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NLG tether loop 3kg aircraft-grade steel green PU sleeve with orange NLG ID tag front view | CMT Group UK

NLG Tether Loop 3kg Aircraft-Grade Tethering use | CMT Group UK

Locking tool tethering loop rated to 3kg for hammers, saws, spanners, and any hand tool with a captive hole, handle, or shaped mid-section.

3kg max load, dynamically tested at 2:1 safety factor
Certified to ANSI/ISEA 121-2023 and NS 9611:2022+AC
CE and UKCA marked
Aircraft-grade steel core with anti-puncture abrasion-resistant PU sleeve
Lock Alert indicator gives visual confirmation of correct installation before use
One-way locking thread with thumb screw, permanent fixture option with Locktite
NLG ID orange scannable tag for certificates, inspection records, and installation videos
Available in three sizes: 120mm, 150mm, and 170mm

NLG Tether Loop - 3kg Aircraft-Grade Tool Tethering

Code

NLG10138

In stock

Locking tool tethering loop rated to 3kg for hammers, saws, spanners, and any hand tool with a captive hole, handle, or shaped mid-section.

3kg max load, dynamically tested at 2:1 safety factor
Certified to ANSI/ISEA 121-2023 and NS 9611:2022+AC
CE and UKCA marked
Aircraft-grade steel core with anti-puncture abrasion-resistant PU sleeve
Lock Alert indicator gives visual confirmation of correct installation before use
One-way locking thread with thumb screw, permanent fixture option with Locktite
NLG ID orange scannable tag for certificates, inspection records, and installation videos
Available in three sizes: 120mm, 150mm, and 170mm

NLG 120mm Tether Loop Code NLG101380

£9.31 £7.76

Bulk Discounts

Buy 20 for £8.76 £7.30 each and save 6%
Buy 50 for £8.23 £6.86 each and save 12%

BULK DISCOUNT	20	50
Price	£7.30 £8.76	£6.86 £8.23

NLG 150mm Tether Loop Code NLG101381

£9.48 £7.90

Bulk Discounts

Buy 20 for £8.98 £7.48 each and save 5%
Buy 50 for £8.38 £6.98 each and save 12%

BULK DISCOUNT	20	50
Price	£7.48 £8.98	£6.98 £8.38

NLG 170mm Tether Loop Code NLG101413

£9.58 £7.98

Bulk Discounts

Buy 20 for £8.38 £6.98 each and save 13%
Buy 50 for £7.18 £5.98 each and save 25%

BULK DISCOUNT	20	50
Price	£6.98 £8.38	£5.98 £7.18

Product Details

NLG Tether Loop

Tool tethering attachment loop rated to 3kg, designed for hammers, hand saws, spanners, and any tool with a captive hole, handle, or shaped mid-section. An aircraft-grade steel core runs inside an anti-puncture PU sleeve, locked in place by a one-way thumb screw thread with Lock Alert visual confirmation that the attachment is correctly seated. Available in 120mm, 150mm, and 170mm to suit different tool sizes.

How Lock Alert and the One-Way Thread Prevent a False Sense of Security

A tether attachment that looks secure but has not been correctly threaded will hold until it does not. On a working at height site, the moment of failure is a dropped tool. The Tether Loop's one-way thread mechanism can only engage in the correct direction, removing the possibility of cross-threading or partial engagement. The Lock Alert indicator then provides a visible confirmation that the thumb screw is fully seated before the tool is put into use. No guesswork, no reliance on a worker feeling whether it is tight enough.

Key Features

Aircraft-grade steel core: Structural integrity rated to 3kg across all three sizes, tested dynamically with a 2:1 safety factor. Handles heavier hand tools that a standard tether ring cannot.

Anti-puncture PU sleeve: Abrasion-resistant polyurethane casing protects the steel core in dirty, rough, and wet working environments. Easier to clean than bare steel and resists damage from sharp edges and site debris.

Lock Alert installation indicator: Visible indicator on the thumb screw confirms the one-way thread is correctly seated. If Lock Alert has not confirmed installation, the attachment is not secure. Removes the most common cause of tether attachment failure at the point of installation.

One-way locking thread: Can only be threaded in the correct direction. Eliminates cross-threading and partial engagement. Thumb screw is then tightened until Lock Alert confirms full seating.

Permanent fixture option: Apply a small amount of Locktite threadlocking adhesive to the thread before final tightening for tools that are always used at height. Creates a factory-level permanent attachment without specialist equipment.

Three sizes: 120mm suits compact tools; 150mm suits standard hammers and hand saws; 170mm suits larger tools and handles requiring additional loop clearance for lanyard connection.

NLG ID serialised technology: Each loop carries a unique serial number. Scan the orange NLG ID tag to access certificates, Declarations of Conformity, and installation videos instantly from a phone.

