Shop EFC International’s collection of caps, plugs, knobs, and handles for functional finishing and protective solutions. Our diverse inventory delivers the right fit and appearance for your products—ensuring sealing, protection, and ease of use in automotive, electronic, and industrial assemblies.

Connector Holders and Caps: Secure Fastening Made Simple

Protect and fasten connectors with a range of solutions designed to meet automotive manufacturing needs. These connector caps safeguard unused circuits during production while allowing easy integration of aftermarket electrical options.

APPLICATION
Protecting, covering, and mounting connectors for unused circuits at the point of manufacture.
To securely fasten connectors to the vehicle
Suitable for most types of automotive connectors

Key Benefits
- Universal Fit: Compatible with most automotive connectors for secure fastening.
- Enhanced Protection: Covers and mounts unused connectors to prevent damage or contamination.
- Flexibility: Streamlined solutions for adding electrical components post-manufacture.

EFC International provides a wide array of clamps, including constant tension, worm-drive, and crimp-style clamps, optimized for hose, pipe, and cable securing needs. Engineered for superior fit, corrosion resistance, and secure fastening, our clamps suit automotive, HVAC, and industrial applications requiring leak-proof and vibration-resistant solutions.

Tube Holders: Secure Cables and Hoses with Precision

Engineered to accommodate flat and round wires, cables, and hoses, our multi-use tube holders are built for versatility. With solutions tailored to various diameters and panel thicknesses, these holders deliver reliability in every application.

Key Features of Our Tube Holders

• Locking Clamps: Ensure 360-degree containment of harnesses and tubes while offering flexible mounting options.
• Ratchet Clamps: Adapt to multiple bundle diameters with the convenience of reopening without dismounting.
• Unmatched Flexibility: Combine plastic or bi-injected components with spring steel clips for multi-housing capabilities.

Ideal Applications

• Electrical Distribution Systems: Secure and organize wiring in vehicles, machinery, and control panels.

• Thermal Line Management: Fasten coolant, heating, and steam lines in automotive, industrial, and HVAC setups.

• Chassis Systems: Attach brake, fuel, and other lines to vehicle frames or equipment chassis for durability and easy maintenance.

• Powertrain Installations: Manage cables and hoses in engine compartments and drivetrains, resisting vibration and temperature extremes.
  
  

Additional Uses: Support multi-housing configurations, streamline panel assemblies, and perform reliably in harsh environments to deliver flexible, secure cable and hose management wherever needed.

Enhance your wiring and electrical systems with EFC International’s advanced cable management, electrical fittings, and fastening solutions. Our comprehensive product range includes cable mounts, clips, connectors, bushings, and insulation materials—engineered for optimal wire routing, protection, and reliable electrical performance in any application.

Cable Protectors: Superior Routing, Insulation & Durability

Engineered to withstand harsh conditions, our cable protection systems offer unmatched performance against debris, liquids, abrasion, punctures, and extreme temperatures. Manufactured using advanced materials, these solutions combine flexibility and durability with minimal weight.

Protection Options:

- Braided Sleeving: Lightweight yet robust protection against extreme temperatures and electromagnetic interference. Available in expandable or wrap-style options with hook-and-loop closures.

- Split Wrap Sleeving: Reflective sleeving enhances safety while shielding cables from wear-and-tear in high-voltage applications.

- Flexible Conduit Systems: Comprehensive solutions include tubing, fittings, and accessories to protect wires from liquids, dirt, UV exposure, and vibration.

Applications:

Ideal for solar farms, automotive systems, industrial machinery, and outdoor installations requiring UV-resistant convoluted tubing or abrasion-resistant materials.

Discover Cable Management Solutions That Work as Hard as You Do

 
From securing cables to organizing complex harnesses, our products are engineered to deliver precision and reliability across industries.
Scan the QR code to find the perfect solution for your application needs!

KEY FEATURES & BENEFITS

 
» WIDE COMPATIBILITY
New sizes accommodate #6 AWG cables for expanded application possibilities.
» VERSATILE CONNECTIONS
Suitable for single or multiple cable configurations into micro-inverters, junction boxes, and other equipment. Available in NPT, Metric, and PG threading options.
» PROTECTIVE FUNCTIONALITY
Tear-away designs act as plugs before cable installation, shielding enclosures from rain, insects, and contaminants. When ready for use, simply puncture and tear away for easy pass-through.

