Name: CISA Astral 128553670 straight-shackle padlock | clearance 18×17.5 mm
Brand: CISA

CISA 128553670 — 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

128553670 diagram of clear width 18 mm, clear height 17.5 mm and shackle diameter 14 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	66 mm
Shackle clear width C	18 mm
Shackle diameter D	14 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: Astral
Construction: Straight-shackle padlock
Body width A: 66 mm
Shackle clear width C: 18 mm
Shackle diameter D: 14 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: 10
Key removal conditions: Removable only when locked

Clearance and hasp compatibility

This model has shackle clearance C=18 mm, L=17.5 mm, and shackle diameter D=14 mm; Body width A=66 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

Astral uses a reversible flat key and supplies a Code Card; Cylinder can be removed for rekeying or replacement. The information on the Code Card cannot be directly equated with controlled key-cutting procedures in other series.

Astral 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 147 / printed page 143

Manufacturer documents are provided in their original language.

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