Buy Torx Screws Online in Australia
Torx screws carry the fastener half of the Torx drive system — a six-point star socket in the head that matches a Torx driver or power bit. The six contact points spread load more evenly than a Phillips or slotted head, so the driver holds its engagement under higher torque instead of camming out — which is why Torx turns up across production assembly, automotive work, structural fastening and any job where a fastener gets removed and reinstalled many times over its service life. AIMS Industrial stocks Torx screws across machine, self-tapping, self-drilling and security variants, in zinc-plated steel and A2 (304) / A4 (316) stainless steel, from Champion and Inox World. For more on selection, see our Torx Bit Sizes Guide.
Torx Screw Selection — Quick Reference
| Screw Type | Typical Drive Size | Best For |
|---|---|---|
| Pan / countersunk machine screw | T10–T25 | Assembly into a pre-tapped hole or nut |
| Pan / countersunk self-tapping screw | T10–T25 | Sheet metal and plastic, pre-drilled pilot hole |
| Self-drilling (tek) screw | T15–T30 | Metal roofing, cladding, light-gauge steel — no pre-drill needed |
| Security button / countersunk screw | T10–T25 (pin-in-Torx) | Tamper-resistant fastening, public infrastructure |
| Socket cap screw | T10–T30 | Machinery and fixtures needing a recessed, high-torque head |
| Decking screw | T25–T40 | Structural and outdoor decking, A2/A4 stainless |
Critical: match Torx size exactly to the driver or bit — an undersized bit rounds the drive socket, an oversized one won't seat. Security (pin-in-Torx) screws need a matching security bit; a standard Torx bit will not engage them. Always confirm against the size marking or product spec sheet rather than assuming from gauge or thread size alone. Companion: machine screws, self-tapping screws, self-drilling screws, security fasteners.
Torx Screw Types We Stock
Machine screws
Champion's Pan Head and Countersunk Torx Machine Screw assortment kits and refills, plus a stainless (TPX) refill and Champion's CA1886 stainless machine screw pack, cover general assembly into pre-tapped holes or nuts.
Self-tapping screws
Champion's pan head and countersunk Torx self-tapping assortment kits (CA1776, CA1778) and matching refills cut their own thread into a pre-drilled pilot hole — the standard choice for sheet metal and plastic assembly.
Self-drilling (tek) screws
Champion's CA1782 pan head self-drilling kit and refill, and Inox World's stainless security self-drilling screws, drill and thread in a single pass — no pre-drilling required, which is why self-drilling is the go-to for roofing and light-gauge steel framing.
Security (pin-in-Torx) screws
Inox World's A2 (304) stainless security screw range covers button head and countersunk profiles across machine, self-tapping and self-drilling types — including the ISO 7380 button head machine screw. Champion's CA1784 kit packs a 270-piece security button head assortment. All are built with the raised centre pin that blocks a standard Torx driver.
Socket cap and button head screws
Inox World's Torx Socket Cap Screw (A2 304, M3–M4) and the Torx Button Head Screw assortment refill give a recessed, high-torque head for machinery and fixture work in metric sizes.
Decking screws
Inox World's Torx Drive Decking Screw is stocked in both A2 (304) and A4 (316) stainless steel across common gauges (10G, 12G, 14G), in trade and retail pack sizes — A4 is the pick for coastal or marine-adjacent decking where extra chloride resistance matters.
Assortment kits and refill packs
Champion's cabinet-style kits pack a spread of common sizes for a service van or workshop bench that needs to cover unpredictable jobs. Once a size runs low, single-size refill packs top up just that size rather than replacing the whole kit.
Stainless vs Zinc-Plated
A2 (304) stainless is the standard spec for general outdoor, washdown and security-fastener use; A4 (316) adds chloride resistance for coastal and marine-adjacent decking. Champion's assortment range is mostly zinc-plated steel for dry, indoor, general assembly work, with a stainless (TPX) line where corrosion resistance is needed. Don't downgrade to zinc-plated on a coastal or washdown job to save a few cents a screw — the callback cost of corroded fasteners outweighs the saving.
Brands Stocked at AIMS
Champion supplies our assortment kits and refill packs — practical for maintenance teams and service vehicles that need a spread of sizes on hand without carrying dozens of separate boxes. Inox World supplies our single-size A2/A4 stainless Torx screws, including the security and decking ranges, for predictable production and outdoor fastening work.
Choosing the Right Torx Screw
- Machine vs self-tapping vs self-drilling — machine screws need an existing tapped hole or nut; self-tapping screws need a pre-drilled pilot hole; self-drilling screws need neither.
- Material — A2 (304) stainless for general outdoor and security use, A4 (316) for coastal/marine decking, zinc-plated steel for dry indoor assembly.
- Head style — pan head for general-purpose bearing surface, countersunk for a flush finish, button head for a low-profile dome with good head strength.
- Standard vs security — a pin-in-Torx security screw needs a matching security bit; a standard Torx bit will not engage it.
- Assortment kit vs single-size — a kit suits unpredictable service work; single-size stock suits high-volume, predictable production runs.
Companion Collections
Torx screws are one part of AIMS's broader screw range — for the full range across all drive types, see the Screws hub. For related fastener types, browse Machine Screws, Self-Tapping Screws, Self-Drilling Screws, Security Fasteners, Stainless Fasteners and Decking Screws. For the matching drive tools, see Torx Screwdrivers and Torx Power Bits.
Order from AIMS
Need help speccing head style, drive size, material or pack quantity for a production run, maintenance contract or one-off job? Call us on (02) 9773 0122, get in touch via Contact Us, or request a quote for trade or bulk pricing. As a proudly Australian-owned business, AIMS stocks locally for fast, reliable supply across Australian trade and industry.
Frequently Asked Questions
What is a Torx screw?
A Torx screw has a six-point star-shaped drive socket in the head, matching a Torx driver or power bit. The six contact points spread torque more evenly than a slot or Phillips head, so the driver holds its engagement instead of camming out — which is why Torx is standard on production, automotive and structural fastening.
What's the difference between a self-tapping and a self-drilling Torx screw?
A self-tapping screw cuts its own thread into a pre-drilled pilot hole. A self-drilling (tek) screw has a drill-point tip that bores its own hole and cuts its own thread in one pass, so no pre-drilling is needed — the standard choice for metal roofing, cladding and light-gauge steel framing.
Can a standard Torx bit remove a security Torx screw?
No. A security (pin-in-Torx) screw has a raised pin in the centre of the drive socket that blocks a standard Torx bit — only a security Torx bit with a hole through its tip will engage it.
Should I use A2 or A4 stainless steel for outdoor Torx screws?
A2 (304) stainless suits general outdoor and washdown use. A4 (316) adds chloride resistance and is the better choice for coastal or marine-adjacent decking and fixings, such as Inox World's A4 Torx drive decking screws.
Why does AIMS stock both Champion assortment kits and Inox World single-size stainless screws?
Champion kits suit maintenance teams and service vehicles that need a spread of sizes ready for unpredictable jobs. Inox World single-size stainless stock suits predictable, higher-volume production and outdoor fastening where one size is used repeatedly.
Do I need a different driver for Torx screws than for Torx power bits?
No — standard Torx screws work with any standard Torx driver or power bit in the matching size. See our Torx Screwdrivers and Torx Power Bits ranges for matching drivers.