3100523 Nano-Lok Personal Self-Retracting Lifeline, Web Aluminum Carabiner, 6 ft., Class 1, ANSI – 3M DBI-SALA

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  • Swiveling anchorage loop with carabiner
  • Quick activating speed sensing brake system
  • Self-locking snap hook on lifeline
  • Compact & lightweight design
  • Durable thermoplastic housing
  • High capacity external energy absorber and impact indicator
  • RFID equipped and capatible with inventory management system
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ANSI Class Level

Class 1

Average Arrest Force (Imperial)

1125 lbf (ANSI), 1125 lbf (OSHA 130 lb – 310 lb)

Average Arrest Force (Metric)

5 kN (ANSI), 5 kN (OSHA 130 lb – 310 lb)



Connected Safety ID Equipped


Harness Connection Hook Material

Zinc Plated Steel

Harness Connection Type

Single Pin Connector

Housing Material

Nylon Thermoplastic

Housing Type


Install Type

Portable & Removable

Leg Count


Lifeline Connection Type


Lifeline Hook Material


Lifeline Length (Imperial)

6 ft

Lifeline Length (Metric)

1.8 m

Lifeline Material


Maximum Arrest Force (Imperial)

1800 lbf (ANSI), 1800 lbf (OSHA 130 lb – 310 lb)

Maximum Arrest Force (Metric)

8 kN (ANSI), 8 kN (OSHA 130 lb – 310 lb)

Maximum Number of Users


Mounting Type

Direct to Harness Back

Overall Length (Imperial)

6 ft

Overall Length (Metric)

1.83 m

Product Color


Product Series


Product Type

Quick Connect Self-retracting Lifeline (Web)

Recommended Industry

Mining, Oil & Gas, Industrial, Utility, Renewable, Wind Energy, Transportation, Utilities, Automotive, Warehousing, Pharmaceutical, General Industrial, Metal Fabrication, Manufacturing, Construction, General Manufacturing, Maintenance, Military Maintenance, Repair & Operation (MRO), General Industry, Metal Production & Fabrication

Specifications Met

29 CFR OSHA 1910.140, 29 CFR OSHA 1926.502, ANSI/ASSP Z359.14-2021

Weight (Imperial)

2.161 lb.

Weight (Metric)

0.98 kg

Weight Capacity (Imperial)

420 lb.

Weight Capacity (Metric)

190 kg

Self-retracting lifelines (SRL's)

An SRL is an alternative to traditional shock absorbing lanyards and work a lot like a seat-beat - pull out slowly and extend the line; but don't you try to run with it.

These devices are specifically designed for professionals who work way up high - stopping falls within inches to allow great mobility.

Real quick - what's an SRL?
  • Retractable lifelines designed to stop a fall within inches.
  • Constantly under tension, but extends or retracts as the user moves up and down.
  • Offers greater protection then a shock absorbing lanyard.



Nano-lok SRL

These little devices make a big difference when it comes to working at height.

The new Nano-lok SRL's are easy to install, smaller and even take more of a beating than the previous model could.

Next-gen Features
  • Installation is 60% quicker
  • Rubber cover lasts 4x longer than the previous model
  • 4ft. overhead fall clearance per OSHA 1910
  • ANSI Class A/B models limit falls within 24"
  • 6ft. fall clearance required on Class B SRL's
  • Knee-level of higher tie-off.

"Nano-lok SRL's are the lightest ANSI certified SRL that allows for knee level tie-off."


Additional information

Weight2.7 lbs
Dimensions6 × 6 × 6 in
Hook type to structure


Hook type to Harness

Rebar Hook

Overall Length

6 ft. (1.8m)


Product Family

Lifeline Material

Web Rope

SRL Application

For vertical use

Lanyard Leg Count



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