Fort Knox Spartan 6637 Gun Safe

9.4

Lock

10.0/10

Security

10.0/10

Price

8.0/10

Features

9.0/10

Quality

10.0/10

Pros

  • Multiple UL Approved High Quality Lock Options from S&G
  • UL RSC Burglary Rating - 3/8" Steel Door & 3/16" Steel Body
  • 50 Minute Inferno Shield Fire Protection
  • High Quality Interior with Full Customization
  • Comprehensive Lifetime Warranty that covers the entire safe against theft, fire, natural flood, locks, parts, and paint with free freight shipping on replacement safes

Cons

  • Long Lead Times to Build
Special Offers

Fort Knox Gun Safes are renowned for their exceptional security and durability, with everything made right here in the USA. These gun safes are distinguished by their lifetime warranty, a testament to their superior quality and the company’s confidence in their products. In addition, they offer advanced Inferno Shield fire protection, the thickest steel in the industry and high quality UL rated locks. What’s more, the standard features in Fort Knox safes are often the premium features in other brands, meaning that with Fort Knox, your gun safe starts where most other gun safes end. The Spartan series is the beginning of their series and in this Fort Knox Spartan 6637 Gun Safe Review, I’m going to help you understand exactly what sets Fort Knox gun safes apart.

Lock – Fort Knox Spartan 6637 Gun Safe

UL Approved Type 2 Mechanical Lock – S&G

First and always most important for any safe is its lock and the Fort Knox Spartan 6637 Gun Safe comes standard with the S&G Mechanical Lock, UL approved Type 2. This is the highest quality mechanical lock in the industry that is designed to last forever. It uses the traditional 3 number combination on a spy-proof dial that prevents others from seeing you spin the combination.

Fort Knox S&G Mechanical Lock

UL Approved Type 1 Electronic Lock – S&G

There is also a second lock option that is the S&G electronic lock. This is an excellent quality lock made by the oldest lock company in the United States. UL Approved type 1 is the highest security rating available and I highly recommend this lock.

This lock features a 6 digit electronic code that is easy to program to your own custom combination. In addition, the lock opens 10,000+ times on just one battery. Finally, there are over 1 million possible combinations.

If all that is not enough, S&G’s high-security electronic locks are proven to withstand military-level EMP attacks. S&G tested this lock using the U.S. military’s highest EMP impact standard. An independent lab applied a radiant transient electromagnetic field on this keypad following the Military Standard MIL-STD461F, Method RS105 at 50 kV/m peak exposure. At the end of the testing series the S&G locks were still fully functional.

S&G 6120 Electronic Lock

Hard Plate and Re-Locker

Protecting either lock option is both a hard plate and internal re-locker. The Hard plate is a piece of hardened steel that absolutely destroys drill bits. The internal re-locker fires if the lock is punched through securing the bolts in place. Fort Knox uses a ball bearing hard plate which is better than the traditional hardened steel because it causes the drill bit to slip off of the round balls. Both of these are essential security features and included on this safe.

Ball Bearing Hard Plate

Security – Fort Knox Spartan 6637 Gun Safe

When it comes to security the Fort Knox Spartan 6637 gun safe begins where most gun safes end. It features a 3/8″ steel door in addition to a 3/16″ steel body. That is a significant amount of steel for their “entry level” safe. Most entry level safes are 14 gauge steel for reference. Securing the door are 1-1/2″ solid steel locking bolts that extend deep into the safes body.

Steel Gauge Comparison

All of this security earned the Spartan series the UL RSC burglary rating. These requirements ensure the safe can withstand an attack on the door with multiple different tools for a minimum of 5 minutes each. If the standard security on this safe is not enough for you, you can also add up to four additional 10 gauge steel liners.

Fire Rating – Fort Knox Spartan 6637 Gun Safe

Another advanced feature of Fort Knox Gun Safes is the Inferno Shield fire protection. Fort Knox limits the thermal conductivity by lining the inside of their vaults with a proprietary blend of a hydrogen bond fireboard and lock it in place using a stud weld process. They also test this process with a full 9 sensor house simulated test and show you the exact details in the graph below. Others just can’t match up.

Fort Knox Inferno Shield Fire Protection

The Spartan series specifically, is fire rated for 50 minutes at 1450 degrees. The temperature used in the test is significantly hotter than competitors who only test their safes at 1200 degrees. So if it was an apples to apples comparison, the Fort Knox Spartan gun safes would likely last 90 minutes or more.

Fort Knox Spartan 50 Minute Fire Label

Style and Function

The Fort Knox Spartan Gun Safes are available in a variety of textured and gloss color options. Hardware includes a 5-spoke handle and matching keypad available in black chrome, silver and gold. The interior carpeting is available in silver or beige and you can customize the interior to your specification for the amount of guns you want to store or switch it to an all shelf interior. Fort Knox offers the most customization out of any gun safe company as every single safe is custom built to order.

The only accessory included is an internal power outlet that you can use to run a dehumidifier and lights. However, Fort Knox does offer a convenient bundle that includes a door organizer, lights, hinge caps and a dehumidifier.

Fort Knox Spartan 6637 Gun Safe Interior

Warranty

Fort Knox Inc. will replace any home, luxury or gun safe, free of charge, broken into by forced entry or damaged due to an unlawful attempt during the lifetime of the original purchaser.

Fort Knox Inc. warrants to the original purchaser only, that each new vault will be free from defects in material and workmanship for the lifetime of the original purchaser from the date of delivery. Integral units such as locks are subject to this same warranty.

This is a lifetime warranty on all components of the safe and the absolute best warranty in the industry. Fort Knox safes may cost more, but they are guaranteed for life. This is an absolute testament to the superior quality of the product.

Fort Knox Lifetime Warranty

The Bottom Line

Would I buy the Fort Knox Spartan 6031 Gun Safe for my firearms and valuables. Yes, I absolutely would. Fort Knox uses superior quality locks, steel, fire protection and accessories while backing it with a comprehensive lifetime warranty covering all components of the safe.

Yes this gun safe is quite expensive, but in the safe world, you get what you pay for. All these other companies that sell safes cheaper have one layer of steel, no independently verified fire rating and only provide you with a strong door at most. Get thick steel on all six sides, verified fire protection and made in USA quality with Fort Knox.

Check Best Price Dean Safe

One of the only cons of this product is that it typically takes at least 8-10 weeks to build. That’s why I’ve partnered with Dean Safe company. They have the largest supply of in-stock Fort Knox Gun Safes in the industry. All of their product pages will tell you which models are available as In-Stock and able to ship same business day. You can see all of the available In-Stock Fort Knox Gun Safes Here.

Fort Knox Color Options