Name: ISEO R6 65/55 mm Euro-profile cylinder with flat thumbturn (885965559..5)
Brand: ISEO

ISEO 885965559..5 — 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

ISEO 885965559..5 length sections: C 65 / D 55 mm · L 120 mm — Drawn by this site from the catalogue parameters on this page to show C/D sections and overall length L; not the actual product outline or an installation drawing. Check side functions and measurement references against the original catalogue.

Cylinder dimensions

Dimensions from model documentation
Specifications	Dimensions from model documentation
Overall length L	120 mm
Side C length	65 mm (thumbturn side)
Side D length	55 mm

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

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Specifications

Construction: Euro-profile cylinder with flat thumbturn
Overall length L: 120 mm
Side C length: 65 mm (thumbturn side)
Side D length: 55 mm
Operating function: Flat thumbturn operation inside
Pin configuration: 6 pins
Cam: 30° DIN cam
Keys supplied: 5 keys
Key material: Nickel-plated brass flat key

How to check these dimensions

This catalogue row gives L=120 mm, C=65 mm, D=55 mm. C and D differ by 10 mm; the sides have unequal lengths. Confirm the side functions and installation orientation before reversing.

Check the door and cylinder guards using the measurement references in the corresponding drawing. The dimension diagram only explains length relationships and cannot replace an installation template.

Operation and construction of this specification

The inside has a flat thumbturn, so also check clearance around it. The round-thumbturn version with the same C/D has a different shape; length alone does not establish interchangeability.

This page lists 6 pins and 30° DIN cam for R6; when comparing other series, also check the key system. Similar appearance does not establish key interchangeability.

Limitations

Parameters correspond to the cited catalogue edition; current supply and regional configurations require manufacturer confirmation.
Check the C/D order, cam and operating arrangement on both sides together; overall length alone does not establish compatibility.
The ..5 in the code is retained from the catalogue; confirm the complete ordering format with the manufacturer.

Sources

ISEO Catalogue 01 .42, page 1-91

Manufacturer documents are provided in their original language.

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