Name: CISA AP4 S 30/10 half cylinder (10P31402012)
Brand: CISA

CISA 10P31402012 — 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

10P31402012 dimension diagram: side B 10 mm, side A 29.5 mm, overall body length 39.5 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.

Product dimensions

Dimensions from model documentation
Specifications	Dimensions from model documentation
Dimension A	29.5 mm
Dimension B	10 mm
Overall length L	39.5 mm

Compare the overall dimensions and mounting points with the documentation for the specific product.

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Specifications

Key system: AP4 S
Construction: Half cylinder
Nominal size: 30/10
Dimension A: 29.5 mm
Dimension B: 10 mm
Overall length L: 39.5 mm
Coding construction: Ordering-table pin-position count: 12
Body construction: Brass body with a dual-material anti-snap reinforcing core
Key type: Reversible nickel-silver flat key with a moving element
Operating mechanism: Cam adjustable to 8 positions
Catalogue key part number: 1.00810.00.0

Operation and dimensions of this version

10P31402012 has key operation on one side only, A=29.5 mm, with the other section B=10 mm; Nominal size 30/10 must not be interpreted as a double cylinder accepting keys on both sides. The cam adjusts to 8 positions; check the starting angle and lock-body drive requirements when matching components.

Key system and installation checks

AP4 S key part number is 1.00810.00.0; it has a long neck to accommodate protective escutcheons. The series includes carbonitrided-steel pins and differently shaped driving pins; Security Card is used for protected key duplication; it does not establish compatibility between different systems.

When selecting, first record nominal size 30/10 for 10P31402012, then verify the actual 29.5+10=39.5 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.

Sources

CISA 2026 English catalogue, PDF page 74 / printed page 70

Manufacturer documents are provided in their original language.

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