Glens Key Lock & Safe Company
1147 South State Street, Salt Lake City, Utah 84111-4596 USA 

Phone 801.413.0577    Toll Free 800.451.9727    Fax 801-355-3414
Business Hours Mobile:
Monday - Friday
8:00 - 5:30
Business Hours Shop:    Monday - Friday 8:30 - 5:30
 Saturday 10:00 - 3:00

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High Security Keys
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Re-Key Padlock

Labor Saving

No drilling, no riveting, no grinding, no involved core work.
The most positive locking method known.

Top Security
Key cannot be removed when padlock is open. 
must be locked when key is removed.

Two Solid Balls
 Are forced into side of shackle when locked. 
They are held solid
by the plug and cannot be shocked loose.

Special processed steel, copper and nickel plated, or solid
brass for marine and other installations. Shackles can be
removed freely with key plug.

Operate your padlocks with the same key as your
home or business

Available for Kwikset, Schlage,
Weiser and Yale 8

5/16" Shackle Diameter


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  • Laminated steel body provides strength and protection against forced attacks.
  • Boron alloy steel shackle resists up to 15,000 lbs. of pressure from bolt cutter attacks.
  • Boron alloy steel shackle provides increased tensile strength and dual ball bearing locking design resists forcing of the shackle.
  • Xenoy® thermoplastic cover on padlock body protects it from dirt and adverse weather conditions.
  • Steel retainer screw and hardened steel cylinder retainer provide protection against dent puller attacks.
  • Drainage channels allow water to flow through the padlock rather than getting trapped inside and freezing during cold weather.
  • Utility patented key control, (for cylinders that incorporate the Biaxial® design), provides protection against the unauthorized duplication of keys.
  • A special elevating and rotating pin tumbler design, along with false slots on the bottom pins, mushroom top pins and a sidebar mechanism, work together, to provide superior pick resistance.
  • Angled cuts on the keys, along with fore and aft positioning, in the Biaxial design, provide added dimensions that dramatically increases key combinations and enables Medeco to produce some of the largest master key systems in the industry.
  • Hardened steel inserts, positioned in critical areas of the cylinder, provide a high degree of drill resistance.
  • UL437 listing provides assurance that cylinders meet universal standards for drill and pick resistance and resistance against other types of forced attack.
  • 54-X1 series padlocks have polyurethane material around the shackle to help prevent water and dirt from entering the shackle holes. In addition, a dust cover protects the keyway from water and dirt.
  • 54-X2 series padlocks have a shrouded shackle guard to provide additional resistance against bolt cutter attacks.




Shackle Diameters:
 5/16"                   3/8"                  9/16"
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This ASSA product line includes high-quality padlocks in three sizes, all of which can be incorporated into any ASSA key system.


High-quality case-hardened steel, chrome plated.

 SHACKLE: Rust resistant case-hardened steel. 
Tensile strength #6190/6191/65191 - more than 1-1/2 ton.
 #6391/65391-more than 3-1/2 ton. #6591/6559l- more than 10 ton.

 Two case-hardened steel balls.

 No external rivets or screws. Weep holes for positive water drainage and protection from ice buildup.

S&G  8077AD
Model 8077AD

5/16 " (8mm) diameter hardened steel shackle
7/8 " (22mm) clear shackle opening when locked
Overall dimensions: 4 3/32 " (10.4cm) high x 2 1/4 " (5.6cm) wide x 1 15/16 " (4.9cm) deep
Weight: 1.75 lbs. (.8 kilograms)

The 8077AD Combination Padlock is designed to meet stringent government specifications:
30 minute protection against expert manipulation
30 minute protection against radiographic attack
10 minute protection against surreptitious entry attacks

The 8077AD offers 125,000 possible combinations which can be field changed with the use of a change key

All padlocks are shipped from the factory set on 25. To open, turn the dial four times left to 25, right directly to 0, then pull sharply on the shackle.
This lock is built with very tight dialing tolerances, per the Federal specification. Dialing should be done slowly and as accurately as possible.

Each lock is individually packaged with a change key, operating instructions, and changing instructions.

Designed for indoor use on sensitive files, storage areas, and equipment.

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  • 13/32" Diameter hardened steel shackle
  • 3/4" Shackle clearance
  • Precision solid brass pin tumbler cylinder 
  • Laser welded stainless steel body.
  • Factory lifetime warantee
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  • Changeable combination
  • Shackle thickness 5/16"
  • Shackle clearances of 1 or 2-1/4"
  • Solid brass body
  • Factory lifetime guarantee
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