Which is better for outdoor use?

The Master Lock 6121. Its Weather Tough cover is made to keep out water, ice and dirt, and the boron alloy shackle is rated for harsh conditions. The ABUS 82/70 has a rust-resistant brass body but no cover or gasket.

Which has the stronger shackle?

The ABUS 82/70 at 12 mm versus 8 mm on the Master Lock 6121. Thicker shackle steel takes more to cut, though the Master Lock uses hardened boron alloy and a shielded dual ball mechanism.

Is the Master Lock 6121 worth the extra money?

Yes if the lock is outdoors or on a commercial door. The rekeyable 5-pin spool cylinder and weather cover are features the ABUS lacks. For a dry shed or shutter, the ABUS at $17.81 is enough.

Can I get both locks keyed alike?

Master Lock sells the 6121 in keyed-alike versions (6121KA) and offers factory keying. The ABUS 82/70 ships keyed with two keys and no keyed-alike option is listed.

Which is harder to pick?

The Master Lock 6121. Its 5-pin W6000 cylinder uses spool pins, which are designed to defeat picking. The ABUS 82/70 uses a standard keyed cylinder with no pick-resistance claims.

Which fits a standard shed hasp?

Both fit most hasps. The ABUS has a 22 mm horizontal and 13 mm vertical clearance; the Master Lock has a 22 mm shackle width and 29 mm shackle length, so it needs more vertical room.

ABUS 82/70 Stainless Steel Padlock vs Master Lock 6121 Stainless Steel Padlock

Buy the Master Lock 6121 if the lock lives outdoors or in a commercial setting. Its Weather Tough cover, boron alloy shackle and rekeyable 5-pin spool cylinder are built for that. Buy the ABUS 82/70 if you want a wide, solid brass shutter lock for a shed or gate on a budget. As of November 5, 2026, the ABUS is $17.81 at Whale Supply and the Master Lock is $24.99 at Amazon.

Today the ABUS 82/70 Stainless Steel Padlock costs $7.18 less at its best price.

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