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Cup Head Nuts and Bolts

Get premium galvanised nuts, bolts, and washers for all your outdoor building needs. Our fasteners are hot dip galvanised for maximum corrosion resistance, making them perfect for decking, fencing, and structural use across Brisbane and Queensland. Reliable, strong, and ready for any job.

Frequently Asked Questions

What is a cup head bolt used for?

The domed head sits flush and smooth on the exposed face, commonly used for bolting timber connections like posts, beams, and fencing where a neat, snag-free finish is wanted.

M10, M12, or M16 — which diameter do I need?

Diameter should match your structural connection requirements — larger diameters carry more load; check with your builder or engineer for your specific application.

What length bolt should I choose?

Bolt length should be long enough to pass fully through your timber section plus the nut and washer — measure your timber thickness before ordering.

Are these bolts suitable for coastal areas?

Hot dip galvanised offers strong general corrosion resistance for most applications; for coastal or marine environments, a stainless steel option may be preferred for longer-term performance.

Filters

Product Image

M16 x 75mm Hot Dip Galvanised Cup Head Bolts & Nuts

$2.90 - $2.90
$2.90
$2.90 - $2.90
$2.90

M16 x 75mm Hot Dip Galvanised Cup Head Bolts & Nuts are heavy-duty fasteners designed for structural timber connections that demand superior st...

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$2.90 - $2.90
$2.90
$2.90 - $2.90
$2.90
Product Image

M16 x 360mm Hot Dip Galvanised Cup Head Bolts & Nuts

$13.37 - $13.37
$13.37
$13.37 - $13.37
$13.37

M16 x 360mm Hot Dip Galvanised Cup Head Bolts & Nuts are built for deep, heavy-duty timber fastening in large-scale construction projects. With...

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$13.37 - $13.37
$13.37
$13.37 - $13.37
$13.37
Product Image

M16 x 300mm Hot Dip Galvanised Cup Head Bolts & Nuts

$11.14 - $11.14
$11.14
$11.14 - $11.14
$11.14

M16 x 300mm Hot Dip Galvanised Cup Head Bolts & Nuts are engineered for the most demanding timber construction jobs. With an extra-long 300mm l...

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$11.14 - $11.14
$11.14
$11.14 - $11.14
$11.14
Product Image

M16 x 260mm Hot Dip Galvanised Cup Head Bolts & Nuts

$9.56 - $9.56
$9.56
$9.56 - $9.56
$9.56

M16 x 260mm Hot Dip Galvanised Cup Head Bolts & Nuts are designed for deep, high-strength timber fixing in structural and outdoor applications....

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$9.56 - $9.56
$9.56
$9.56 - $9.56
$9.56
Product Image

M16 x 200mm Hot Dip Galvanised Cup Head Bolts & Nuts

$7.18 - $7.18
$7.18
$7.18 - $7.18
$7.18

M16 x 200mm Hot Dip Galvanised Cup Head Bolts & Nuts are built for maximum strength in deep timber connections. With a heavy-duty 16mm diameter...

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$7.18 - $7.18
$7.18
$7.18 - $7.18
$7.18
Product Image

M16 x 180mm Hot Dip Galvanised Cup Head Bolts & Nuts

$6.40 - $6.40
$6.40
$6.40 - $6.40
$6.40

M16 x 180mm Hot Dip Galvanised Cup Head Bolts & Nuts are designed for high-strength timber connections in large-scale outdoor and structural bu...

View full details
$6.40 - $6.40
$6.40
$6.40 - $6.40
$6.40
Product Image

M16 x 150mm Hot Dip Galvanised Cup Head Bolts & Nuts

$5.46 - $5.46
$5.46
$5.46 - $5.46
$5.46

M16 x 150mm Hot Dip Galvanised Cup Head Bolts & Nuts are the go-to choice for serious structural timber work. With a strong 16mm diameter and e...

