread specifications are offered?
T-bolt sizes and metric thread specifications are confirmed on enquiry, as they depend on the channel system and load requirements of each application. Contact Accurate Fastners with your channel profile dimensions and load details to receive size options.
Do these T-bolts comply with a specific standard?
Accurate Fastners' fastener range is produced in compliance with standards including IS, BS, and DIN. Whether this specific T-bolt conforms to a particular standard should be confirmed with the sales team at the time of enquiry, as this depends on the specification requested.
What mating parts are typically used with a T-bolt?
T-bolts are commonly paired with standard metric hex nuts, flanged nuts, or application-specific clamping elements. The choice of mating component depends on the channel system and the type of component being secured. Your channel or extrusion supplier's documentation is a useful reference for compatible accessories.
How can I request a quotation for T-bolts from Accurate Fastners?
You can request a quotation by submitting the enquiry form on the website, emailing the team at export@accuratefastners.com, or contacting Accurate Fastners via WhatsApp. Please include channel dimensions, required thread size, estimated quantity, and intended application environment to receive an accurate response.
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