 
APPLICATIONS

 
Designed to provide a liquid-tight connection for specific cable configurations:

 
>> Accommodates multiple cables and grounding connections with various threading sizes.

 
>> Ensures secure routing and protection in demanding environments.

Discover EFC International’s full selection of high-strength rivets, snap rivets, blind threaded inserts, and fastening solutions designed for secure, durable assemblies across automotive, industrial, and electronics sectors. Our rivets offer easy installation, vibration resistance, and exceptional pull-out strength for demanding applications.

Explore a wide selection of high-quality screws, bolts, studs, and pins at EFC International, engineered for reliable fastening in automotive, industrial, and commercial applications. Our comprehensive assortment includes specialty threaded studs, cap screws, sex bolts, lockbolts, weld studs, and precision pins—perfect for metal, plastic, or composite assembly. Trust EFC International for durable, easy-to-install fastener solutions tailored to your specific requirements.

EFC International offers a complete range of fastener solutions, including self-retaining nuts, U-type, J-type, mid-panel, pierce, clinching, rivet, cage, T-nut, and specialty vibration-resistant designs. Engineered for secure fastening, easy snap-in installation, and precise alignment—even in blind assemblies—our self-retaining nuts deliver high strength, durability, and versatility for automotive, industrial, and electronic applications.

Find quality shaft and bolt retainers, push-on fasteners, and retaining rings at EFC International to secure components in automotive, industrial, and appliance assemblies. Engineered for reliability and fast installation, our shaft and bolt retainers simplify fastening solutions and ensure superior vibration resistance.

Nuts are manufactured in countless materials, shapes, sizes, and thread patterns. While the thread type and size of the bolt largely guide the selection process for the associated nut, there is still some flexibility in terms of material choice and nut head shape. This page will explore the many different options available for specialty nuts.

Types of Specialty Nuts

EFC International supplies a wide variety of specialty nuts and nut and bolt sets for commercial and industrial use. Our stock of specialty nuts includes:

• Automation self-retaining nuts. These nuts offer an ideal solution for panel alignment in fast-moving assembly systems. The nuts stack with each other and snap together and get installed using a pneumatic bench-mounted tool or hand tool.
• Blind threaded inserts. Blind-threaded insert nuts feature a low-profile head and small diameter bodies, making them well-suited for mitigating spinout in close-to-edge or small hole applications.
• Bondable nuts for insert molding. Our BigHead® Hex Nut attaches to stainless steel or galvanized steel heads and is available in a variety of standard head sizes and shapes to suit the needs of different applications.
• Cap nuts. Cap nuts resist wear caused by misalignment and vibration. Technicians can install our push-on caps over rod ends, shaft ends, and stud ends to hold components in place.
• J-Type retaining nuts. EFC’s J-Type U-Nuts press easily into place over the edges of panels or in center-panel applications.
• Mid-panel retaining nuts. Our self-locking Mid-Panel Multi-Thread M6 Expansion Nuts feature single-piece construction and can be used in mid-panel assemblies without the risk of loosening due to vibration.
• Pierce and captive retaining nuts. Floating clinch nuts use a self-clinching fastener in conjunction with a floating nut to compensate for misalignments up to 0.030". They also comply with MIL-N-250-27 specifications for prevailing torque.
• U-Nuts. U-Shaped Speed Nuts® make it easy to assemble mating panels. These pieces of hardware are self-retaining and default to the screw-receiving position.        
• Rivet nuts. Our rivet nuts are designed for easy installation. They also allow operators to easily control the bulge forms during installation for consistency across wide assembly orders.
• Weld nuts. We provide weld nuts that can be spot welded in blind locations. Each nut is fully threaded and self-retaining.
• Flange nuts. Flange nuts have a base with a wider surface area to lower tension and pinch against the assembly surface, similar to how a washer functions. Flange nuts provide tight, reliable connections.

Specialty Threaded Nuts and Bolts From EFC International

Along with our selection of specialty nuts, we also provide nut and bolt sets for a wide range of applications. Our inventory includes these products:

Advanced Compensation Nut (ACN)

ACNs help users to address gaps and tolerance problems in assemblies. ACNs snap into the panel and auto-adjust during installation. After placement, the ACN adjusts to any gaps in the system to reduce weak points as the bolt gets tightened.

