Medeco 5471500 Indoor/Outdoor ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$269.00
$232.35
Medeco Medeco Indoor/Outdoor 6 Pin Padlock, 7/16" Shackle Diameter with Cylinder 5471500

Medeco 5471500 Indoor/Outdoor High Security 6-Pin Padlock with 7/16" Shackle Diameter and Cylinder

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Model: 5471500-00P
$269.00
$232.35

In Stock (leaves warehouse same day if ordered before 3pm ET)

$269.00
$232.35
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Medeco 5471500 Indoor/Outdoor High Security 6-Pin Padlock with 7/16" Shackle Diameter and Cylinder

The Medeco System Series Indoor/Outdoor Padlock delivers a high-security solution for demanding commercial applications where key control and physical attack resistance are paramount. Featuring a 7/16" shackle diameter and a 6-pin cylinder, this padlock is built with a boron alloy steel shackle that resists cutting attacks and provides increased tensile strength against pulling attacks — while maintaining exceptional ductility to prevent brittleness. Hardened stainless steel inserts inside the cylinder provide the ultimate defense against drilling and other forms of physical attack, and the weather-resistant body design ensures reliable performance in both indoor and outdoor environments.

Key Features

  • 7/16" Shackle Diameter: Available in either a 5/16" or 7/16" shackle diameter to suit a variety of security applications and hardware configurations.
  • Boron Alloy Steel Shackle: Provides exceptional resistance to cutting and pulling attacks while maintaining ductility and preventing brittleness for long-term reliability.
  • Hardened Stainless Steel Cylinder Inserts: Internal hardened stainless steel inserts deliver the ultimate defense against drilling, pulling, and other forms of vandal or physical attack.
  • 6-Pin High Security Cylinder: The 6-pin cylinder configuration with a unique elevating and rotating tumbler pin system is virtually pick-proof for superior security.
  • Patented M4 Key Control: Medeco 4 (M4) design provides utility patent protection against unauthorized key duplication; keys may only be duplicated by Medeco or an authorized Medeco service outlet, and only upon your request. The Shuttle Pin movable element in the key also provides protection against 3D printing.
  • Machined Brass Cylinder Components: All Medeco cylinders are constructed of durable machined brass components, designed to last the life of your equipment.
  • Flexible Keying Options: Padlocks can be ordered keyed alike, keyed differently, or master keyed to integrate with existing door hardware systems.
  • Key Retaining Options: Available as key retaining or non-key retaining; extended shackles available for Indoor/Outdoor padlock models.
  • Indoor/Outdoor Weather-Resistant Design: Black lockbody finish with a weather-resistant construction suitable for a wide range of indoor and outdoor environments.

Certifications & Compliance

  • Commercial-Grade Security Hardware
  • Patented Medeco 4 (M4) Key Control Technology — Unauthorized Key Duplication Prevention
  • Utility Patent Protection Against 3D-Printed Key Duplication

Technical Specifications

  • Series: Medeco System Series Padlock
  • Cylinder Technology: Medeco 4 (M4)
  • Pinning: 6-Pin
  • Shackle Diameter: 7/16"
  • Shackle Material: Boron alloy steel (cutting and pulling resistant)
  • Body Style: Indoor/Outdoor Weather-Resistant
  • Certification: UL 437 Listed
  • Construction: Durable machined brass cylinder components; hardened stainless-steel cylinder inserts
  • Warranty: 2-year manufacturer's warranty

Typical Applications

  • Commercial Office Buildings and Corporate Campuses
  • Industrial and Warehouse Facilities
  • Educational Institutions and School Campuses
  • Healthcare Facilities and Medical Campuses
  • Government and Municipal Buildings
  • Outdoor Equipment and Asset Security
  • High-Security Access Control and Key Management Programs

Why Medeco?

Medeco System Series padlocks are engineered for professionals who demand the highest levels of physical security and key control. With a boron alloy steel shackle rated for exceptional cutting and pulling resistance, hardened stainless steel cylinder inserts, and patented M4 key control technology that prevents unauthorized duplication — including protection against 3D-printed keys — these padlocks deliver uncompromising performance in the most demanding commercial and industrial environments. The durable machined brass cylinder construction is designed to last the life of your equipment, making Medeco a trusted choice for long-term security programs.

