CSQ275 Dual Connector Carabiner for Twin SRLs, 4-Pack
The Frontline CSQ275 is a dual connector that solves a common twin-leg problem: it joins both connectors of a twin-leg SRL or lanyard to a single harness dorsal D-ring, so the two legs share one secure, correctly-loaded attachment instead of crowding or cross-loading the ring.
Built from self-locking steel and rated to 5,000 lbs, it gives twin-leg users the manufacturer-intended harness connection. Built to ANSI Z359.12 for connecting components, aligning with OSHA 1926 and 1910 - the right link between a twin-leg device and the back D-ring.

Who Needs This Product
This product is a connecting component - the rated link between elements of a personal fall arrest or restraint system. Workers use it to join lanyards, SRLs, anchors, and harness D-rings. It must be self-locking and size-and-shape compatible with what it connects to, and used only as part of a complete system with a full body harness.
Features
Stops back-D-ring crowding
Joins both legs of a twin device into one attachment instead of forcing two connectors onto one ring.
Loads the ring the right way
Keeps the legs from cross-loading or side-loading the dorsal D-ring.
The manufacturer-intended connection
Gives twin-leg SRLs and lanyards the back-D-ring hookup they are designed for.
Self-locking, no rollout
A deliberate action to open, so it will not disengage in use.
One per worker
Outfit a four-person crew or four twin-leg devices from the 4-pack.
Works with any twin-leg device
Pairs with twin-leg SRLs and lanyards that use compatible connectors.
Technical Specifications
| SKU | CSQ275 |
|---|---|
| Type | Dual connector carabiner for twin-leg SRLs/lanyards |
| Function | Joins two leg connectors to one harness dorsal D-ring |
| Locking | Self-locking |
| Material | Steel |
| Rated strength | 5,000 lbs |
| Standards | ANSI Z359.12; OSHA 1926; OSHA 1910 |
Self-locking and compatible, always. Use this connector only where its size and shape cannot roll out or load the gate against what it connects to. Never connect two snap hooks together, never load the gate, and confirm the keylock or quarter-turn lock is fully engaged before trusting the connection.
Compliance Standards
ANSI Z359.12
American National Standard for connecting components for personal fall arrest systems.
OSHA 29 CFR 1926.502
Federal construction fall protection criteria, including connector requirements.
OSHA 29 CFR 1910.140
General industry personal fall protection system requirements.
Typical Applications
How to Use the CSQ275
Follow the manufacturer's manual. The sequence below is an overview only.
- Inspect. Check the body, gate, and locking mechanism before each use.
- Check compatibility. Confirm the connector size and shape suit what it connects to - no roll-out risk.
- Connect. Open the gate, make the connection, and let the gate close.
- Lock it. Engage and confirm the keylock or quarter-turn lock is fully seated.
- Load correctly. Ensure the load runs along the spine, never against the gate.
Inspection and Retirement
Inspect before each use, with a documented competent-person inspection at least every 6 months. Pull the equipment from service for any of the conditions below.
- Visual: deformation, cracks, corrosion, or damaged welds on load-bearing parts.
- Moving/locking parts: gates, jaws, pins, and locks operate and lock positively.
- Connection points: D-rings, eyes, and hooks free of wear, elongation, or sharp edges.
- Fasteners: present, correct, and fully engaged per the manual.
- Markings: labels must be present and legible.
Retire the equipment immediately after any fall arrest event or if any inspection point fails. Destroy retired equipment so it cannot return to service.
Frequently Asked Questions
Frontline CSQ275 Submittals and Documentation
Frontline Hooks and Carabiners User Manual (PDF)Use, compatibility, inspection, and retirement. Frontline Catalog (PDF)The full Frontline Fall Protection product catalog.Compatible and Related Products
- Frontline RPG082SLE Twin Leg SRL. A twin-leg SRL that uses a dual connection.
- Frontline LIS62R Twin Leg Lanyard. A twin-leg lanyard for the dorsal D-ring.
- Frontline 100CTB Combat Construction Harness. A harness to build the connection onto.
Building Out Fall Protection Connections?
The right connector depends on what it joins. Confirm your system and connection points with us and we will walk through the lineup so the right connectors ship together.
Call 863-703-4522 to talk to a fall protection specialist.
