hOpen Now

Pewag Viro "Euromonolith" 1/2" Security Chain Padlock - #4153

Pewag Viro "Euromonolith" 1/2" Security Chain Padlock - #4153
Image shown may be a stock photo and is for reference only.
Pewag Viro "Euromonolith" 1/2" Security Chain Padlock - #4153Pewag Viro "Euromonolith" 1/2" Security Chain Padlock - #4153Pewag Viro "Euromonolith" 1/2" Security Chain Padlock - #4153Pewag Viro "Euromonolith" 1/2" Security Chain Padlock - #4153
SKU: PW-4153MPN: 4153
Purchase over $500 of Pewag products and use Promo Code: PEWAG10 to receive a 10% discount off your order total! *Restrictions may apply
  • USUALLY SHIPS: 1 - 2 Days
  • Made in Italy

Product Description

What It Is
A solid, high-security padlock made to work with 1/2" (12 mm) square security chain. Its a solid piece of brass and hardened steel that leaves an impression of both quality and durability.

Why You Need It
Because a good security chain is only as good as the lock you secure it with. This lock's pins are completely shrouded and even protected by the security chain. Thieves look for the quick and easy target, but with this lock, there are no shortcuts! No bolt cutter access!

How Big Is It?
Well, it weighs 2.05 lbs (930 g) and is a handful for anyone with average hands. It's a great balance of feeling and looking really solid without being too big or bulky. You can easily slip this into your backpack, purse, etc. and tote it without weighing yourself down. We know you will be impressed!

How Secure Is It?
This is a true, high-security padlock that was hand selected to work with 12 mm square chain. Thieves hate these locks due to the high-quality materials used and their exclusive shape that makes them practically impossible to grip with traditional cutters or other common tools. The body is made from one-piece, special case-hardened and tempered steel. The finish is achieved via a special "NIPLOY PROCESS", which results in a corrosion-proof nickel plating. The dead-bolt is made from case-hardened, tempered steel. The security cylinder is built with 6 pins, replaceable, protected by a rotating anti-drill plate in special case-hardened, tempered 4.4 mm thick steel. Supplied with two Viro Top Security profile nickel-plated brass keys.


Chain Diameter
Overall Length
Overall Height
Pin Diameter
Weight (lbs)

Questions & Answers

3 Questions & 3 Answers
from Missouri asked:
April 23, 2018
Are the keys dimpled type or standard? Are the dimpled type much harder to defeat?
1 Answer
The keys are dimpled just as pictured, and industry experts seem to agree that dimpled keys make the lock much harder to pick.
Submitted by: WRS on April 23, 2018

from Austin, TX asked:
March 6, 2018
This lock is listed as being compatible with the 3/8" Pewag security chain. Is the shaft adequately protected from bolt-cutters when the smaller 3/8" chain is used?
1 Answer
That is somewhat a matter of opinion. There should be approximately 0.34" of space when used with 3/8" chain, which isn't a lot, but it's not ideal either. We recommend using the Viro lock designed for 3/8" chain, the #PW-4126 Panzer model. With the Panzer, each link sits in its own pocket, thus the bolt is completely protected.
Submitted by: Westech Rigging Supply on March 6, 2018

from Chico, CA asked:
February 14, 2018
Is it possible to purchase additional keys for this lock? If so, how much do they cost?
1 Answer
Yes, replacement key blanks are available here for $10.00/ea.
Submitted by: Westech Rigging Supply on February 14, 2018

Product Reviews

3 Reviews
100% (3)
0% (0)
0% (0)
0% (0)
0% (0)
0% Recommend this product (0 of 3 responses)
By Patrick Clark
October 21, 2018
Heavy duty lock, well protected.
Selected this over Viro Panzer to mate with the 10mm Pewag chain for a bicycle. Has an anti-drill plate the Panzer lacks and thus a smaller keyway exposure. It should be a good outdoor lock.
ProsAnti-drill plate, unusual key.
ConsPretty matte finish will pick up nicks over time. Not really a con, but reality for a workman's lock.
By Ron Kaminecki
Chicago, IL
September 26, 2018
Excellent Security
This lock comes as described with a hardened steel shell and brass innards. But check various lock picking sites to see that it also has a channel that is difficult to navigate with a pick plus seven (usually such locks have six) pins and all were spools (more resistant to picking than regular pins).
ProsImpressive looking security should make a crook look elsewhere; excellent security.
By Joe Tucciarone
La Palma, California
March 3, 2018
A true work of art.
This lock is beautiful to hold and look at. A true work of art. Bolt cutters can not even try to attack the shackle because the chain fills the space. I love the anti drill measures. Steel pins that can not be attacked because of the hardened keyhole plate that spins with the drill. YouTube videos show it is hard for locksmiths to pick. The whole body is one piece, thick, and case hardened.



Safety Notice

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Although Westech Rigging Supply strives to manufacture and sell the highest quality rigging and safety gear, use of the gear is dangerous if not used correctly by competent trained professionals. Westech Rigging Supply disclaims any liability resulting from the misuse of its rigging and safety gear. Please take a moment to more thoroughly review our disclaimer.

Westech Rigging Supply rigging and safety gear is only intended to be used by competent trained professionals. Misuse of the rigging and safety gear can result in serious injury up to and including loss of life. As such, Westech Rigging Supply disclaims liability for any misuse or incorrect product selection by our customers.

Rigging and safety gear purchased from Westech Rigging Supply should be used in strict accordance with all industry and OSHA standards. At no time should rigging or safety gear be used beyond its certified load ratings (aka Working Load Limits). Normal wear and tear should be expected with use of rigging and safety gear; therefore, all gear should be thoroughly inspected before each and every use. Worn or unsafe rigging and safety gear should never be used.