11 catalogued sizes, dimensioned to ISO 10664 (hexalobular internal driving feature). Pick any row and the technical drawing redraws to it.
Torx Keys (L-Key and T-Handle) to ISO 10664 (hexalobular internal driving feature): the full dimensional table is reproduced below. 11 sizes are held in the table below, and the technical drawing redraws to whichever row you select.
Standard
ISO 10664 (hexalobular internal driving feature)
Catalogued sizes
11
Dimensions are nominal values from the governing standard. Confirm the tolerance class for your application before ordering.
Torx Keys (L-Key and T-Handle) — ISO 10664 (hexalobular internal driving feature)
Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.
Sends the selected values to the quote form below.
Request a Quotation for Torx Keys (L-Key and T-Handle)
The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.
Dimensions & Specifications (ISO 10664 (hexalobular internal driving feature))
Every row below is a starting point for the customizer above — pick any size and the drawing will redraw to that row.
Torx size
Typical mating screw
Form
Notes
T6
M2 hexalobular screw
L-key
electronics and instrument assembly
T8
M2.5 hexalobular screw
L-key
electronics and instrument assembly
T10
M3 hexalobular screw
L-key or T-handle
general light assembly
T15
M3.5 hexalobular screw
L-key or T-handle
general light assembly
T20
M4 hexalobular screw
L-key or T-handle
general assembly
T25
M5 hexalobular screw
L-key or T-handle
general assembly, decking screws
T27
M5 / M6 hexalobular screw
L-key or T-handle
construction screws
T30
M6 hexalobular screw
L-key or T-handle
construction and structural screws
T40
M8 hexalobular screw
L-key or T-handle
heavy assembly
T45
M10 hexalobular screw
L-key
heavy assembly
T50
M12 hexalobular screw
L-key
heavy assembly
Torx Keys (L-Key and T-Handle) are tools manufactured to ISO 10664 (hexalobular internal driving feature). This page lists the full dimensional range with the key specifications engineers need to select and specify them.
What Are Torx Keys (L-Key and T-Handle)?
Torx Keys (L-Key and T-Handle) are tools defined by ISO 10664 (hexalobular internal driving feature). They are selected by nominal size and the dimensional characteristics shown below, and are available in a range of materials and finishes to suit the application and environment.
Materials & Finishes
Common materials include carbon steel (typically zinc plated or hot-dip galvanized), hardened or case-hardened steel where wear matters, and stainless steel A2 (304) or A4 (316) for corrosion resistance. Specify the material, hardness where relevant, and the surface finish appropriate to your application and environment.
Specification Guides
Each size, material and standard of Torx Keys (L-Key and T-Handle) has its own reference page with the figures for that one configuration.
Goes With
Hardware commonly specified alongside Torx Keys (L-Key and T-Handle).
Pricing
Torx Keys (L-Key and T-Handle) are supplied to order. Pricing starts from approximately US$0.40 per piece for standard sizes in the catalog specification; final pricing depends on size, material, finish and order quantity (MOQ applies). Submit your exact configuration with the quote form above.
Torx Keys (L-Key and T-Handle) — ISO 10664 (hexalobular internal driving feature)
This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.
01
Cold heading
Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail.
Head dimensions and under-head radius checked at set-up and per shift.
02
Thread rolling
Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch.
Go / no-go ring gauges to ISO 965 tolerance class 6g.
03
Heat treatment
Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it.
Core hardness and tensile tested per lot to ISO 898-1.
04
Surface treatment
Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list.
Coating thickness and neutral salt spray hours to ISO 9227.
Frequently Asked Questions
Which standard governs Torx Keys (L-Key and T-Handle)?
Torx Keys (L-Key and T-Handle) are manufactured to ISO 10664 (hexalobular internal driving feature). The dimensional values on this page follow that standard.
Which sizes of Torx Keys (L-Key and T-Handle) does Engineering Hardware supply?
The table on this page lists 11 sizes for Torx Keys (L-Key and T-Handle), ranging from T6 to T50. Sizes outside the table can be quoted on request.
In which materials are Torx Keys (L-Key and T-Handle) supplied?
Torx Keys (L-Key and T-Handle) are supplied in chrome-vanadium steel, with finishes including zinc plating, hot-dip galvanizing and black oxide. Choose material and finish to suit the load and the service environment for Torx Keys (L-Key and T-Handle).
How do I request a quotation?
Use the parametric drawing on this page to set the exact configuration (size, material, finish) and click "Request this configuration" — a specialist from Engineering Hardware will respond within one business day.
Need a fastener quote or a spec sheet?Message our engineers on WhatsApp — send a drawing or DIN number and get pricing back fast.Start WhatsApp Chat →
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