Fasteners for assembly and maintenance, the sourcing map Square Head Bolt aim to deliver secure, high-strength joins. Tradespeople and DIY enthusiasts gain confidence from consistent sizing and robust construction that make installations quicker. Are these M6 square-head bolts suited to your workshop and repair needs?
⚡ At a Glance
- • Holding Strength: Carbon steel Grade 8.8 construction with fully threaded M6 x 16mm shaft for reliable clamping and good wear resistance
- • Best for: Assembly and maintenance of machinery, rail, electrical connections, construction and DIY furniture projects
- • Not ideal for: Applications that require stainless-steel corrosion resistance or specialised marine-grade fixings
Square-head bolts come as M6 x 16mm, zinc plated with a 14mm square head. The fully threaded shaft and grade 8.8 carbon steel deliver strength and impact resistance for general assembly tasks.
Secure load distribution - with a large square head profile
The head measures 14mm x 14mm x 2mm, creating a broad bearing surface that spreads clamping forces across the mating material. Fully threaded M6 engagement ensures the nut can thread along the shaft for consistent clamping.
Wider bearing area reduces pull-through on soft panels and keeps assemblies stable under vibration. Ideal where a broad mating surface is required, such as guardrails and appliance mounts.
Improved corrosion resistance - with zinc-plated finish
Zinc plating forms a protective metallic layer over the carbon-steel substrate, helping to slow oxidation and surface rust. The finish gives a gold tone appearance while shielding the steel from moisture exposure.
Surface protection helps extend service life in typical indoor and many outdoor settings. Suitable for general-purpose uses where enhanced surface corrosion resistance is preferred over plain steel.
High tensile durability - with Grade 8.8 carbon steel
Grade 8.8 designation indicates medium-high tensile strength and good impact resistance for carbon-steel fasteners, supporting mechanical loads and wear. The fully threaded design maintains strength along the engaged length.
Reliable for mechanical assemblies, rail and equipment where strength matters. Wear resistance supports repeated maintenance and removal without rapid degradation.
✨ The 4 Key Reasons for sourcing map Square Head Bolt
- Large square head, disperses load evenly, reducing pull-through on soft or thin panels
- Fully threaded M6 shaft, allows consistent nut engagement along the full shaft length
- Pack of 20, keeps spares handy for repairs and small assembly projects
- Wrench-friendly square head, makes tightening with pliers or spanners quick and reliable
📋 Technical Details at a Glance
- Category: Fasteners
- Material: Carbon Steel
- Finish: Zinc Plated, Gold Tone
- Grade: 8.8
- Thread Size: M6 x 16mm (M6 x 0.63")
❓ Frequently Asked Questions
Q: Are nuts and washers included in the package?
A: No. The pack contains 20 square head bolts only, and installation normally requires a nut and a washer which are not supplied.
Q: What tools are needed to install these bolts?
A: A wrench or plier is required to grip and turn the square head for tightening; standard M6 nuts fit the threaded shaft.
Q: How is corrosion resistance handled?
A: A zinc-plated finish is applied to help prevent rust and extend surface life under typical conditions.
🏆 Our Verdict
The sourcing map Square Head Bolt suits tradespeople, maintenance teams and DIYers who need consistent M6 fixings for assembly tasks. The combination of a broad square head, fully threaded M6 x 16mm shaft and Grade 8.8 carbon steel with zinc plating delivers dependable clamping and surface protection. While individual needs vary, the pack-of-20 format and robust construction offer sensible long-term value for routine repair and build work.