Manufacturer Resources

Medeco Product Catalog

Product Specs

Product Group:
Other / Miscellaneous Hardware
Product Subgroup:
Padlocks
Product Type:
Padlocks
Subcategory:
Padlocks
Commercial/Residential:
Commercial
Series:
System Series
Shackle Width:
7/8"
Cylinder and Keyways:
6Pin
Product Lockbody Color:
Black
Product Category:
Other / Miscellaneous Hardware
Product Substrate:
Stainless Steel
Department:
Door Hardware

Medeco 5471500-00P – Frequently Asked Questions

1) Will the Medeco 5471500 padlock fit a hasp with a 7/8 inch opening?
The 5471500 System Series padlock uses a 7/16 inch diameter shackle with a 7/8 inch shackle width, so the two shackle legs sit 7/8 inch apart. Your hasp staple or chain link has to clear a 7/16 inch thick shackle, and the hasp eye has to fall inside that 7/8 inch span. Shackle length is either 1-3/8 inch or 1-7/8 inch, so measure how deep the hasp and staple stack up before picking the length.
2) Can Medeco System Series padlocks be keyed into the same master key system as my building's door locks?
Yes. The System Series padlock takes a Medeco cylinder and can be ordered keyed alike, keyed different, or master keyed, so it folds into an existing Medeco key system rather than living as a one-off key on the ring. The cylinder is a 6-pin, and the keyway has to match what your doors already use: Biaxial G3, Bilevel DL, Keymark 8E, M3 DL, or Original 00. Order the keyway your system runs on, or the key you carry won't turn it.
3) What is the difference between key retaining and non-key retaining on a Medeco padlock, and which should I order?
Key retaining means the key will not come out of the cylinder while the shackle is open, so the lock cannot be left hanging unlocked with the key in someone's pocket. That is what you want on lockout/tagout, gates, and anywhere a lock walking off open is the failure you are guarding against. Non-key retaining lets the key come out either way, which technicians carrying one key across many padlocks usually prefer. The 5471500 is offered both ways and it is a build option, not a field change, so decide at order time.
4) Can this Medeco padlock be left outside on a gate or a yard fence year round?
Yes, it's built for it. The 5471500 is the indoor/outdoor body style with weather resistant construction and a black lockbody, so it does not need a shroud or a cover to sit on an exterior gate, a job trailer, or outdoor equipment. Shackle material is your call between boron alloy steel, which resists cutting and pulling, and stainless steel, which is the choice where salt air or washdown chemicals are the bigger problem than a bolt cutter.
5) Is the Medeco 5471500 padlock UL 437 listed?
Yes, the System Series indoor/outdoor padlock is UL 437 Listed. Along with that it carries hardened stainless steel inserts in the cylinder against drilling and the patented M4 key control that blocks unauthorized key duplication, including 3D printed copies. If your spec calls out a high security cylinder for a government, healthcare, or campus facility, that listing is the line the spec is usually written against.
6) I run Sargent removable core on my doors. Can I use a Medeco padlock in that system?
No. The 5471500 takes a Medeco cylinder in a Medeco keyway (Biaxial G3, Bilevel DL, Keymark 8E, M3 DL, or Original 00), so it will not accept a Sargent core and won't operate on your Sargent keys. If you want the padlocks on the same system as Sargent doors, look at the Sargent 60-858-2 removable core padlock with a 2 inch stainless steel shackle, which is built to take a core out of that system.
7) What is the closest high security padlock to the Medeco 5471500 if I need a removable core instead?
The Sargent 60-858-2 is a removable core padlock with a 2 inch stainless steel shackle, so the cylinder can be pulled and rekeyed in place as part of a small format interchangeable core program. The Medeco 5471500 System Series padlock uses a fixed 6-pin cylinder and is ordered in the keyway and technology you specify - Biaxial G3, Bilevel DL, Keymark 8E, M3 DL, or Original 00 - and can be pinned or supplied sub-assembled for a locksmith to pin on site. Choose the 60-858-2 when the facility already runs interchangeable cores, and the 5471500 when key control and the Medeco keyway system are the deciding factor.
8) Which padlock should I use for lockout tagout instead of a Medeco high security padlock?
Lockout tagout calls for a nonconductive or lightweight safety padlock, not a high security key control lock. The ABUS 72/30 is an anodized aluminum safety padlock with a 1-1/4 inch body width and a 3/16 inch shackle diameter, and the ABUS 74/40 is an insulated safety padlock with a 6-pin cylinder, a 1/4 inch shackle diameter, and a 1-1/2 inch body width. The Medeco 5471500 System Series padlock is a commercial padlock built around a 6-pin high security cylinder with a boron alloy steel or stainless steel shackle, aimed at securing assets rather than tagging out energized equipment.
9) What other padlock offers patented key control if I am standardizing a campus and not using Medeco?