Who Is This For

Trades and roles:

Scaffolders
Carpenters and joiners working at height
Electricians
Telecoms engineers
Construction operatives
Rope access technicians
Utilities engineers

Industries:

Construction
Telecoms and utilities
Wind energy and renewables
Rail
Oil and gas
Building services and fit-out

Specifications

Specification	Detail
Product Name	NLG Tether Loop - 3kg Aircraft-Grade Tool Tethering
SKU	NLG10138
Product Type	Locking Tool Tethering Attachment Loop — Step 1 Tether Point
Max Load	3 KG / 6.6 LBS (all sizes)
Load Testing	Dynamic, 2:1 Safety Factor, Third-Party Certified
Safety Standards	ANSI/ISEA 121-2023, NS 9611:2022+AC
Compliance Markings	CE, UKCA
Core Construction	Aircraft-grade steel core
Sleeve	Anti-puncture, abrasion-resistant PU protective sleeve
Locking Mechanism	One-way locking thread with thumb screw
Installation Indicator	Lock Alert — visual confirmation of correct thread seating
Permanent Fixture Option	Compatible with Locktite threadlocking adhesive
NLG ID Technology	Scannable orange tag — access certificates, inspection records, and installation videos via phone
Serialisation	Unique serial number per unit
Max Lanyard Length	200 CM / 78 IN

Size guide

Size	Product Code	Loop Length	Typical Use
Small	NLG101380	120mm	Compact tools with small captive holes or narrow handles
Medium	NLG101381	150mm	Standard hammers, hand saws, mid-size spanners and wrenches
Large	NLG101413	170mm	Larger tools, wider handles, tools requiring more loop clearance for lanyard connection

Compatibility

Application or tool type	Status
Tools with captive holes (hammers, saws, screwdrivers, chisels, spanners)	✓ Compatible
Tools with handles (hammers, mallets, hand saws)	✓ Compatible
Shaped mid-section tools (large spanners, wrenches, podgers)	✓ Compatible
Wet, dirty, and abrasive site environments	✓ Compatible
Permanent fixture with Locktite threadlocking adhesive	✓ Compatible
Tools weighing over 3kg	✗ Not Suitable — use NLG Tether Choke (20kg rated)
Power tools — require specialist tethering attachment methods	✗ Not Suitable
Personal fall arrest — this is a tool attachment, not a fall protection component	✗ Not Suitable

Who Is This For

These tether loops are used by workers who carry heavier hand tools at height and need a certified, verifiably-installed tether point rated to 3kg. Carpenters and joiners working from elevated platforms with hammers and saws, scaffolders with large spanners, and telecoms engineers on mast work carrying a mix of heavier hand tools are all typical users. The Lock Alert feature makes this the right choice for sites running formal tool tethering inspection programmes, where visual installation confirmation is part of the compliance process. Like the Tether Ring, the Tether Loop is Step 1 in the NLG three-part tethering system. It is the correct choice where the tool weighs more than 1kg or where a handle-based attachment is required.

Typical Applications

Tethering hammers and mallets on scaffolding platforms, elevated concrete decks, and MEWP baskets where tool drops are a live risk.
Securing hand saws through the handle on elevated timber frame and fit-out work.
Creating a load-rated tether point on large spanners and wrenches with captive holes or shaped mid-sections weighing up to 3kg.
Providing a permanent factory-style tether point on tools that are always used at height, using the Locktite permanent fixture option.
Supporting dropped object prevention (DROPS) programmes where serialised, third-party certified tether points are required for compliance records.
Meeting the employer's duty under the Work at Height Regulations 2005 to prevent objects falling from height, for tools up to 3kg.

How to Use

Step 1: Select the correct size. The loop must pass through or around the tool and leave sufficient clearance for the lanyard to connect. 120mm suits compact tools; 150mm suits most hammers and saws; 170mm suits larger tools or handles needing more clearance.

Step 2: Pass the Tether Loop through the captive hole, through the handle, or around the narrower shaped mid-section of the tool.

Step 3: Align the thumb screw with the threaded head. Turn in the correct direction only, the one-way thread will not engage if reversed. Tighten until the Lock Alert indicator confirms correct installation.

Step 4: Test the tether point firmly before putting the tool into use. If Lock Alert has not confirmed installation, do not use.

Optional, Permanent fixture: Apply a small amount of Locktite threadlocking adhesive to the thread before final tightening for a permanent attachment on tools always used at height.

Step 5: Connect an appropriate NLG tool lanyard rated to at least 3kg. Attach to the anchor point before beginning work.

Step 6: After any drop event, quarantine the Tether Loop immediately and inspect against the NLG Inspection Checklist before returning it to service.

