Cup Nut

Cup Nut
Details:
Steel Prop Cup Nut, Handle Nut for Steel Prop, Steel Shoring Prop Nut
Core component for adjustable steel shoring props. Made of Q235/Q345 carbon steel, welded for high strength & anti-deformation. Double U-handle for easy operation, internal thread matches prop screw for precise height adjustment. Surface options: electro-galvanized / hot-dip galvanized / powder coated, rust-proof for outdoor construction. Widely used in formwork, bridge & tunnel support.
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Description
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Basic Info.

 

Material & Process

Made of Q235/Q345 carbon steel, welded structure, high strength and anti-deformation.

Surface Treatment

Electro-galvanized / Hot-dip galvanized / Powder coated

Weight

1.35 kg

Main Body Length

Approx. 130 mm

Handle Width

Approx. 90 mm

Handle Diameter

Approx. 20 mm

Thread

Suitable for common steel prop screw rods (e.g. for 48 mm tube)

 

Working Process

 

 

Coarse Adjustment

First, extend the inner tube of the steel shoring prop to the desired approximate height and secure it in place with a locking pin (G-Pin).

 
 

Fine Adjustment

Turn the U-shaped handle of the cup nut to move the nut up or down along the screw rod, ensuring the top plate of the steel prop fits tightly against the formwork or structure.

 
 

Load Bearing

Once leveled, the cup nut steadily transmits vertical loads from the inner tube to the outer tube, maintaining the stability of the entire support system.

 
 

Disassembly

Rotate the handle in the reverse direction to loosen the cup nut, extract the locking pin, and retract the inner tube to finish the disassembly process.

 

 

Function & Working Principle

 

Function: As a key adjustment part of the adjustable steel shoring prop, it is mainly used to fine-tune the prop's height, achieve accurate leveling of formwork, and transfer vertical loads to maintain the stability of the temporary support system.

Working Principle: The internal thread of the cup nut is closely matched with the screw rod of the steel shoring prop. By manually turning the double U-shaped handle, the cup nut can slide up and down along the screw rod, which in turn drives the inner tube of the steel prop to lift or lower slightly, achieving millimeter-level precise height adjustment. Its welded structure ensures the cup nut can stably bear vertical loads without deformation or loosening during operation.Key Features & Advantages

 

Application Scenarios

 

It is commonly used with adjustable steel shoring props in a variety of temporary support situations, such as building formwork support (for floor slabs, beams and columns), bridge construction (support for bridge decks and box girder pouring), tunnel engineering (temporary support for arches and side walls), factory renovation (temporary shoring for roofs and trusses), stage truss support, and emergency reinforcement of dilapidated buildings. Suitable for outdoor and complex construction environments, it is an indispensable accessory for construction, infrastructure and other projects.

 

FAQ

 

Q1: What is a cup nut used for?

A: Cup nuts cover and protect bolt threads, prevent corrosion, improve safety, and provide a finished look. Used in scaffolding, construction, furniture, automotive.

Q2: What standards do you follow?

A: DIN917, DIN1587, ISO, BS1139, EN74.

Q3: What materials are available?

A: Q235 carbon steel, stainless steel 304/316, brass.

Q4: Can you produce custom sizes?

A: Yes, custom sizes, thread, material, surface are welcome.

Q5: What is your MOQ?

A: Standard MOQ 1000pcs; small order negotiable.

Q6: Do you provide samples?

A: Yes, free samples available (shipping cost by buyer).

Q7: Can you make customized logo and galvanized color for cup nut?

A: Yes, we support OEM customized logo, marking, and various galvanized surface colors. We can produce according to your drawings and special requirements.

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