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Sargent & Greenleaf 2937 Complete Group 1 Mechanical Safe Lock, Federal Specification FF-L-2937, Spy-Proof Dial, Dial Ring and Dust Cover
Designed to meet federal specification FF-L-2937 for securing field safes, armory vault doors, weapons containers, and other GSA-approved containers, S&G’s high-security mechanical combination lock offers rugged construction, simple combination changing, built-in thermal protection, and a Spy-Proof dial. Our model 2937 high-security combination lock is easy to install or retrofit onto existing containers. The lock matches the footprint and mounting dimensions of most mechanical and electronic safe locks.
Features
- Three all-metal wheels
- 1 million theoretical combinations
- Dial spindle with carbide barrier pins and shear line to control point of separation
- Stainless steel bolt resists 600 lbs. of side and end bolt pressure
- Built-in thermal protection
- Unique torque adjuster to set and maintain wheel pack torque
- Key-changeable wheel design
- Drilled and tapped holes in the bolt
- Left-right-left dialing with push to open
- Internal relock trigger
Specifications:
- Installation:
- Standard S&G magic module footprint
- Universally handed: left hand, right hand, vertical up, or vertical down mounting
- Operation:
- Familiar left-right-left dialing, turn to zero, press in and release, then turn dial to open
- Over 1,000,000 potential unique combinations
- Key-changeable wheel design
- Spy-Proof dial
- Three all-metal wheels
- Patented torque adjuster
- Resistance to expert manipulation tested and verified to exceed 20 hours
- Bolt is drilled and tapped for use in most government container applications
Manufacturer Resources
Product Specs
- Catergory:
- Mechanical Locks
- Product Group:
- Security Locks
- Product Subgroup:
- Padlocks & Parts
- Series:
- 2937
- Subcategory:
- Safe Lock
- Product Type:
- Cam & Drawer Locks
- Product Height:
- 2.4"
- Product Width:
- 3.4"
- Department:
- Safety
- Product Depth:
- 1.1"
Sargent & Greenleaf 2937-200 – Frequently Asked Questions
1) Does the 2937 safe lock have to be mounted in a particular orientation or handing?
No handing to specify. The 2937 is universally handed and mounts left hand, right hand, vertical up, or vertical down, so one part number covers whatever orientation the container door needs.
2) Is the Sargent & Greenleaf 2937 approved for GSA containers and armory vault doors?
It is built to federal specification FF-L-2937, for field safes, armory vault doors, weapons containers, and other GSA-approved containers. It is a Group 1 mechanical combination lock. If your procurement spec calls out FF-L-2937 by name, this is the lock that answers it.
3) What comes in the box with the 2937 complete lock, and do I need to order the dial separately?
The complete group ships as a set: lock body, Spy-Proof dial, dial ring, and dust cover. Nothing else has to be ordered to put a working combination lock on the container. The single orderable configuration is the Complete Lock, MPN YBLED60/PCT.
4) How much force will the bolt on the 2937 take, and can I attach my own bolt work to it?
The bolt is stainless steel and resists 600 lbs of side and end bolt pressure. It is drilled and tapped, which is how it gets tied into the boltwork on most government container applications, so you can fasten linkage directly to it rather than fabricating an adapter.
5) How do you dial open a Sargent & Greenleaf 2937, and can the combination be changed on site?
Dialing is the familiar left-right-left sequence: turn to zero, press the dial in and release, then turn to open. The three all-metal wheels use a key-changeable design, so a technician resets the combination with a change key rather than sending the lock out. There are over 1,000,000 possible combinations.
6) Mechanical safe lock or electronic, which should I put on a weapons container?
A mechanical dial lock like the 2937 has no battery and no electronics to fail, which is why it stays the choice for field safes and weapons containers that sit unattended or go out on deployment. It has built-in thermal protection and an internal relock trigger, so a torch attack or a punch attack on the lock body throws the relocker and the container stays shut. The tradeoff is speed and audit: you dial a combination rather than key a code, and there is no electronic audit trail. If the spec on your job says FF-L-2937, that spec is calling for a mechanical lock and this is it.
7) How well does the 2937 hold up to manipulation and drilling attacks?
Resistance to expert manipulation was tested and verified to exceed 20 hours. The dial spindle carries carbide barrier pins to defeat drilling, plus a shear line that controls where the spindle separates under a punch attack, and a patented torque adjuster sets and maintains wheel pack torque so the wheels do not give up feedback to a manipulator.
8) How much depth do I need behind the safe door for the 2937 lock body?
The lock case is 1.1 inches deep, 3.4 inches wide and 2.4 inches high. On a retrofit, that depth is what has to clear the boltwork and any liner behind the door skin. Measure the cavity your existing lock sits in before ordering.
9) What does the Spy-Proof dial on the 2937 actually do for a secure facility?
The Spy-Proof dial shields the index from view, so someone standing nearby or a camera in the room cannot read the numbers off as the combination is dialed. In a shared armory or a vault room with overhead surveillance, that is the difference between a combination that stays secret and one that has to be changed every time someone walks past.
How fast can I get the Sargent & Greenleaf 2937-200 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 Sargent & Greenleaf 2937-200 come with a warranty?
Absolutely. The Sargent & Greenleaf 2937-200 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 Sargent & Greenleaf 2937-200?
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
Why buy the Sargent & Greenleaf 2937-200 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.