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Jam Nut

High-Quality Jam Nuts for Secure, Space-Saving Applications

These nuts feature a thin profile and are typically used in conjunction with a standard hex nut for added security.

 

Constructed from durable materials, jam nuts are ideal for critical applications in industries such as aerospace, automotive, construction, renewable energy, and industrial machinery.

 

Jam nuts, also known as half-height nuts, are designed to lock components into place where space is limited or where a full-size nut would be excessive. At UPS Lakshmi, we manufacture a wide range of jam nuts engineered for performance, reliability, and precision fit.

 

These low-profile fasteners are used either alone or with standard nuts to prevent loosening in assemblies subject to vibration or torque. Because of their compact size, jam nuts are ideal for mechanical systems, threaded rods, or adjustment applications where conventional nuts are impractical.

Why Choose Jam Nuts?

Jam nuts are built to provide mechanical locking and adjustability without the bulk. When tightened against a standard nut, they “jam” the threads and reduce the risk of back-off due to dynamic loads or frequent movement.

 

Common applications include:

  • Threaded rod assemblies
  • Equipment with adjustment settings
  • Locking mechanisms for machine components
  • Soft material clamping
  • Mechanical assemblies with limited clearance

 

Whether used to secure a component, provide precise adjustment, or act as a secondary locking element, jam nuts are trusted for their versatility across industries.

Technical Properties

Our jam nuts are produced using both hot and cold forging, ensuring excellent mechanical strength and uniformity. Here’s what you can expect from UPS Lakshmi jam nuts:

  • Forming Method: Hot & Cold Forged
  • Metric Sizes: M10 to M100
  • Imperial Sizes: 3/8” to 8”
  • Threads Supported: UNC, UNF, ISO, BSW & ACME
  • Standards Followed: ASME, BS, DIN, ISO, UNI, DIN-EN

 

Whether you’re working with imperial or metric systems, our jam nuts meet global standards to fit your design specifications.

Jam Nut Types We Offer

UPS Lakshmi offers four key variants to meet diverse engineering needs:

 

  • Fully Threaded Jam Nuts – Provide full thread engagement and are ideal for high-load locking.
  • Partial Threaded Jam Nuts – Allow selective threading for specific applications.
  • Metric Jam Nuts – Built to ISO/DIN standards for compatibility in global systems.
  • Imperial Jam Nuts – Sized according to inch-based systems, ideal for US-standard machinery.

 

All variants are available in custom materials and finishes, including zinc plating, hot-dip galvanising, and black oxide.

Built for Critical Performance

At UPS Lakshmi, we understand that locking hardware is more than just a component—it’s a performance enabler. That’s why we pay close attention to:

 

  • Thread strength and compatibility
  • Dimensional stability across production lots
  • Finishing processes for corrosion resistance
  • Thread alignment for dual-nut systems

 

We provide both small and bulk orders, ensuring delivery on schedule with full traceability and documentation where required.

Partner with UPS Lakshmi

For many years, UPS Lakshmi has provided customers with dependable high-quality engineered fasteners. Our jam nuts are made in a high-tech production facility with quality checks at every stage.

FAQS:

1. What is the difference between jam nuts and regular hex nuts?

Jam nuts are thinner than regular hex nuts and are mainly used to lock things in place. If you tighten a jam nut against a regular nut, it will help prevent loosening due to vibration or movement, which is very useful in assemblies where there is not much space.

2. Where are UPS Lakshmi jam nuts typically used in industrial settings?

Our jam nuts are used across a wide range of applications, including threaded shafts, positioning systems, mechanical assemblies, and high-vibration environments. They’re ideal for locking components in place without adding excess weight or height to the assembly.

3. What standards and threads are supported in jam nuts?

Our jam nuts comply with ASME, DIN, ISO, BS, and UNI standards. Thread types include UNC, UNF, ISO metric, BSW, and ACME, ensuring full compatibility with both metric and imperial systems for global applications.

4. Can UPS provide jam nuts in both hot and cold forged variants?

Yes. At UPS, we offer both hot and cold forged jam nuts to match application-specific mechanical requirements. This allows us to provide enhanced strength, dimensional precision, and long-term performance based on the end-use conditions.

Customer Reviews:

  • We have not experienced any problems with fit or durability when using UPS jam nuts. – Ravi T., Pune
  • These jam nuts are ideal for assembling parts that need to be compact. The package arrived at my doorstep before the expected delivery time. – Priya N., Bengaluru
  • The finish is excellent, the threads are precise, and it works well even when under pressure. We are using UPS fasteners as our standard now. – Vikram M., from Chennai
  • This product is very reliable. The jam nuts stay in place and do not loosen, even when the machine vibrates often. – Sandeep K., Delhi