Cup Square Hex Bolt & Nut BZP M6x100mm (5)

Cup Square Hex Bolt & Nut BZP M6x100mm (5) by Owlett Jaton (Hexstone Limited, Unifix range) is a Grade 4.8 bright zinc plated carriage bolt supplied complete with a matching hex nut — everything you need for a secure, corrosion-resistant timber fixing. Designed for trade and DIY use alike, these M6 coach bolts are a go-to fastener for joinery, fencing, and heavy structural woodwork where a flush, tamper-resistant head finish is required.

Key Features and Specifications

• Diameter: M6 (6 mm)
• Length: 100 mm
• Pack quantity: 5 bolts + 5 hex nuts
• Material & finish: Steel, Bright Zinc Plated (BZP) for corrosion resistance
• Grade: 4.8
• Standard: DIN 603 (bolt) / DIN 555 (nut)
• Head type: Domed cup head with integral square anti-spin shoulder
• Function: Square shoulder bites into timber, preventing rotation when tightening the nut
• Brand: Owlett Jaton / Hexstone Limited (Unifix range)
• Also known as: Coach bolt, carriage bolt, cup square bolt

Applications

• Joining and clamping timber-to-timber in garden structures, pergolas, and decking frames
• Attaching metal ironmongery, brackets, and hinges to timber posts and beams
• Fencing panel and gate construction
• Playground and outdoor furniture assembly
• General structural woodwork and carpentry where a neat, low-profile bolt head is needed

Why Choose This Product

The Owlett Jaton BZP finish provides reliable corrosion resistance for both indoor and outdoor applications, while Grade 4.8 steel delivers solid mechanical strength for everyday structural tasks. The DIN 603/555 compliance ensures dimensional accuracy and interchangeability with standard metric nuts and washers. Supplied as a matched bolt-and-nut set, this 5-pack is ideal for smaller jobs and repairs without the cost of a full box — trusted by UK tradespeople and available from leading builders’ merchants nationwide.

Delivery in and Around London

We deliver Cup Square Hex Bolt & Nut BZP M6x100mm (5) packs swiftly to customers across London, including inner boroughs such as Croydon, Lewisham, Southwark, Camden, and Hackney, as well as Greater London areas including Enfield, Bexley, Redbridge, and Barnet. We also serve the surrounding counties of Kent, Essex, Surrey, and Hertfordshire. Trade quantities and multi-pack orders are welcome — contact us for volume pricing and same-day despatch options.