Buy Inhex Socket Sets Online in Australia
Inhex Sockets and Socket Sets — Quick Reference
An inhex socket (also called a hex bit socket or Allen socket) is a socket-drive tool with a hex key profile built into the end, so a ratchet, torque wrench or impact wrench can drive socket head cap screws, button head screws and grub screws. This collection covers single inhex sockets and inhex socket sets from Ko-Ken, Stahlwille and Trax, in 1/4", 3/8", 1/2" and 3/4" drive, metric and imperial (A/F). Not sure which drive size or set suits your job? Our Socket Set Guide: Drive Sizes, Deep vs Shallow & Metric vs Imperial covers selection in detail.
| Type | Best For | Brands |
|---|---|---|
| Single inhex sockets — short | Socket head cap screws with enough clearance for a standard-length bit | Ko-Ken, Stahlwille, Trax |
| Single inhex sockets — long and extra long | Recessed or counterbored screws, and fasteners behind flanges or guards | Ko-Ken, Stahlwille, Trax |
| Ball end inhex sockets | Screws that can only be reached at an angle | Stahlwille |
| Spline inhex sockets and sets | Spline-profile socket head fasteners | Stahlwille, Trax |
| Inhex sets on a rail or in a case | Workshop and service kits covering a full size run | Ko-Ken, Trax |
| Value packs | Five- and four-piece packs of the most-used sizes | Stahlwille |
| Impact inhex sets | Impact wrench use on socket head fasteners | Ko-Ken |
Critical: use impact-rated sockets on impact wrenches. Standard inhex sockets are made for hand ratchets and torque wrenches, and can crack under impact. Metric vs imperial: check the fastener before you order. Metric sizes are in mm; imperial sizes are fractions of an inch across flats (A/F). A near-fit hex bit will round the socket head. Drive size: match the socket drive to your ratchet or wrench. Smaller drives suit light work and tight access, and larger drives suit heavier fasteners and higher torque.
Brands in This Range
- Ko-Ken: Ko-Ken inhex sockets come in 1/4", 3/8", 1/2" and 3/4" drive, metric and A/F, including the Z-Series, long series, rail sets and impact sets.
- Stahlwille: Stahlwille inhex sockets come in 1/4" to 3/4" drive in short, long, extra long, ball end and spline versions, plus value packs of the common sizes.
- Trax: Trax offers single hex bit sockets in 1/4", 3/8" and 1/2" drive, spline sets, and 5 to 16-piece hex bit socket sets in metric and imperial.
Expert Support: Need help buying the right product for your application? Contact our team for application-specific advice or request a quote.
Also see our socket sets, sockets, impact sockets & bits, hex keys & Allen wrenches, torque wrenches and hand tools.
People Also Ask — Inhex Sockets
Q: What is an inhex socket?
An inhex socket, also called a hex bit socket or Allen socket, is a socket with a hex key profile on the end instead of a hex cavity. It fits into a socket head cap screw, button head screw or grub screw and is turned with a ratchet, torque wrench or impact wrench. Compared with an L-shaped hex key, it gives you ratchet speed and better control of torque.
Q: How do I choose between metric and imperial inhex sockets?
Measure or check the fastener. Metric inhex sockets are sized in millimetres, and imperial sockets are sized in fractions of an inch across flats (A/F). The two ranges have sizes that sit very close together, but they are not interchangeable. A near-fit bit will round the screw socket and can damage the tool.
Q: Which drive size do I need?
Match it to your ratchet or wrench. 1/4" drive suits small fasteners and tight access, 3/8" drive suits general workshop work, 1/2" drive suits larger fasteners and higher torque, and 3/4" drive suits heavy-duty work. See our Socket Drive Size Guide.
Q: When do I need an impact-rated inhex socket?
Whenever you are using an impact wrench or impact gun. Standard inhex sockets are made for hand ratchets and torque wrenches, and the shock load from an impact tool can crack them. Impact-rated sockets, such as the Ko-Ken impact inhex sets in this collection, are made for that duty.
Q: What are long and ball end inhex sockets for?
Long and extra long sockets reach screws that sit in a recess or behind a flange. Ball end sockets let you work a screw from an angle when a straight approach is blocked. A ball end makes less contact with the screw than a straight hex, so use it to get access and use a straight hex for final tightening. Size help? See our Socket Size Chart.