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PI Collar Flanged

The PI Collar Flanged is a versatile and high-strength fastening solution designed to complement PI lockbolts in structural and heavy-duty applications. Its unique flanged design ensures superior grip and load distribution, making it ideal for industries like construction, aerospace, and automotive. Manufactured by Pankaj International, the best fastener manufacturer in India, these collars excel in providing vibration resistance and long-lasting durability, even in extreme environments. With a focus on quality and adherence to international standards, Collar-Flanged fasteners deliver unmatched performance for critical applications.

Size Range
Diameter --
Length --
Technical Specifications


Part No.Dia.(mm)(mm)(mm)(mm)(mm)
LCFS-16G1/2" 12.95 - 13.59 20.14 - 20.50 18.44 - 19.20 2.39 - 3.96 24.61 - 26.19
LCFS-20G
5/8" 16.51 - 16.89 24.89 - 25.30 23.60 - 24.36 3.18 - 4.75 30.94 - 32.54
LCFS-24G
3/4" 19.71 - 20.07 29.72 - 30.35 28.17 - 29.34 3.96 - 5.54 37.59 - 38.74
LCFS-28G
7/8" 22.76 - 23.37 34.54 - 34.80 32.84 - 34.01 4.75 - 6.35 39.88 - 41.02
LCFS-32G
1" 26.16 - 26.67 39.37 - 39.75 37.72 - 38.48 5.54 - 7.14 46.81 - 48.41
LCFS-36G
1-1/8" 29.46 - 29.85 44.45 - 44.70 42.55 - 43.56 6.93 - 7.34 53.47 - 54.48



1. Flanged Design for Enhanced Load Distribution


The PI Collar Flanged is specifically engineered with a flanged design to maximize load distribution and ensure secure fastening. This feature minimizes the stress on materials, making it perfect for use in structural steel, bridges, and heavy machinery. The flanged collar works seamlessly with PI lockbolts, creating a joint that remains stable under dynamic loads and vibrations. Pankaj International, a trusted name in the fastener industry, offers this product with precise specifications, catering to diverse industrial requirements.


2. High-Strength Fastening for Extreme Conditions


Crafted with premium materials, the PI Collar Flanged is built to withstand harsh conditions, including extreme temperatures, corrosion, and heavy impacts. Its durability makes it an essential choice for marine applications, transport vehicles, and aerospace structures. With its robust performance, it often serves as a superior alternative to traditional fasteners and rivets. Backed by Pankaj International's commitment to quality, the Collar Flanged ensures reliability in critical applications where failure is not an option.


3. Seamless Integration with Lockbolt Systems


Designed to complement structural PI lockbolts and high-tensile fasteners, the PI Collar Flanged ensures a perfect fit for a wide range of industrial projects. Its compatibility with PI lockbolt tools and installation systems streamlines assembly, reducing time and labor costs. Whether in construction, rail industry, or electrical equipment, this collar delivers exceptional joint stability and efficiency, making it a valuable addition to any fastening system.


4. International Standards and Certifications


The PI Collar-Flanged meets and exceeds global standards, including ISO,  BS , DIN ANSI & JIS benchmarks, ensuring unmatched reliability. Manufactured by Pankaj International, each product undergoes rigorous testing to guarantee performance under specified user guidelines. By focusing on hardness requirements and precision engineering, we deliver a fastening solution trusted by industries worldwide.


5. Technical Drawings and Custom Solutions


For professionals seeking detailed specifications, Pankaj International offers comprehensive technical drawings and custom solutions for the Collar Flanged. These resources provide essential details such as dimensions, torque requirements, and installation methods, simplifying the selection process. Explore our online catalog to find the perfect fastener for your project or contact us for tailored solutions that align with your needs.


6. Best Fastener Manufacturer in India


When it comes to industrial fasteners, Pankaj International stands as a leader in innovation and quality. Our PI Collar Flanged fastener represents the pinnacle of precision engineering and durability. Join the growing number of global clients who trust us for their structural fastening needs. Contact us today to learn how our solutions can elevate your project.

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Pankaj International is an ISO Certified Nationwide Manufacturer of Stocked and Custom Nuts, Bolts and Fasteners

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