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$5.46 - $5.46
$5.46
$5.46 - $5.46
$5.46
Product Image

M16 x 120mm Hot Dip Galvanised Cup Head Bolts & Nuts

$4.51 - $4.51
$4.51
$4.51 - $4.51
$4.51

M16 x 120mm Hot Dip Galvanised Cup Head Bolts & Nuts are engineered for strong, long-lasting timber connections in outdoor and structural appli...

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$4.51 - $4.51
$4.51
$4.51 - $4.51
$4.51
Product Image

M16 x 100mm Hot Dip Galvanised Cup Head Bolts & Nuts

$3.87 - $3.87
$3.87
$3.87 - $3.87
$3.87

M16 x 100mm Hot Dip Galvanised Cup Head Bolts & Nuts are built for heavy-duty timber construction where extra strength and durability are essen...

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$3.87 - $3.87
$3.87
$3.87 - $3.87
$3.87
Product Image

M12 x 75mm Hot Dip Galvanised Cup Head Bolts & Nuts

$2.25 - $2.25
$2.25
$2.25 - $2.25
$2.25

M12 x 75mm Hot Dip Galvanised Cup Head Bolts & Nuts are ideal for strong, secure timber fixings in outdoor and structural applications. Featuri...

View full details
$2.25 - $2.25
$2.25
$2.25 - $2.25
$2.25
Product Image

M12 x 300mm Hot Dip Galvanised Cup Head Bolts & Nuts

$7.95 - $7.95
$7.95
$7.95 - $7.95
$7.95

M12 x 300mm Hot Dip Galvanised Cup Head Bolts & Nuts are engineered for the most demanding timber joinery applications. With an extra-long 300m...

View full details
$7.95 - $7.95
$7.95
$7.95 - $7.95
$7.95
Product Image

M12 x 260mm Hot Dip Galvanised Cup Head Bolts & Nuts

$6.95 - $6.95
$6.95
$6.95 - $6.95
$6.95

M12 x 260mm Hot Dip Galvanised Cup Head Bolts & Nuts are built for deep anchoring in large-scale timber construction. With a long 260mm reach a...

View full details
$6.95 - $6.95
$6.95
$6.95 - $6.95
$6.95
Product Image

M12 x 200mm Hot Dip Galvanised Cup Head Bolts & Nuts

$3.95 - $3.95
$3.95
$3.95 - $3.95
$3.95

M12 x 200mm Hot Dip Galvanised Cup Head Bolts & Nuts are designed for the toughest timber construction tasks. With a full 200mm length and stro...

View full details
$3.95 - $3.95
$3.95
$3.95 - $3.95
$3.95
Product Image

M12 x 180mm Hot Dip Galvanised Cup Head Bolts & Nuts

$3.65 - $3.65
$3.65
$3.65 - $3.65
$3.65

M12 x 180mm Hot Dip Galvanised Cup Head Bolts & Nuts are built for deep, heavy-duty timber connections in outdoor and structural applications. ...

View full details
$3.65 - $3.65
$3.65
$3.65 - $3.65
$3.65
Product Image

M12 x 150mm Hot Dip Galvanised Cup Head Bolts & Nuts

$3.35 - $3.35
$3.35
$3.35 - $3.35
$3.35

M12 x 150mm Hot Dip Galvanised Cup Head Bolts & Nuts are engineered for superior strength and durability in outdoor timber construction. Ideal ...

View full details
$3.35 - $3.35
$3.35
$3.35 - $3.35
$3.35
Product Image

M12 x 130mm Hot Dip Galvanised Cup Head Bolts & Nuts

$2.85 - $2.85
$2.85
$2.85 - $2.85
$2.85

M12 x 130mm Hot Dip Galvanised Cup Head Bolts & Nuts are perfect for securing thick timber in demanding outdoor environments. With a strong 12m...

View full details
$2.85 - $2.85
$2.85
$2.85 - $2.85
$2.85
Product Image

M12 x 100mm Hot Dip Galvanised Cup Head Bolts & Nuts

$2.45 - $2.45
$2.45
$2.45 - $2.45
$2.45

M12 x 100mm Hot Dip Galvanised Cup Head Bolts & Nuts are designed for heavy-duty timber connections in outdoor and structural applications. Wit...

