Name: CISA Locking Line brass 121010500 U-shackle padlock | clearance 27.9×28.7 mm
Brand: CISA

CISA 121010500 — 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

121010500 diagram of clear width 27.9 mm, clear height 28.7 mm and shackle diameter 7.9 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	50 mm
Shackle clear width C	27.9 mm
Shackle diameter D	7.9 mm
Shackle clear height L	28.7 mm
Body thickness S	17 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: Locking Line Brass
Construction: U-shackle padlock
Body width A: 50 mm
Shackle clear width C: 27.9 mm
Shackle diameter D: 7.9 mm
Shackle clear height L: 28.7 mm
Body thickness S: 17 mm
Lock body material: Solid brass, belt-polished
Shackle material: Carbonitrided steel, nickel-plated
Catalogue pin count: 5
Shackle locking on both sides: Listed in the catalogue

Clearance and hasp compatibility

This model has shackle clearance C=27.9 mm, L=28.7 mm, and shackle diameter D=7.9 mm; Body width A=50 mm, thickness S=17 mm.

C is the clear width between the inner sides of the shackle, and L is the clear height beneath it; D describes the shackle bar diameter. Hasp hole diameter and spacing are different constraints; sufficient clear height alone does not establish that the shackle can pass through.

Keys, materials and construction scope

This series has standard and long shackles; check shackle clear height against the specific order row. Identical body width does not guarantee identical shackle clear height.

The catalogue also lists shrink-wrapped card packaging number 121090500, with dimensions matching this entry. Distinguish packaging from the number of items supplied when purchasing; packaging itself does not change the listed shackle space.

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 155 / printed page 151

Manufacturer documents are provided in their original language.

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