Scope: Explains parameters using the ISEO Aditus and three-wheel combination-padlock catalogues as examples; letter symbols are not treated as universal rules for every brand.
Specifications
- Diameter example
- ØD: shackle diameter
- Opening example
- E: height; F: width
- Not interchangeable
- Lock body width is not opening width
First distinguish body, shackle and internal space
The Aditus catalogue uses A/B/C for body width, height and thickness, ØD for shackle diameter, and E/F for opening height and width. Reading only “40 mm padlock” can lead to confusing body width with shackle space; a complete record should retain what each dimension measures.
These letters come from this catalogue; other manufacturers may use different markings. For cross-brand comparison, first consult the manufacturer's dimension drawing, then compare the Chinese terminology rather than combining data solely because letters match.
Reading two example specifications
For example, P70040477 has a 40×37×14 mm body, 6.3 mm shackle diameter, 47 mm opening height and 22 mm opening width. These groups of values describe body envelope, bar cross-section and internal space respectively.
Three-wheel combination padlock P0153027B has a 28.5 mm body width, 5 mm shackle diameter, 22.4 mm opening height and 12.4 mm opening width. Its combination mechanism differs from a keyed padlock, but checking a hasp still requires separate consideration of diameter and opening.
What to check when pairing with a hasp
The hasp hole must accommodate the shackle cross-section; the shackle's internal space must accommodate the secured components and their relative positions. With layered hasps, chains or offset staples, comparing a single hole diameter is not enough to establish whether the lock can close.
A longer opening does not automatically mean greater security; dimensions assess geometric fit and do not replace material, construction or tested ratings. Check the manufacturer's drawing and complete hasp shape for the actual site.
Sources
- ISEO · Catalogue 01 .42, PDF page 210
Product fields, interfaces and dimension drawings on this page; no performance is inferred for other models.
- ISEO · Catalogue 01 .42, PDF page 216
Product fields, interfaces and dimension drawings on this page; no performance is inferred for other models.
Manufacturer documents are provided in their original language.