Longze Heavy-Duty T-Bolts, also known as Hammer Head Bolts, are high-performance mounting solutions engineered specifically for aluminum extrusion profiles. Manufactured to DIN 975 and global industrial standards, these fasteners feature a specialized rectangular head that allows for seamless insertion into T-slots. Once inserted and rotated 90 degrees, they lock securely against the profile's internal ridges, providing a robust, high-strength threaded stud for mounting machinery, brackets, and industrial panels.
Designed for efficiency and structural integrity, our T-Bolts eliminate the need to slide fasteners from the ends of a profile, enabling rear-loading installation at any point. Whether you are building CNC frames, solar racking systems, or automated workstations, Longze T-Bolts offer superior clamping force and vibration resistance, ensuring your assembly remains stable under the most demanding industrial loads.
Detailed Parameters
| Technical Standard | DIN 975 / Custom Industrial Specs | Profile Compatibility | 20 / 30 / 40 / 45 / 50 Series |
|---|---|---|---|
| Metric Size Range | M5 to M16 | Inch Size Range | 1/4" to 1/2" |
| Material Grades | Alloy Steel 8.8, 10.9 / Stainless A2, A4 | Thread Type | Full Thread (Coarse) |
| Max Tensile Strength | Up to 1040 MPa (Grade 10.9) | Dimensional Tolerance | Within ± 0.1 mm |
| Surface Options | Zinc, Nickel, Black Oxide, Passivated | Loading Type | Rear-Loading / Drop-In |
Key Advantages
High Clamping Force
The wide T-head provides a massive contact area, preventing pull-out or profile damage under heavy industrial loads.
Rear-Loading Efficiency
Drop fasteners into the slot at any point, eliminating time-consuming sliding from the extrusion ends.
Self-Aligning Lock
Hammer head automatically rotates into locking position as the nut tightens, ensuring perpendicular connections.
Industrial Grade Steel
Available in Grade 8.8 and 10.9 for CNC frames and Grade A4 stainless for marine environments.
Precision Threading
Rolled threads ensure smooth nut engagement and high resistance to stripping across multiple cycles.
Global Compatibility
Full support for both Metric and Imperial standards, fitting European and American profile series.
Product Gallery
Management Platforms
ISO 9001 Quality Control
Strict dimensional monitoring ensuring head tolerances within ± 0.1 mm for perfect slot fit.
Thread Concentricity
Every batch is verified for perfect centering between the threaded stud and the hammer head.
Material Certification
Full traceability for Alloy Steel and Stainless Steel grades to ensure structural integrity.
Coating Verification
Salt spray testing for all surface treatments to guarantee specified corrosion resistance.
Export Packaging
Bulk 25kg export cartons shipped on fumigation-free pallets for international logistics.
Technical Support
Factory-direct engineering guidance for size and material selection based on load requirements.
Investment Return Comparison
| Feature | Standard Sliding Nuts | Longze T-Bolts |
|---|---|---|
| Installation Speed | Slow (Slide from end) | Fast (Drop-in anywhere) |
| Assembly Ease | Difficult for vertical | Ideal for vertical hanging |
| Clamping Area | Limited Contact | Maximum Head Surface |
| Vibration Resistance | Moderate | High (Locking Rotation) |
| Stability | Prone to sliding | Fixed Stud Position |
Frequently Asked Questions
Yes, Longze T-bolts are compatible with most V-slot extrusions. We recommend verifying the hammer head width against the narrowest part of your specific V-groove for a perfect fit.
T-bolts provide a permanent threaded stud, making them significantly easier to use for vertical installations and allowing parts to be hung during assembly before final tightening.
For outdoor environments, we recommend Stainless Steel A4 (316) or passivated finishes, which offer superior corrosion resistance against humidity and weather exposure.
Avoid over-torquing, especially with Grade 8.8 bolts in soft aluminum. Use a calibrated torque wrench to ensure clamping force is sufficient without exceeding the material limits of the profile.
Grade 10.9 bolts have a higher tensile strength (1040 MPa) compared to Grade 8.8 (800 MPa), making them suitable for heavy machinery and CNC frames with higher load requirements.
Yes, in addition to DIN 975, we offer custom industrial specifications. Please provide your profile dimensions and load requirements for a technical recommendation.
English 
Afrikaans 
Arabic 
Bengali 
Bulgarian 
French 
German 
Hindi 
Indonesian 
Italian 
Japanese 
Korean 
Malay 
Portuguese 
Russian 
Spanish 
Thai 
Turkish 
Urdu 
Vietnamese 
