Master Lock A3561 Brass padlock reference

Specifications

Body width

1-3/4 in (44 mm)

Shackle length

2 in (51 mm)

Inside shackle width

3/4 in (19 mm)

Shackle diameter

5/16 in (8 mm)

Colour

Gold colour

Body material

Solid brass

Model and scope of documentation

This record covers official model A3561; the source is the manufacturer's US product page. Model suffixes form part of the product identity and must be retained when checking procurement or replacement documents.

The original page identifies the brand as Master Lock. This site's Chinese source organised the readable specifications into labelled fields; dimensions retain the manufacturer's original units and conversions without changing the measurement reference.

How to use these dimensions

The official technical fields for this model include: Body width 1-3/4 in (44 mm); Shackle length 2 in (51 mm); Inside shackle width 3/4 in (19 mm); Shackle diameter 5/16 in (8 mm). These values identify this model and do not represent other products from the same brand.

Body width describes the external body size; inside shackle width and length define mating clearance, while shackle diameter determines hole fit. These measurements serve different purposes, so body width alone is insufficient for choosing a replacement. Check the illustrated reference points and opening clearance for the actual installation.

Selection checklist

The following are documentation recommendations, not a manufacturer's compatibility guarantee. Matching specifications do not establish interchangeability in every application.

• Check that the complete model A3561 matches the physical product or quotation.
• Check shackle diameter against the mating hole and inside shackle width against the fitting width separately; also allow room for rotation and opening.
• Separately confirm the supplied configuration, keying, operating environment and applicable local requirements.
• For performance or certification conclusions, inspect evidence for the specific model rather than inferring from appearance or dimensions.

Differences from similarly sized models

A3561 has the following explicitly stated in its official documentation: Body material: Solid brass. When comparing similarly sized models in this group, check these construction and operating details as well; matching body and shackle dimensions do not replace confirmation of materials and mechanisms.

Limitations

• This is model information from the official US catalogue, not a statement of local availability, stock or pricing in Central Asia.
• Dimensions retain the original units; no physical testing or independent compatibility verification has been obtained.
• Image links come from the official source page; image-use permission has not been verified. Confirm performance, warranty and certification on the original page.

Sources

Manufacturer documents are provided in their original language.

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