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AIAPAn FDH Company |
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Address: |
Phone: 817.465.9880 |
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AIAPAn FDH Company |
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Address: |
Phone: 817.465.9880 |
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Collars
HI-SHEAR Fasteners
Miscellaneous Fasteners
NAS Fasteners
AIAP supplies a full range of hi-shear fasteners engineered for high-strength, high-reliability joints in demanding environments. Widely used across aerospace, defense, transportation, and industrial assemblies, these solutions deliver consistent clamp-up, precise fit, and exceptional shear and tensile performance.
This comparison chart outlines the different Hi-Shear fastener types available and the standards they meet.
Feature / Quality | Hi-Lok | Hi-Tigue | Hi-Lite |
|---|---|---|---|
Primary Benefit | Standard high-strength fastener with consistent preload | Fatigue-resistant fastener for high-cycle joints | Lightweight evolution of Hi-Lok for weight-critical applications |
Pin Design | <a href="/products/hi-shear-fasteners/hi-lok-pins/">Hi-lok Pins</a> - Precision straight shank | <a href="/products/hi-shear-fasteners/hi-tigue-pins/">Hi-Tigue Pins</a>- Interference-fit shank with bead/groove for hole-filling | <a href="/products/hi-shear-fasteners/hi-lite-pins/">Hi-Lite Pins</a>- Reduced-weight shank & head (up to ~30% lighter) |
Fatigue Performance | Good | Excellent (best choice for fatigue-critical joints) | Moderate (optimized for weight, not fatigue) |
Strength-to-Weight Ratio | High | High, with fatigue optimization | Very high (lighter than Hi-Lok, comparable strength) |
Collar Function | <a href="/products/hi-shear-fasteners/hi-lok-collars/">Hi-Lok Collars</a>- Self-locking, break-off at torque groove | <a href="/products/hi-shear-fasteners/hi-tigue-collars/">Hi-Tigue Collars</a>- Self-locking, break-off at torque groove | <a href="/products/hi-shear-fasteners/hi-lite-collars/">Hi-Lite Collars</a>Self-locking, break-off at torque groove |
Materials Available | Titanium, Allow Steel, Stainless | Titanium, alloy steel, stainless | Titanium, alloy steel, aluminum, stainless |
Installation | Hex recess in pin + break-off collar | Same as Hi-Lok (controlled preload) | Same as Hi-Lok (controlled preload) |
Best Use Case | General aerospace structural fastening | Fatigue-critical areas (wing skins, fuselage, pressure bulkheads) | Weight-critical areas (airframes, interiors, racing, spaceflight) |
| Feature / Quality | Hi-Lok Fasteners | Hi-Tigue Fasteners | Hi-Lite Fasteners |
|---|---|---|---|
| Primary Benefit | Standard high-strength fastener with consistent preload | Fatigue-resistant fastener for high-cycle joints | Lightweight evolution of Hi-Lok for weight-critical applications |
| Pin Design | Hi-lok Pins - Precision straight shank | Hi-Tigue Pins - Interference-fit shank with bead/groove for hole-filling | Hi-Lite Pins - Reduced-weight shank & head (up to ~30% lighter) |
| Fatigue Performance | Good | Excellent (best choice for fatigue-critical joints) | Moderate (optimized for weight, not fatigue) |
| Strength-to-Weight Ratio | High | High, with fatigue optimization | Very high (lighter than Hi-Lok, comparable strength) |
| Collar Function | Hi-Lok Collars - Self-locking, break-off at torque groove | Hi-Tigue Collars - Self-locking, break-off at torque groove | Hi-Lite Collars - Self-locking, break-off at torque groove |
| Materials Available | Titanium, Allow Steel, Stainless | Titanium, alloy steel, stainless | Titanium, alloy steel, aluminum, stainless |
| Installation | Hex recess in pin + break-off collar | Same as Hi-Lok (controlled preload) | Same as Hi-Lok (controlled preload) |
| Best Use Case | General aerospace structural fastening | Fatigue-critical areas (wing skins, fuselage, pressure bulkheads) | Weight-critical areas (airframes, interiors, racing, spaceflight) |
Hi-Lite Pins and Collars are precision-engineered for weight-critical aerospace applications, providing secure assembly, consistent clamp-up, and reliable performance while minimizing structural mass.
Hi-Lok Pins are high-strength, torque-controlled pins that deliver consistent performance and load transfer across airframe assemblies. Paired with Hi-Lok Collars, they provide secure installation and full compliance with OEM specifications.
Hi-Tigue Pins & Collars are engineered for high-stress, high-cycle aerospace applications. Featuring interference-fit pins and self-locking collars, they deliver superior fatigue resistance, precise torque control, and long-term joint integrity.
