9 catalogued sizes, dimensioned to ISO 10664 / DIN 3126 C6.3. Pick any row and the technical drawing redraws to it.
Torx and Torx-Plus Screwdriver Bits to ISO 10664 / DIN 3126 C6.3: the full dimensional table is reproduced below. 9 sizes are held in the table below, and the technical drawing redraws to whichever row you select.
Standard
ISO 10664 / DIN 3126 C6.3
Catalogued sizes
9
Dimensions are nominal values from the governing standard. Confirm the tolerance class for your application before ordering.
Torx and Torx-Plus Screwdriver Bits — ISO 10664 / DIN 3126 C6.3
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 and Torx-Plus Screwdriver Bits
The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.
Dimensions & Specifications (ISO 10664 / DIN 3126 C6.3)
Every row below is a starting point for the customizer above — pick any size and the drawing will redraw to that row.
Bit
Drive
Typical mating screw
Service
T10
Torx
M3 hexalobular
electronics, appliance
T15
Torx
M3.5 hexalobular
appliance, light assembly
T20
Torx
M4 hexalobular
general assembly
T25
Torx
M5 hexalobular
decking, general assembly
T27
Torx
M5 u2013 M6 hexalobular
construction screws
T30
Torx
M6 hexalobular
structural timber screws
T40
Torx
M8 hexalobular
heavy assembly
T20 IP
Torx security (pin-in)
M4 tamper-resistant
public and outdoor equipment
T25 IP
Torx security (pin-in)
M5 tamper-resistant
public and outdoor equipment
Torx and Torx-Plus Screwdriver Bits conform to ISO 10664 / DIN 3126 C6.3. As tools, they are specified by the dimensions in the table below; this page also covers materials, finishes and typical uses.
What Are Torx and Torx-Plus Screwdriver Bits?
Torx and Torx-Plus Screwdriver Bits are tools defined by ISO 10664 / DIN 3126 C6.3. 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 and Torx-Plus Screwdriver Bits has its own reference page with the figures for that one configuration.
Goes With
Hardware commonly specified alongside Torx and Torx-Plus Screwdriver Bits.
Pricing
Torx and Torx-Plus Screwdriver Bits are supplied to order. Pricing starts from approximately US$0.14 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 and Torx-Plus Screwdriver Bits — ISO 10664 / DIN 3126 C6.3
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 and Torx-Plus Screwdriver Bits?
Torx and Torx-Plus Screwdriver Bits are manufactured to ISO 10664 / DIN 3126 C6.3. The dimensional values on this page follow that standard.
What is the size range of Torx and Torx-Plus Screwdriver Bits?
The table on this page lists 9 sizes for Torx and Torx-Plus Screwdriver Bits, ranging from T10 to T25 IP. Sizes outside the table can be quoted on request.
In which materials are Torx and Torx-Plus Screwdriver Bits supplied?
Torx and Torx-Plus Screwdriver Bits 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 and Torx-Plus Screwdriver Bits.
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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