Panel Fastener Selector
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Step 1 — Choose Your Path
Select a product line to configure, or choose an application for guided recommendations.
Why Skybolt?
Since 1982Product Lines
Browse by product category
Quarter-Turn Fasteners
CLoc, ZLoc, ALoc and related quick-access fasteners.
Structural Fasteners
SkyLoc® QL™ Series structural panel fasteners for flight-critical applications.
Cowling Kits
Airframe-specific kits and assemblies. Coming soon
Tooling
Install tools, drill templates, gauges, and accessories. Coming soon
Applications
Get recommendations based on your industry
Racing
Ultra-light Skytanium fasteners for motorsport cowlings and body panels. NASCAR, NHRA, IndyCar approved.
Industrial Equipment
Heavy-duty fasteners for machinery access panels and enclosures. CLoc 4000 structural quarter-turns and SkyLoc high-load panel fasteners.
Military Drones
Mil-spec quarter-turn solutions for UAV maintenance panels and avionics access doors. CLoc 2000 lightweight and SkyLoc structural options.
Skybolt Racing Fasteners
The Industry Standard for Quick Release Fasteners
Skybolt has served the Aerospace and Automotive Racing industries since 1982 through distribution and manufacturing of high quality, traceable, aerospace fasteners. We specialize in ¼-Turn Panel and Cowling fasteners in steel, 303 stainless, and our unique lightweight, high strength Skytanium® materials.
The unique Skybolt Skytanium Series Quick Release Fasteners target a 50% weight advantage with steel strength ratings. These engineering breakthroughs have become an industry standard, from Airbus to NASCAR, NASA to NHRA and IndyCar.
Select Your Racing Fastener Type
CLoc Fasteners
Flush-head quarter-turn fasteners. Skytanium construction for maximum weight savings with aircraft-grade strength.
- 200 LBS Working / 300 LBS Ultimate Load
- Phillips or Torx drive
- Flush mount for aerodynamic surfaces
Structural Fasteners
High-strength structural panel fasteners for roll cages, composite panels, and load-bearing applications.
- SN Series — 1,650 lbs tensile / 1,800 lbs shear
- EXT Series — 2,600 lbs tensile / 2,500 lbs shear
- Multiple head styles & receptacle options
ZLoc Fasteners
High-performance steel quarter-turns for extreme conditions.
- Higher load capacity
- Steel construction
- Heavy-duty applications
Configure Your Racing CLoc Fasteners
Enter your panel overlap dimension to get the correct dash number. We'll recommend the appropriate Skytanium stud and receptacle combination.
Combined thickness of outer panel + inner support panel (0.01" to 0.479")
Configure Your Structural Fasteners
Choose your fastener series below, then configure your options. We'll recommend the correct stud, receptacle, and hardware combination.
Select Series
SkyLoc® SN Series
#8-32 Quad-lead ratchet cam with integrated locking. 300-Series Stainless Steel.
- 1,650 lbs tensile / 1,800 lbs shear
- Flat, Pan, or Knurled head
- Grip: 0.120" – 1.844"
SkyLoc® EXT Series
1/4-28 two-lead with beam-style locking. 4140 Steel, Cadmium-Plated.
- 2,600 lbs tensile / 2,500 lbs shear
- Flat Head only
- Grip: 0.180" – 0.850"
SN Configuration
Combined panel stack thickness. SN range: 0.120" – 1.844"
Industrial Equipment Fasteners
High-Performance Fasteners for Industrial Applications
Skybolt industrial fasteners deliver the same aerospace-grade quality trusted by NASA and Airbus, engineered for heavy machinery access panels, equipment enclosures, and industrial panel retention. Choose from structural quarter-turn CLoc 4000 or high-load SkyLoc panel fasteners.
Select Your Fastener Type
CLoc 4000 Series
Structural quarter-turn fasteners for machinery access panels, equipment enclosures, and heavy-duty industrial applications.
- 1,050+ LBS Ultimate Load
- 4-piece system with grommets
- Multiple head & receptacle options
SkyLoc® SN Series
High-strength structural panel fasteners for industrial panel retention. 300-Series Stainless Steel.
- 1,650 lbs tensile / 1,800 lbs shear
- Flat, Pan, or Knurled head
- Grip: 0.120" – 1.844"
SkyLoc® EXT Series
Maximum structural performance for high-load industrial panels. 4140 Steel, Cadmium-Plated.
- 2,600 lbs tensile / 2,500 lbs shear
- Flat Head only
- Grip: 0.180" – 0.850"
CLoc 4000 Configuration
Select your stud style, grip thickness, grommet, and receptacle options.
Combined panel stack thickness.
Military Drone Fasteners
Precision Fasteners for Military Drone Applications
Skybolt mil-spec fasteners are trusted on platforms from the F-35 to next-generation UAVs. Lightweight CLoc 2000 quarter-turns for maintenance panels and avionics access doors, plus SkyLoc structural options for primary drone structural panels requiring higher load capacity.
Select Your Fastener Type
CLoc 2000 Series
Non-structural to semi-structural quarter-turn fasteners ideal for UAV maintenance panels, avionics access doors, and drone body panels.
- 200 LBS Working / 300 LBS Ultimate Load
- Multiple head styles & drives
- Ultra-lightweight Skytanium® options
SkyLoc® SN Series
Structural panel fasteners for drone structural panels requiring higher load capacity. 300-Series Stainless Steel.
- 1,650 lbs tensile / 1,800 lbs shear
- Flat, Pan, or Knurled head
- Grip: 0.120" – 1.844"
SkyLoc® EXT Series
Maximum structural performance for primary structural drone panels. 4140 Steel, Cadmium-Plated.
- 2,600 lbs tensile / 2,500 lbs shear
- Flat Head only
- Grip: 0.180" – 0.850"
CLoc 2000 Configuration
Select your stud style, grip thickness, and receptacle options.
Combined panel stack thickness.
Step 2 — Select Family
How to Choose the Right CLoc® Fastener
The application will determine the correct fastener. CLoc® fasteners are precision-engineered quarter-turn solutions trusted by aerospace, defense, motorsport, and commercial industries worldwide.
1. Structural Requirements
Non-structural with no mass consideration? Consider CLoc 2000 Series.
Semi-structural with some mass? Consider CLoc 4000 or 6000 Series.
2. Lip / Panel Overlap
.355" to .500" — CLoc 2500 Series
.500" to .710" — CLoc 2600/2700/2800 Series
.710" or more — CLoc 4000 Series
3. Weight Considerations
Consider the Skytanium® CLoc ZG Series for 30% to 50% weight savings without sacrificing steel strength ratings.
4. Receptacle Preference
Rivet Receptacle? Crimp Receptacle? Backing Nut? Bonded Receptacle? Each offers different installation and performance characteristics.
Select Your CLoc Family
CLoc 2000 Series
3-Piece System — Stud + Retainer + Locking Receptacle
Non-structural, ultra-light weight. Lip dimensions < 0.710".
CLoc 4000 Series
4-Piece System — Stud + Retainer + Grommet + Locking Receptacle
Semi-structural with grommets. Lip dimensions > 0.710".
ZLoc
High-performance steel quarter-turns. Coming soon
ALoc
Lightweight aluminum quarter-turns. Coming soon
Platemounts
Fixed receptacle plates and weldables. Coming soon
Step 3 — Configure Your Fastener
CLoc 2000 Configuration
Select your stud style, grip thickness, and receptacle options.
Auto-calculated from panel thicknesses. Override if there's a gap or spacer between panels.