Samac V830CSH100 M8x30mm BZP Cup Square Hex (100) V830CSH100 Professional-grade cup square hex bolt, also known as a carriage bolt or coach bolt Heavy-duty fastener designed for timber-to-timber and timber-to-metal construction Anti-spin square shoulder bites into the wood for a secure, self-locking fit Smooth domed mushroom head provides a clean, snag-free finish Rounded head offers added security and helps prevent external tampering Bright Zinc Plated (BZP) finish provides corrosion resistance in internal or dry environments Typically installed in pre-drilled holes with the square neck hammered into place Size: M8 x 30mm Pack quantity: 100 The Samac V830CSH100 M8x30mm BZP Cup Square Hex Bolt is a reliable, professional-quality fastening solution for demanding timber applications. Its square shoulder design ensures excellent grip and stability during installation, while the domed head delivers a neat and secure finish. With Bright Zinc Plating for added protection and a versatile construction profile, this bolt is ideally suited to a wide range of joinery, framing, and general building projects where strength, durability, and presentation matter.