Double U Bolt

A Double U Bolt is a fastening component shaped like the letter “U”, used in pairs or as a double arrangement for extra grip and stability. It is commonly used in scaffolding, piping, structural steel fixing, and heavy-duty clamping applications. NOVSA manufactures Double U Bolts in various sizes and finishes to ensure secure connections in construction and industrial use.

Double U Bolt – Size & Weight Chart

Bolt Diameter (mm)

U Bolt Width (mm)

U Bolt Height (mm)

Thread Length (mm)

Approx. Weight (kg/pc)

6 mm

25 – 40

40 – 60

15 – 25

0.05 – 0.08

8 mm

30 – 50

50 – 80

20 – 30

0.10 – 0.15

10 mm

40 – 60

60 – 100

25 – 40

0.18 – 0.25

12 mm

50 – 80

80 – 120

30 – 45

0.28 – 0.40

16 mm

70 – 100

100 – 150

40 – 60

0.50 – 0.75

20 mm

90 – 120

150 – 200

50 – 70

0.80 – 1.20

24 mm

100 – 150

200 – 250

60 – 80

1.50 – 2.00

Surface finish for NOVSA Double U Bolt

Surface Finish

Description

Advantages

Hot-Dip Galvanized (HDG)

Thick zinc coating by dipping in molten zinc.
Best corrosion protection, suitable for outdoor & marine use.

Electro-Galvanized (EG)

Thin zinc layer applied through electroplating.
Smooth finish, economical, good for indoor/general use.

Zinc Plated

Uniform zinc coating applied by mechanical/chemical process.
Moderate rust protection, shiny appearance.

Powder Coated / Painted

Colour finish with protective paint or powder.
Aesthetic look, cost-effective, medium corrosion resistance.

Self-Colour (Black Steel)

Supplied in natural steel finish without coating.
Budget-friendly, suitable for temporary or indoor usage.
All NOVSA Double U Bolts are manufactured with precision threading and high load-bearing capacity, ensuring secure fastening in scaffolding and industrial applications.

Standard for NOVSA Double U Bolt

Standard

Description

IS 1363 / IS 2675

Indian Standards for bolts, nuts, and fasteners, covering dimensions and mechanical properties.
DIN 3570 / DIN 444
German Standard for U Bolts and fastening hardware, ensuring mechanical strength.
ASTM A307 / ASTM A193
American Standard for carbon steel bolts and high-strength bolts.
EN 74
European standard for scaffolding fittings, including U Bolts and couplers.
Every NOVSA Double U Bolt undergoes dimensional checks, load tests, and corrosion resistance tests before dispatch.

Material Grade for NOVSA Double U Bolt

Material Grade

Standard

Properties / Advantages

Mild Steel (MS) – IS 2062 E250/E275)

Indian Standard

Cost-effective, good weld ability, suitable for general scaffolding and construction use.

Carbon Steel (S235JR / S275JR / S355JR)

EN 10025 (European Standard)

Higher strength, excellent toughness, suitable for heavy-duty applications.

Alloy Steel (Optional – customized)

ASTM / EN Standards

Extra hardness & toughness for specialized industrial applications.

Stainless Steel (SS 304 / SS 316)

ASTM / EN Standards

Corrosion-resistant, ideal for marine and outdoor applications.