top of page


CARRIAGE BOLTS

Also known as a “Cup Square” bolt, has a domed head. The square section under the head grips into the part being fastened preventing the bolt from turning when the nut is tightened.
DIN 603
DIMENSIONS
DIN 603

MATERIALS:
• MILD STEEL (MS) GRADE 4.8
• HIGH TENSILE (HT) GRADE 8.8
• STAINLESS STEEL (SS) A2 - 304
• STAINLESS STEEL (SS) A4 - 316
PLATING:
• ZINC
• HOT DIP GALVANISED
• PLAIN
THREADING:
• METRIC
DIAMETERS:
• M5 AND UPWARDS
Contact Us
Follow Us On Social Media
Visit Us
Industries
Telephone
Tel: 031-569 2640
Office Cell/ WhatsApp:
081 026 0006
Unit A1, Glen Murray Industrial Park
13 Moreland Drive
Red Hill
Durban North
4019
​
• Mining
• Engineering
• Construction
• OEM
• Automotive
• Agricultural
• Food & Processing
• Rail
• Sugar
• Paper & Pulp
• Timber
• Distributors / Resellers
• Solar Fasteners
© 2025 by The Fastener Factory
bottom of page