High Security Padlock 'MONOLITH' | Viro Padlocks

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Padlocks and accessories

One-Piece Body Special Steel Padlocks

The one-piece body special steel padlocks form part of the new generation of elegant padlocks, offering maximum resistance and security.
The one-piece body
, the dead-bolt and the anti-drill plate of the cylinder are treated with the "NIPLOY PROCESS", an innovative chemical nickel-plating process which ensures a high corrosion-proof standard.

  • Body: one-piece, special case-hardened, tempered steel.
  • Finish: "NIPLOY PROCESS" corrosion-proof nickel plating.
  • Dead-bolt: Ø 13 mm case-hardened, tempered steel rotating resistant to attack dead-bolt. Grip with programmed breakage dead-bolt head, to prevent the dead-bolt to be pulled-out.
  • Security cylinder: 7 pins, replaceable and re-keyable, protected by a rotating anti-drill plate in special case-hardened, tempered 4.4 mm thick steel.
  • Keys: supplied with 2 Viro Top Security profile nickel-plated brass keys.
    • Versions available with patented profile keys (form trademark) which can only be duplicated by Viro (.PB profile) or versions which can be duplicated only by Viro authorized centres (.PV profile).
  • Mechanism:
    • ball type locking;
    • key retaining;
    • first set of tempered inox stainless steel pins and counterprins;
    • brass pins;
    • mushroom brass counterpins, pick-resistant;
    • inox stainless steel (AISI 316) latch;
    • inox stainless steel springs pins;
    • inox stainless steel latch spring.
  • SPARE CYLINDER: item 4743 with accessory for cylinder replacement.
  • Packaging: single box visual pack.

Special visual packs.
All special executions are possible.


Item No.
A x B x E
Horizontal and
vertical clearance
F x C
Item No.
per pack
4143 78 x 62 x 30 28 x 12.5 13 039 850 1
4144 87 x 70 x 30 37 x 20.5 13 039 1015 1

For versions with patented profile keys the item code should be followed by: .PV or .PB.

SPARE CYLINDER with accessory for cylinder replacement
Item No.

For versions with patented profile keys the item code should be followed by: .PV or .PB.