U Jack

A U Jack (also called U Head Jack) is an adjustable scaffolding accessory designed to hold beams, channels, and formwork in place during construction. It comes with a U-shaped head that provides stable support for timber or steel beams, ensuring proper load distribution and alignment in slab and beam formwork systems.
U Jacks are available in hollow tube and solid bar types with adjustable height, making them versatile for different project requirements.

U Jack – Standards

Standard

Description

BS 1139

British Standard for scaffolding components, ensuring strength & compatibility.

EN 74

European Standard for scaffold fittings & accessories.

EN 1065

Specifies requirements for adjustable telescopic props, jacks & formwork supports.

IS Standards (Optional)

Indian Standards for material quality, welding, and safety testing.

U Jack – Surface Finish

Finish Type

Description

Advantage

Electro-Galvanized (EG)

Thin zinc coating applied by electroplating.

Smooth finish, good for indoor use.

Hot-Dip Galvanized (HDG)

Thick zinc layer applied by dipping in molten zinc.

Superior corrosion resistance, best for outdoor projects.

Powder Coated / Painted

Protective paint coating in multiple colours.

Aesthetic appeal with medium corrosion resistance

Self-Colour (Black Steel)

Natural finish without additional coating.

Suitable for short-term / temporary use.

U Jack – Material Grade

Grade

Description

Mild Steel (MS)

Standard grade steel, strong and economical, suitable for general use.

Carbon Steel

 

Higher tensile strength, ideal for heavy load-bearing applications.

Forged Steel

Premium grade for maximum durability, toughness, and deformation resistance.

Surface Finish

Available in Zinc-Plated / Hot-Dip Galvanized / Painted for corrosion resistance.
NOVSA ensures all U Jacks are manufactured as per BS 1139, EN 74 & EN 1065 standards, with load testing for safety and reliability.

U Jack – Size & Weight Chart

Type

Thread Diameter

Tube / Bar Size

Length (mm)

Weight (Approx.)

Hollow U Jack

32 mm – 36 mm

Hollow Tube Ø 38 mm× 4 mm

350 – 750 mm

3.0 – 5.0 kg

Hollow U Jack

 

36 mm – 38 mm

Hollow Tube Ø 48 mm × 4 mm

350 – 750 mm

3.5 – 5.5 kg

Solid U Jack

32 mm – 36 mm

Solid Bar Ø 36 mm

350 – 750 mm

5.0 – 7.0 kg

Solid U Jack

36 mm – 38 mm

Solid Bar Ø 38 mm

350 – 750 mm

6.0 – 8.0 kg
  • Standard lengths: 350 mm, 450 mm, 600 mm, and 750 mm
  • The U Head Plate can be customized (100 × 100 mm, 125 × 125 mm, or 150 × 150 mm)