ABLOY High Security Padlocks ABLOY Padlocks operate reliably in the most severe environments such as coastal locations and freezing conditions as they do not contain parts such as springs or pins that can jam. ABLOY® padlocks have been designed and manufactured to not only meet the requirements of the EN12320 padlock standard, but exceed as the requirements of our own tests are significantly higher. The ABLOY Padlock range is used extensively by defence forces, heavy industrial operators, and high security government departments worldwide. Padlocks Comparison Table Padlock Security Grades Padlock Accessories ABLOY PLM350 SWP Steel PadlockSecurity Grade 5. Weather Proof. ABLOY PLM340 SWP Steel PadlockSecurity Grade 4. Weather Proof. ABLOY PLM330 SWP Steel PadlockSecurity Grade 3. Weather Proof. ABLOY PL362 Steel Padlock with Raised ShouldersSecurity Grade 6. ABLOY PL350 Steel PadlockSecurity Grade 5. ABLOY PL342 Steel Padlock with Raised ShouldersSecurity Grade 4. ABLOY PL341 Brass PadlockSecurity Grade 3. ABLOY PL340 Steel PadlockSecurity Grade 4. ABLOY PL330 Brass PadlockSecurity Grade 3. ABLOY PL321 Brass PadlockSecurity Grade not tested.