The Sargent 82-856 is a KESO Series non-key retaining padlock with a 2 inch by 2 inch brass case and a stainless steel shackle, giving a restricted key system under the Sargent program. The Medeco 5471500 System Series padlock delivers key control through the Medeco 4 cylinder platform, with keys duplicated only by Medeco or an authorized Medeco service outlet on request. Standardize on whichever platform the rest of the campus cylinders already sit in, since the two key systems do not cross.
10) What does "pinned" vs "sub-assembled" mean when ordering a Medeco padlock?
Pinned means the cylinder arrives built to a keying code, ready to hang on the gate. Sub-assembled means it ships without the pinning set so your locksmith or in-house security shop pins it to your own system, on your own key records. Buy pinned if you have no one to pin it; buy sub-assembled if you run your own Medeco key system and want the bitting kept in-house. Both are order options on the System Series padlock.
11) Do I need a high security padlock like the Medeco, or will a standard brass padlock do?
It comes down to whether key control matters. If your real risk is someone copying a key at a hardware store, the Medeco is the answer: M4 key control means keys are cut only by Medeco or an authorized service outlet, at your request. If you just need a solid commercial padlock on an interior cabinet or a fence where duplication isn't the threat, a Sargent 758 key retaining padlock or the Schlage KS23D/KS23F brass padlock with a 5/16 inch shackle covers it for less lock. For lockout/tagout, neither fits, use a safety padlock like the ABUS 72/30 anodized aluminum.
12) My chain won't clear a short padlock shackle. Does Medeco make a longer shackle for the System Series?
Two shackle lengths are offered on the indoor/outdoor padlock, 1-3/8 inch and 1-7/8 inch clearance. The 1-7/8 is the one for chain through a gate post, thicker hasp stacks, or where you have to reach around a bracket. Note the shackle is 7/16 inch thick either way, so the chain link itself has to accept that diameter before length matters at all.
13) How many of these can I key alike across a portfolio of properties?
Keyed alike is a standard order option, so a property manager can put one key on every storage room, roof hatch, and gate padlock across a portfolio, and master key above it so a supervisor carries one key for all of them. The catch worth knowing up front: because M4 keys can only be cut by Medeco or an authorized outlet at your request, adding padlocks to that group later means going back through the same channel. Order the spares with the first batch.
14) Boron alloy steel or stainless steel shackle on a Medeco padlock, which one for a coastal site?
Stainless for coastal and washdown. Boron alloy steel is the attack resistant choice, it resists cutting and adds tensile strength against pulling while staying ductile so it doesn't shatter, and that's what you want on a yard gate or a trailer. Where salt spray or chemicals will be on the lock daily, stainless holds up better in the weather. Both are offered on the System Series indoor/outdoor body.
15) What is the difference between a Sargent 758 and a Sargent 858 padlock when comparing against Medeco?
The Sargent 758 is a key retaining padlock finished US4 satin brass, and the Sargent 858 is the non-key retaining version with a stainless steel shackle in the same US4 satin brass finish. Key retaining means the key cannot be removed while the shackle is open. The Medeco 5471500 System Series padlock covers both behaviors within one model - it is ordered key retaining or non-key retaining - and carries a black lockbody rather than a brass finish.
16) Do I need the Medeco 5471500 for a standard storage cage, or will a simpler padlock work?
A storage cage that only needs a keyed lock, not a restricted key program, is served by a standard commercial padlock such as the Sargent 758 in US4 satin brass or the Sargent 858 non-key retaining version with a stainless steel shackle. The Medeco 5471500 System Series padlock adds a 6-pin Medeco cylinder with hardened stainless steel inserts against drilling and a boron alloy steel shackle, and can be ordered keyed alike, keyed different, or master keyed into an existing Medeco system - which is the reason to step up to it rather than the cage itself.
17) Is the Medeco System Series padlock a commercial-grade lock or a consumer one?
Commercial. It's specified for office buildings, industrial and warehouse sites, schools, healthcare campuses, and government buildings, with a 6-pin high security cylinder built on machined brass components and hardened stainless steel inserts against drilling. The tumbler pins elevate and rotate, which is what makes it resist picking. This is a lock bought into a managed key program, not an off-the-shelf gate lock.
How fast can I get the Medeco 5471500-00P delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Medeco 5471500-00P come with a warranty?
Absolutely. The Medeco 5471500-00P is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Medeco 5471500-00P?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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