Self Locking Nut (THU) - 1"-8

The J.Lanfranco THU 1”-8 Self Locking Nut is a 1” diameter locknut with an 8 thread count that possesses a unique self-locking technology. These locknuts are ideal for maintenance-of-way operations on critical sections of rail such as diamonds and frogs because they are proven to stay put no matter how much overhead traffic or vibrations. The THU will tremendously reduce waste to your company including labor time and money, and broken components and castings.

While the standard nut-and-lock-washers on critical bolted joints usually require tightening every other day or so, the THU self-locking nuts do not require any tightening while still maintaining a strong hold. It is also a single-piece design, requiring no additional inserts when installing and is compatible with any standard bolt on a rail joint bar.

The 1”-8 THU Self Locking Nut was constructed using a unique locking design with two locking slots on either side. When installed, the locking slots expand and grip tightly onto the flanks of the bolt locking it in to any position. The locking torque applies evenly over two planes on opposite sides.

Beyond this, the grade 8 alloy steel used in the design is resistant to corrosion, adhesive wear and galling despite extreme temperature and heavy train loads, improving its overall durability and longevity.

The THU greatly reduces waste to your company; waste of labor time and expenses, and waste of broken components and castings. It will also increase the safety to your workers as they won’t need to spend as much time on more highly trafficked therefore more dangerous areas.

The Self Locking Nut (THU) 1”-8 can also be installed with standard hand tools like impact wrenches, and is reusable, unlike some competing products, and requires no anti-seize paste of grease. This helps increase convenience and minimize waste during maintenance-of-way operations. Shop IRS’ railroad switch keys and locks for sale for any additional needs.

Quick Specs:

• 1-1/8" diameter self-locking nut
• Self-locking technology
• Will not loosen despite heavy train traffic and vibration
• Single-piece design – no inserts required
• Anti-galling
• Resistant to adhesive wear and corrosion despite extreme temperatures
• Extreme reduction in waste
• No anti-seize paste or grease required
• No purchase of a bolt necessary
• Can remove and reuse
• 0.55 lbs

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