3M DBI-SALA Nano-Lok Personal Self-Retracting Lifeline, 6 ft. Web, Aluminum Carabiner – 3100518
The 3M DBI-SALA Nano-Lok 3100518 is a compact, lightweight personal self-retracting lifeline designed for professional fall-arrest applications. This single-leg Class 1 SRL uses a 6-foot web lifeline and an aluminum carabiner configuration, providing a compact personal fall-protection system for construction, utilities, industrial maintenance, manufacturing, warehousing, and other work-at-height environments. 3M identifies 3100518 as the current replacement for legacy model 3101211.
The Nano-Lok incorporates a quick-activating, speed-sensing braking system designed to arrest a fall quickly while maintaining a short, automatically retracting lifeline during normal movement. Its compact design reduces the amount of equipment hanging from the worker compared with longer traditional lanyard systems.
The durable thermoplastic housing protects the internal components during demanding occupational use, while the swiveling anchorage connection helps the device follow worker movement and minimizes lifeline twisting.
An external energy absorber helps manage fall-arrest forces and incorporates an impact indicator to assist with post-fall inspection. The Nano-Lok family is designed for direct integration with compatible personal fall-arrest systems.
Manufacturer: 3M DBI-SALA
Product Series: Nano-Lok
Manufacturer Part Number: 3100518
ORS Nasco Item Number: 098-3100518
UPC: 006482502421930
Configuration: Single Leg
Lifeline: Web
Extended Length: 6 ft. / 1.8 m
Working Length: 4.6 ft. / 1.4 m
Anchor Connection: Aluminum Carabiner
Rated Capacity: Up to 420 lb. / 190 kg
SRL Classification: Class 1
Application: Personal fall arrest
Available for purchase individually.
Performance Ratings and Certifications
| Standard / Specification | Rating |
|---|---|
| ANSI/ASSP Z359.14-2021 | Class 1 |
| OSHA 29 CFR 1910.140 | Compliant |
| OSHA 29 CFR 1926.502 | Compliant |
| Lifeline Length | 6 ft. / 1.8 m |
| Working Length | 4.6 ft. / 1.4 m |
| Lifeline Material | Web |
| Maximum Capacity | 420 lb. / 190 kg |
| Configuration | Single Leg |
| Fall-Arrest System | Speed-Sensing Brake |
| Energy Absorber | External |
| Impact Indicator | Yes |
3M's current Nano-Lok user instructions specifically list model 3100518 as a 6-foot Class 1 device and identify the 6-foot extended length and 4.6-foot working length.



