M16 Galvanised Coach Bolts – Cup Square Hex

M16 Coach Bolts in a galvanised finish for external applications.

A heavy duty bolt with a mushroom domed shaped head often referred to as carriage bolts or cup square head.

The modern standard is to Din 603 / 555 with gives range of dimensions within a certain tolerance. Although the thread length can vary depending on the source, some are part thread as per the data below, some are thread 100mm and some fully threaded.

Suitable for timber frames, oak beams, heavy duty fencing, play parks etc

Coach Bolts Galvanised Lg
M16 x 50M16 x 55M16 x 60M16 x 65M16 x 70
M16 x 75M16 x 80M16 x 90M16 x 100M16 x 110
M16 x 120M16 x 130M16 x 140M16 x 150M16 x 160
M16 x 170M16 x 180M16 x 200M16 x 220M16 x 240
M16 x 260M16 x 280M16 x 300M16 x 320M16 x 340
M16 x 360M16 x 380M16 x 400M16 x 500M16 x 600
M16 x 800

M16 Coach Bolts  (Cup Square Hex) to Din 603.
Thread M16 x 2.0m Pitch – Head Diameter Min 37.2mm Max 38.8mm – Head Height Min 8.05mm Max 8.95mm
Thread Length for M16
up to 125mm long has a thread of 38mm thread
125mm up to 200mm long has a thread of 44mm thread
200mm Plus has a thread of 57mm thread.
Some of the Coach Bolts come fully threaded please ask if this is important.

Coach Bolts are available in Zinc, Galvanised and Stainless Steel.

Galvanised coach bolts for external use in timber connections.

We also stock Galvanised Nyloc Nuts to suit the galvanised coach bolts.

The Galvanised nylocs have oversized threads to fit the thicker coating of the Galv.

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