Firmament Bolt Company
SmartBolt is a self-powered fastener, designed to restore its own preload using energy harvested from vibration.
Bolted joints in vibrating equipment lose clamp force over time. SmartBolt is being developed by Firmament Bolt Company (FBC) to address that loss at the fastener itself.
- In prototype development
- Patent applications pending, PCT filed
- Prototype tensioner in manufacture, arriving est. 27 Nov 2026
The problem
Fasteners lose clamp force over time under vibration.
A bolted joint holds together because the bolt is stretched to a set tension, called preload. Under sustained vibration, cyclic loads and temperature swings, that preload tends to fall. Threads can work loose, contact surfaces settle, and the joint ends up holding less firmly than it was designed to.
Operators manage this with inspection rounds, scheduled re-tightening and locking hardware. Each of these adds labour and planned downtime, and a joint that loosens between inspections can go unseen until it causes a fault.
The approach
Using vibration to counter its own effect
SmartBolt is designed to turn the vibration that loosens a joint into the energy that restores it.
Harvest
SmartBolt is designed to collect energy from the vibration already present in the equipment it fastens.
Store
Harvested energy is intended to be held within the fastener until it is needed.
Restore
The restoration mechanism is designed to use that stored energy to bring preload back up as it falls.
The company
Firmament, an American company
SmartBolt is developed by Firmament Bolt Company, a C-Corporation incorporated in the State of Delaware. You work with a US company.
- Legal name
- Firmament Bolt Company
- Entity
- Delaware C-Corporation
- Incorporated
- September 29, 2026
- Registered office
- Lewes, Sussex County, Delaware
Check our Delaware C-Corp Certificate (PDF)
The incorporator's mailing address is redacted for privacy. Text version: web page, plain text.
Public record
Search us on Delaware State's corporation listing
Don't take our word for it. Firmament Bolt Company is on the State of Delaware's official register of corporations.
Open the Delaware entity search
The Division of Corporations runs a free public lookup.
Search “Firmament Bolt Company”
Or search by file number 10789582.
Open the result
You will see the Entity Details page shown here.
File number 10789582. The red "not a statement of good standing" line appears on every free lookup; it is standard wording, not a flag on our company.
Working with bolted joints under vibration?
SmartBolt is in prototype development. Performance data is shared with qualified partners under NDA.