S Bolt Scaffolding S Bolt & Hook Bolt

An S Bolt is a hook-shaped fastening bolt used in scaffolding, construction, and industrial applications. The “S” shape allows it to securely hook onto scaffolding tubes, pipes, or rods, providing stable and reliable connections. NOVSA manufactures S Bolts from high-quality steel with precise dimensions to ensure strength, durability, and corrosion resistance.

NOVSA Bolt – Size & Weight Chart

Bolt Diameter (mm)

Bolt Length (mm)

Hook Opening (mm)

Approx. Weight (kg/pc)

Usage

10 mm

100 – 150

20 – 30

0.15 – 0.20

Light-duty scaffolding, pipe fixing

12 mm

120 – 180

25 – 40

0.25 – 0.35

Standard scaffolding connections

16 mm

150 – 200

30 – 50

0.45 – 0.65

Medium-duty scaffolding, props

20 mm

180 – 250

40 – 60

0.80 – 1.20

Heavy-duty scaffolding & industrial use

24 mm

200 – 300

50 – 70

1.40 – 2.00

Extra heavy-duty scaffolding, structural support

Surface finish for NOVSA S Bolt

Finish Type

Description

Advantages

Hot-Dip Galvanized (HDG)

Thick zinc coating applied by dipping in molten zinc.
Best corrosion resistance, suitable for outdoor & long-term scaffolding use.

Electro-Galvanized (EG)

Thin zinc coating applied through electroplating.
Smooth finish, economical, good for general usage.

Zinc Plated

Uniform zinc layer applied mechanically or chemically.
Shiny appearance, medium rust protection.

Powder Coated / Painted

Durable colour finish applied for additional protection.
Cost-effective, aesthetic, medium protection.

Self-Colour (Black Steel)

Supplied in natural steel finish without coating.
Budget-friendly, suitable for temporary or indoor applications.

Standard for NOVSA S Bolt

Standard

Description

BS 1139

British Standard covering scaffolding fittings and fasteners, including S-type bolts.
EN 74
European Standard for couplers, fittings, and threaded components in scaffolding.
IS 1363 / IS 1367
Indian Standards for bolts, nuts, and fasteners, covering dimensions and mechanical properties.
DIN 529 / DIN 3570
German Standards for hook bolts, U-bolts, and fastening hardware.
ASTM A307 / A325
American Standards for carbon steel bolts and structural bolts.

Material Grade for NOVSA S Bolt

Material Grade

Standard

Properties / Advantages

Mild Steel (MS – IS 2062 E250/E275)

Indian Standard

Economical, good weld ability, suitable for general scaffolding use.

Carbon Steel (S235JR / S275JR / S355JR)

EN 10025 (European Standard)

High strength, excellent toughness, ideal for medium to heavy-duty scaffolding.

Alloy Steel (Custom Grade)

ASTM / EN Standards

Enhanced hardness & durability, suitable for specialized applications.

Stainless Steel (SS 304 / SS 316)

ASTM / EN Standards

Corrosion-resistant, best for outdoor, marine, and long-term applications.