Image | Product + | Brand | Price | Availability | Qty |
M12x230 Cup Square Hex Coach Bolts Zinc Plated [Incl. Nuts & Washers] (Pack of 5)Product Code: FM12-230CB-Z5 |
TIK Products |
£7.21
Ex VAT: £6.01 |
63 Packs In Stock |
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M12x230 Cup Square Hex Coach Bolts Zinc Plated (Pack of 10)Product Code: HX12-230CB-Z |
HX Fixings |
£12.66
Ex VAT: £10.55 |
3 Days |
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M12x230 Cup Square Hex Coach Bolts Zinc Plated (Pack of 15)*Product Code: FM12-230CB-Z |
Fixings Megastore |
£18.05
Ex VAT: £15.04 |
21 Packs In Stock |
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A carriage bolt, also known as coach bolt or as cup square hex bolts, has a domed head, and the shank is topped by a short square section under the head. The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened. A rib neck carriage bolt has several longitudinal ribs instead of the square section, to grip into a metal part being fixed.
Zinc coatings prevent oxidation of the protected metal to create a longer lasting finish. It does this by forming a barrier and by acting as a sacrificial anode if this barrier is damaged. Zinc oxide is a fine white dust that (in contrast to iron oxide) does not trigger a breakdown of the substrates surface integrity as it is formed. The zinc oxide, if left intact, can act as a barrier to further oxidation, in a way similar to the protection afforded to aluminum and stainless steels by their oxide layers.
Fastener Specifications | |
Head Type | Cup Square Hex |
Bolt Diameter | 12mm |
Fixing Length | 230mm |
Thread Length | 100mm |
Thread Type | Metric |
Thread Pitch | 1.75mm |
Bolt Finish | Zinc Plated |
Material Grade | 4.6 Mild Steel |
Bolt Specification | DIN 603/1232 |