Name: CISA Astral Tekno PRO 30/40 double cylinder with knob shaft (10M3T282012)
Brand: CISA

CISA 10M3T282012 — Official series illustration, not a photo of this exact size variant; consult model specifications. — Official series illustration, not a photo of this exact size variant; consult model specifications.Image source

10M3T282012 dimension diagram: side B 39.5 mm, side A 29.5 mm, overall body length 69 mm — Our dimension diagram follows the corresponding catalogue row; it is not a product view or machining template; the projecting knob shaft is excluded from body dimension L.

Cylinder dimensions

Dimensions from model documentation
Specifications	Dimensions from model documentation
Dimension A	29.5 mm
Dimension B	39.5 mm
Overall length L	69 mm

Measure both sides from the fixing screw. Check the cylinder profile, cam and version.

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Specifications

Key system: Astral Tekno PRO
Construction: Double cylinder with knob shaft
Nominal size: 30/40
Dimension A: 29.5 mm
Dimension B: 39.5 mm
Overall length L: 69 mm
Coding construction: 10-pin-position coding system
Body construction: Brass body with controlled-break cuts
Key type: Reversible nickel-plated brass flat key
Operating mechanism: Knob-shaft operation

Operation and dimensions of this version

The knob shaft illustrated for 10M3T282012 is on side B; Body B=39.5 mm, key side A=29.5 mm; L=69 mm excludes the projecting knob shaft. The knob is an operating component to verify separately; a shaft configuration does not mean that a complete knob is supplied.

Key system and installation checks

This series uses controlled-break cuts and bilateral steel control pins. Security Card is used for protected key duplication; it is not proof of universal key compatibility.

When selecting, first record nominal size 30/40 for 10M3T282012, then verify the actual 29.5+39.5=69 mm against the drawing. Nominal size is an ordering identifier; adding its two integers does not give the actual overall length.

Limitations

Dimensions are divided at the central reference in the catalogue drawing; a and B do not automatically designate the outside and inside of the door. Installation also requires checking the lock-body cam interface, door thickness and escutcheon thickness.
Catalogue model numbers and dimensions do not establish current stock availability or certification of the complete door; Before purchase, check the actual supplied product's identification plate and the manufacturer's installation documentation.
The catalogue lists series 06353, 06355, 06356 and 06357 knobs as available on request, not as standard equipment for this row.

Sources

CISA 2026 English catalogue, PDF page 93 / printed page 89

Manufacturer documents are provided in their original language.

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