Common Mistakes

Ignoring Lock Alert. If the indicator has not confirmed correct installation, the thread is not fully seated. Do not use the tool at height until it has.
Choosing too small a size. The loop must pass through or around the tool with room for the lanyard to connect. A loop that is too tight on the handle compromises the attachment.
Using on tools over 3kg. The 3kg max load applies to all three sizes. For heavier tools, use the NLG Tether Choke rated to 20kg.
Skipping the pull test. Always test firmly after installation, regardless of Lock Alert confirmation.
Attempting to reverse the thread. The one-way mechanism will not engage in reverse. If resistance is felt immediately, check the thread direction before applying force.

Safety

The NLG Tether Loop is rated to 3kg maximum load across all three sizes. Do not use on tools exceeding this weight. This product is a tool tethering attachment only. It is not a personal fall protection component and must not be used as part of a fall arrest or fall restraint system. The Lock Alert indicator must confirm correct installation before the tool is used at height. After any drop event, quarantine the loop and inspect all components before returning to service. Employers have a duty under the Work at Height Regulations 2005 to take suitable steps to prevent objects falling from height.

Maintenance

Inspect before each use. Check the PU sleeve for cuts, punctures, and abrasion damage. Check the steel core at each end where it exits the sleeve for deformation or corrosion. Check the thumb screw thread for wear or damage. Clean with a water-dampened cloth and mild soap solution; air dry away from direct heat and sunlight. Store in a clean, dry environment away from fumes, solvents, and corrosive elements. Conduct formal inspections using the NLG Inspection Checklist, recorded by serial number. Retire immediately if the sleeve is punctured, the core is deformed, or the locking mechanism does not function correctly.

Frequently Asked Questions

Q: What tools does the Tether Loop work on?
A: The Tether Loop works on any tool with a captive hole, a handle, or a shaped mid-section. That covers hammers, mallets, hand saws, screwdrivers, chisels, spanners, wrenches, and podgers. The ability to loop through a handle, not just a captive hole, makes it the correct choice for tools like hammers and saws where a Tether Ring cannot be fitted. For tools without any of these features, the NLG D-Ring Tether with Tether Tape is the alternative.

Q: What is Lock Alert and why does it matter?
A: Lock Alert is NLG's visual installation indicator built into the Tether Loop's thumb screw. When the one-way thread is correctly engaged and the thumb screw is fully tightened, Lock Alert provides a visible confirmation that the attachment is secure. If the indicator has not confirmed installation, the thread has not seated correctly and the loop must not be used at height. It removes the most common failure point in tether attachment — an operative assuming a loop is secure because it feels tight, when it has only partially engaged.

Q: What do the safety standards mean for UK site compliance?
A: The Tether Loop is certified to ANSI/ISEA 121-2023, the current international standard for dropped object prevention equipment covering design, testing, and performance requirements for tool tethering systems. It is also certified to NS 9611:2022+AC, the standard specifically for personal tool attachment systems used at height. Dynamic load testing at 2:1 safety factor means the loop is tested at 6kg before certification against its 3kg rating. CE and UKCA marking confirms assessment against UK and European safety requirements. Independent laboratory certificates and Declarations of Conformity are available on request from NLG.

Q: What is the Tether Loop NOT suitable for?
A: The Tether Loop is not suitable for tools weighing more than 3kg. For heavier tools, the NLG Tether Choke rated to 20kg is the correct alternative. It is not suitable for power tools, which require specialist attachment methods. It must not be used as a personal fall protection component in any fall arrest or restraint system. Attempting to reverse the one-way thread will not engage the mechanism and will damage the thread.

Q: What is the difference between the NLG Tether Loop and the NLG Tether Ring?
A: The Tether Ring is rated to 1kg and is installed with pliers in the same way as a key ring, suited to captive-hole and shaped-section tools. The Tether Loop is rated to 3kg, installs through a captive hole or around a handle, and locks with a thumb screw confirmed by Lock Alert. If a tool weighs over 1kg, has a handle rather than just a captive hole, or requires visual installation confirmation, the Tether Loop is the correct choice. Both carry CE and UKCA marking and use the same NLG ID serialisation system.

Q: Can I make the Tether Loop a permanent fixture on a tool?
A: Yes. Apply a small amount of Locktite threadlocking adhesive to the thread before final tightening. This creates a permanent attachment suitable for tools that are always used at height and do not require the loop to be removed between uses. Standard installation without Locktite remains appropriate for tools where the loop needs to be transferable.

Q: When should the Tether Loop be retired from service?
A: Retire the loop immediately if the PU sleeve shows puncture damage or significant abrasion, if the steel core shows deformation or corrosion at either end, or if the thumb screw thread is worn or no longer engages correctly. Any loop involved in a drop event must be quarantined and inspected against the NLG Inspection Checklist before it is returned to service. If a loop has arrested an actual drop, consider retiring it regardless of visible condition.

Q: What lanyard do I need to use with the Tether Loop?
A: The lanyard must be rated to at least 3kg to match the Tether Loop's maximum load rating. The maximum lanyard length is 200cm. NLG tool lanyards are rated and tested to match NLG tether attachments and are the recommended pairing.

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