Master Lock 527D Keyed Brass Padlock 51mm Body
Solid brass padlock with adjustable hardened-steel shackle and vinyl cover for weather resistance
- Sold asCard
- Product typeKeyed
- Key features* Hardened 5/16 in removable adjustable steel shackle with p
- Weather-resistant solid brass body with vinyl cover
- Hardened steel shackle adjusts 6 cm to 15 cm for flexible fit
- 4-pin cylinder resists picking attempts
- Dual locking levers defend against prying and hammering
- Coloured key head simplifies identification on a busy keyring
Solid brass padlock with vinyl cover
The Master Lock 527D is a keyed padlock built around a 51mm solid brass body wrapped in black vinyl for scratch and corrosion resistance. It suits homeowners, tradespeople and facility managers who need a weather-resistant lock for gates, sheds or storage units where keys are preferred over combinations. The 4-pin cylinder and dual locking levers add pick and pry resistance for everyday security.
Adjustable hardened steel shackle limits
The vinyl-clad hardened steel shackle measures 5/16in diameter and adjusts from 2-3/8in to 5-15/16in vertical clearance, giving flexibility across various hasp thicknesses and chain links. This range defines the practical fit; openings narrower than the minimum or thicker than the maximum shackle diameter will not accept the lock. The vinyl coating reduces surface marring on painted or plated hardware during use.
Simple installation with common fit issues
Installation requires only threading the removable shackle through the hasp or chain and snapping it back into the body — no tools needed. The most common issue is selecting a mounting point where the adjusted shackle length cannot span the gap or where the 5/16in diameter is too large for the eyelet. The coloured key head helps identify the correct key quickly on a crowded ring.
How it compares
Measured against everything we stock in Keyed & Combination Padlocks, at today’s prices. Recalculated every night.
- Price $12.99
- Cheaper than about 62% of the 30 comparable items (median $14.99).
Specifications
| Product | |
|---|---|
| Brand name | Master Lock |
| Model name | 527D |
| Product type | Keyed |
| Size & build | |
| Shipping weight | 2.93 kg |
| Package size | 254 × 51 × 25 mm |
Questions about this item
Which shackle length should I choose for my application?
The hardened steel shackle adjusts continuously from 2-3/8 in to 5-15/16 in so one lock covers the full range without needing multiple sizes.
How does the 4-pin cylinder perform against picking attempts?
The 4-pin tumbler mechanism is designed to resist picking while the dual locking levers add pry and hammer resistance.
What does the 51 mm body width mean for fit and weather protection?
The 51 mm wide solid brass case with black vinyl cover resists scratches and corrosion while fitting standard hasp and chain openings.
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