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Security Machine Screws Countersunk

Collection: Security Machine Screws Countersunk

Countersunk metal thread (machine) screws from our high-performance security screw range are crafted for use with a nut and washer to create a 'bolted' connection or to screw directly into a threaded component, ensuring a tamper-proof finish.

Made from high-grade 304 stainless steel, providing excellent corrosion protection, making them suitable for secure and long-lasting applications. The countersunk design allows for a flush finish, enhancing both the aesthetic and functional aspects of the assembly.

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15 products

Security Machine Screws CSK M6 X 40mm - Box 100

Security Machine Screws CSK M6 X 40mm - Box 100

Regular price $89.70
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Security Machine Screws CSK M6 X 30mm - Box 100

Security Machine Screws CSK M6 X 30mm - Box 100

Regular price $76.83
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Security Machine Screws CSK M6 X 25mm - Box 100

Security Machine Screws CSK M6 X 25mm - Box 100

Regular price $70.75
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Security Machine Screws CSK M6 X 20mm - Box 100

Security Machine Screws CSK M6 X 20mm - Box 100

Regular price $66.02
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Security Machine Screws CSK M6 X 12mm - Box 100

Security Machine Screws CSK M6 X 12mm - Box 100

Regular price $55.64
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Security Machine Screws CSK M5 X 30mm - Box 100

Security Machine Screws CSK M5 X 30mm - Box 100

Regular price $78.89
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Security Machine Screws CSK M5 X 25mm - Box 100

Security Machine Screws CSK M5 X 25mm - Box 100

Regular price $74.44
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Security Machine Screws CSK M5 X 20mm - Box 100

Security Machine Screws CSK M5 X 20mm - Box 100

Regular price $69.61
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Security Machine Screws CSK M5 X 16mm - Box 100

Security Machine Screws CSK M5 X 16mm - Box 100

Regular price $63.00
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Security Machine Screws CSK M5 X 12mm - Box 100

Security Machine Screws CSK M5 X 12mm - Box 100

Regular price $50.70
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Security Machine Screws CSK M4 X 25mm - Box 100

Security Machine Screws CSK M4 X 25mm - Box 100

Regular price $44.59
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Security Machine Screws CSK M4 X 20mm - Box 100

Security Machine Screws CSK M4 X 20mm - Box 100

Regular price $38.26
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Security Machine Screws CSK M4 X 16mm - Box 100

Security Machine Screws CSK M4 X 16mm - Box 100

Regular price $32.58
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Security Machine Screws CSK M4 X 12mm - Box 100

Security Machine Screws CSK M4 X 12mm - Box 100

Regular price $26.33
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Security Machine Screws Countersunk M4 X 10mm - Box 100

Security Machine Screws Countersunk M4 X 10mm - Box 100

Regular price $24.98
Sale price Regular price

About Our Nuts and Bolts Range

Fasten Up carries hex bolts and nuts in zinc plated, galvanised and 304 and 316 stainless steel, including 8.8 high tensile and structural assemblies, plus coach bolts, U-bolts, eye bolts, purlin bolts, machine screws, socket screws, grub screws and threaded rod. Nuts and washers are stocked to suit, from standard hex nuts and nyloc locking nuts through to flat, spring and structural washers.

Thread size, length, grade and finish are listed on every product so you can pick the right bolt and nut combination for the connection. Everything is packed in trade quantities, dispatched quickly from Chelsea Heights in Melbourne, with delivery Australia-wide or click and collect.

Fast Dispatch from Melbourne
Click and Collect Available
Secure Payment