View full details
$2.45 - $2.45
$2.45
$2.45 - $2.45
$2.45
Product Image

M10 x 75mm Hot Dip Galvanised Cup Head Bolts & Nuts

$1.49 - $1.49
$1.49
$1.49 - $1.49
$1.49

M10 x 75mm Hot Dip Galvanised Cup Head Bolts & Nuts are ideal for structural timber connections and outdoor construction projects. Manufactured...

View full details
$1.49 - $1.49
$1.49
$1.49 - $1.49
$1.49
Product Image

M10 x 300mm Hot Dip Galvanised Cup Head Bolts & Nuts

$4.86 - $4.86
$4.86
$4.86 - $4.86
$4.86

M10 x 300mm Hot Dip Galvanised Cup Head Bolts & Nuts are built for the most demanding timber construction jobs. With a full 300mm length, they’...

View full details
$4.86 - $4.86
$4.86
$4.86 - $4.86
$4.86
Product Image

M10 x 260mm Hot Dip Galvanised Cup Head Bolts & Nuts

$4.51 - $4.51
$4.51
$4.51 - $4.51
$4.51

M10 x 260mm Hot Dip Galvanised Cup Head Bolts & Nuts are the go-to solution for securing thick timber in large-scale outdoor and structural pro...

View full details
$4.51 - $4.51
$4.51
$4.51 - $4.51
$4.51
Product Image

M10 x 200mm Hot Dip Galvanised Cup Head Bolts & Nuts

$2.26 - $2.26
$2.26
$2.26 - $2.26
$2.26

M10 x 200mm Hot Dip Galvanised Cup Head Bolts & Nuts are designed for maximum hold in thick timber and structural applications. The extended 20...

View full details
$2.26 - $2.26
$2.26
$2.26 - $2.26
$2.26
Product Image

M10 x 180mm Hot Dip Galvanised Cup Head Bolts & Nuts

$2.07 - $2.07
$2.07
$2.07 - $2.07
$2.07

M10 x 180mm Hot Dip Galvanised Cup Head Bolts & Nuts are engineered for deep, secure timber fastening in large-scale outdoor construction. With...

View full details
$2.07 - $2.07
$2.07
$2.07 - $2.07
$2.07
Product Image

M10 x 150mm Hot Dip Galvanised Cup Head Bolts & Nuts

$1.75 - $1.75
$1.75
$1.75 - $1.75
$1.75

M10 x 150mm Hot Dip Galvanised Cup Head Bolts & Nuts are ideal for deep timber connections where strength and corrosion resistance are essentia...

View full details
$1.75 - $1.75
$1.75
$1.75 - $1.75
$1.75
Product Image

M10 x 130mm Hot Dip Galvanised Cup Head Bolts & Nuts

$1.57 - $1.57
$1.57
$1.57 - $1.57
$1.57

M10 x 130mm Hot Dip Galvanised Cup Head Bolts & Nuts are built for serious strength in outdoor timber construction. With a long 130mm shaft and...

View full details
$1.57 - $1.57
$1.57
$1.57 - $1.57
$1.57

Get premium galvanised nuts, bolts, and washers for all your outdoor building needs. Our fasteners are hot dip galvanised for maximum corrosion resistance, making them perfect for decking, fencing, and structural use across Brisbane and Queensland. Reliable, strong, and ready for any job.

Frequently Asked Questions

What is a cup head bolt used for?

The domed head sits flush and smooth on the exposed face, commonly used for bolting timber connections like posts, beams, and fencing where a neat, snag-free finish is wanted.

M10, M12, or M16 — which diameter do I need?

Diameter should match your structural connection requirements — larger diameters carry more load; check with your builder or engineer for your specific application.

What length bolt should I choose?

Bolt length should be long enough to pass fully through your timber section plus the nut and washer — measure your timber thickness before ordering.

Are these bolts suitable for coastal areas?

Hot dip galvanised offers strong general corrosion resistance for most applications; for coastal or marine environments, a stainless steel option may be preferred for longer-term performance.