Name: CISA AP4 12855P840 straight-shackle padlock | clearance 36×17.5 mm
Brand: CISA

CISA 12855P840 — 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

12855P840 diagram of clear width 36 mm, clear height 17.5 mm and shackle diameter 12 mm — This site's clearance and bar-diameter explanation is drawn from the catalogue; the dashed box indicates clearance directions, not the padlock outline. Manufacturer appearance and dimension drawings can be viewed in the PDF.

Padlock and shackle dimensions

Dimensions from model documentation
Specifications	Dimensions from model documentation
Body width A	84 mm
Shackle clear width C	36 mm
Shackle diameter D	12 mm
Shackle clear height L	17.5 mm
Body thickness S	28 mm

Compare the shackle diameter, inside width and length with the hasp openings. Check clearance for opening.

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Specifications

Series / key system: AP4
Construction: Straight-shackle padlock
Body width A: 84 mm
Shackle clear width C: 36 mm
Shackle diameter D: 12 mm
Shackle clear height L: 17.5 mm
Body thickness S: 28 mm
Lock body material: Solid carbonitrided steel, electroless nickel-plated
Shackle material: Hardened steel, electroless nickel-plated
Catalogue pin count: 11
Key removal conditions: Removable only when locked

Clearance and hasp compatibility

This model has shackle clearance C=36 mm, L=17.5 mm, and shackle diameter D=12 mm; Body width A=84 mm, thickness S=28 mm.

C and L are the two clearance directions of the recess beneath the straight shackle. When checking the hasp, also verify whether the straight shackle can pass through its opening and whether there is enough clearance around the lock body; do not select solely by external body width.

Keys, materials and construction scope

AP4 key system, supplied with Security Card and Code Card; Replaceable cylinder. The catalogue lists a reversible nickel-silver key with a moving element.

AP4 is the key system for this entry. Even if another series has identical A/C/D/L/S dimensions, external dimensions do not establish key or cylinder interchangeability; Retain the series letters or numbers in the complete model.

Limitations

Catalogue dimensions are for preliminary selection; Product outline, opening clearance and supplied configuration follow the manufacturer's instructions for the corresponding model.
The original diagram explains only the three measurement directions C, L and D; it does not show the actual lock-body outline, scale or protection grade.

Sources

CISA English catalogue, PDF page 144 / printed page 140

Manufacturer documents are provided in their original language.

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