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DMM Boa 30kN Locksafe Carabiner – Multi-Pack

The heavy duty version of the 25kN Boa looks very similar, but is hot forged from 14mm rather than 12mm bar to give it the 30kN major axis rating required for rescue loads.

RRP: £67.50

£50.63 Ex VAT

£60.76 Inc VAT

Stock: Available

4 in stock

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The heavy duty version of the 25kN Boa looks very similar, but is hot forged from 14mm rather than 12mm bar to give it the 30kN major axis rating required for rescue loads. The massive curved basket copes with even the busiest rigging set up and still allows devices to settle comfortably. The impressive size and ergonomics ensure it can be operated by even the largest hands with the chunkiest of gloves.

Product Name Product Code Colour MBS (Major Axis) MBS (Minor Axis) MBS (Gate Open Dimensions Weight Gate Opening (X) Conformance
30kN Boa HMS Locksafe Colour Pack of 3
83 x 122mm
EN 362:2004 B/T, EN 12275:2013 H

Additional information

Weight 0.3 kg
Dimensions 1 × 1 × 1 cm



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The classic triple-action, locking mechanism. The Locksafe is almost as simple to use as the Kwiklock, requiring just one extra push-up action of the barrel before the twist, but when locked gives even better protection from accidental opening. This is especially important in situations requiring complex, rope-running systems. A rope under tension may run transversely over other locking mechanisms exposing them to the risk of unlocking. The addition of the third required action dramatically reduces the likelihood of the same rope opening the Locksafe.Top Tip: Keep all Locksafes clean and properly maintained to increase longevity in use.
Locksafe ANSI and CSA
Developed in line with our Kwiklock ANSI mechanisms, we developed an off-axis Locksafe barrel and a Taperlock nose that both dramatically improve the gate push-in and cross gate strength.

All Locksafes listed ending with ANSI meet and exceed the requirements of the new ANSI standard ANSI /ASSE Z359.12-2009 which became effective November 2009.

All ANSI certified carabiners are then certified to the requirements of CAN/CSA Z259.12-01 (Class 7211-30)

Pear shape connectors (usually referred to as HMS connectors) often have similar characteristics to ovals in how they deal with loaded components ie. they also allow devices and connectors to self-centre. Moreover, the extended basket allows for additional component connection. Knots in a system such as an Italian hitch can rotate easily between taking-in and giving out (even with larger diameter ropes). In general, pear shaped connectors are slightly oversized to accommodate the added volume of bigger ropes and to feel secure in a gloved hand.

Every DMM product carries at least the minimum marking requirements as stipulated by CE norms.

This usually involves 2 distinct sets of markings:

Strength and Certification markings
These markings show the breaking strength of the product or component in various situations as well as relevant CE and instructional information. E.g. an alloy connector would show:

  • Gate Closed strength
  • Minor Axis strength
  • Gate Open strength
  • A ‘Read the instructions’ pictogram and the notified body number for quality management system and CE Mark.

Unique I.D. Markings

All DMM metal products carry a unique serial number. The number allows every single item to be individually traced back to its original date and order of production.

The way it works is as follows:


YR Year of Manufacture
08 2008
09 2009
10 2010
11 2011
12 2012

DAY The day of the year on which the product was marked
004 would be the 4th of January
032 would be the 1st of February
344 would be the 10th of December

XXXX Individual serial number
0001 would be the first component marked on that day
0050 would be the fiftieth component marked during the day

# The machine with which the component was serialized
A = Rotary Laser Marker
B or M = Max Box Laser Marker
C = Dot Marker

Example: 081001450A

Yr 2008 Day 100 Serial Number 1450 Machine A

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