Aluminum Threaded Inserts for Plastics

These inserts get inserted into mold cavities before the molten plastic flows and hardens around them. This locks the hardware into place and ensures a high level of torque. They are ideal for use in thermoset and engineered plastic products that have a lot of filler and need reliable fastener performance.

BBA Spacer

These nut and bolt hardware sets offer speed and simplified installation without any welding requirements. They also provide additional strength to the structure and will tolerate vibrations.

Cage Nuts

Cage nuts provide an ideal solution for assemblies with panels 0.025-0.25 inches thick. They will hold soft metal constructions in place during assembly and are easy to install, easy to remove for maintenance, and require no special tools.

Panel Edge Nuts (U-Nuts)

As fairly universal pieces of hardware, panel edge nuts can take the place of most screws or bolts. The strength of the joint varies based on the screw size and impression types. Panel edge nuts from EFC feature a new ergonomic thumb tab that simplifies manual installations.

Rivet Nuts

Rivet nuts facilitate blind placement and don't require welding. They allow installation on and removal from pre-painted materials without the risk of damage. Customers can choose from different head styles, materials, body styles, and sizes ranging from 3/4-10 and M16.

Specialty Nuts From EFC International

At EFC International, we provide a broad portfolio of specialty fasteners ranging from specialty nuts and bolts to clamps. We're a leading provider in the assembly sector, offering electrical components, plastic or metal fasteners, and more. Contact us today to see how we can support your project. 

EFC International’s engineered fastening solutions include metal panel fasteners, clip fasteners, and trim solutions designed to deliver secure, durable assembly for automotive, industrial, and commercial applications. Source high-performance metal panel fasteners and metal clip fasteners engineered for easy installation and reliable retention, optimizing any metal panel assembly.

Panel fasteners are used to secure panels to a support framework in a range of applications and industries. Plastic fasteners are durable, economical, efficient, and aesthetically appealing. They are also resistant to corrosion, shock, and vibration. 

Notably, plastic panel fasteners are available in a range of sizes and shapes, and each one is designed for a specific purpose. EFC International provides panel fasteners that are uniquely designed and can withstand a range of environmental conditions.

Industries

Plastic fasteners are used in several industries for blanking small holes and securing multiple panels. Some nylon snap-rivet varieties come as pre-assembled products ready to push into holes manually. 

Some of the specific markets that these panel-fixing products serve include

• Automobile

• Marine

• Industrial equipment production

• Appliances

• Assembly

• HVAC

• White goods

• Heavy truck

• Robotics

Applications

Plastic panel fasteners are best suited for fastening several varieties of panels, billboards, and doors in wood, metal, padded fabrics, rubber, and many others. These fasteners can also be custom-designed with technical specifications to meet diverse applications such as panel wall clips, car trim clips, car body panel fixings, board clips, and car door retainers. Other typical applications include wheel arch/fender clips, weatherstrip retainers, tailgate light clips, the panel under-bonnet rivets, assembling industrial equipment, fastening rubber side doors, home appliances, electrical devices, and more.

Plastic Products by EFC International

At EFC International, we are committed to providing high-quality plastic panel fasteners that meet the requirements and specifications of each of our customers. All our plastic products meet stringent industry quality standards that guarantee you get defect-free products to optimize your processes, drive efficiency, and boost productivity. 

EFC International Fasteners

EFC International is the leading provider of specialty-engineered fastener parts, including panel fasteners, specialty nuts, clamps, and more. We have a proven track record and SAP-CRM & fully automated warehousing processes that assure exceptional product quality and custom solutions designed to fit your specific applications and budget. We offer the most comprehensive line of specialty metal, plastic, and electrical components to meet your fastening needs. Our solutions are well suited for applications in a wide range of industries, from agriculture and automotive to power generation and robotics. To learn more about our products and services, if you have further questions, or need to request a quote, please contact us today.

Unlock advanced lightweighting and powertrain solutions from EFC International, including BCT® rivet nuts and engineered isolators for high-performance automotive components. Our products are built to reduce weight, improve efficiency, and ensure maximum strength and reliability in modern engine, battery, and transmission systems.