ISC Klick Lock Buckle

The ISC Klick-Lock Buckle range is designed to provide secure, reliable fastening for harnesses and other height safety equipment. Each buckle incorporates a dual-action release mechanism, requiring both release buttons to be fully depressed before the buckle can be opened, significantly reducing the risk of accidental release.

For added safety, ISC Klick-Lock Buckles cannot be opened by hand while under load, even when both release buttons are pressed.

Unlike many manufacturers, ISC tests its buckles without webbing, using a straight-line (direct pull) method in accordance with the ANSI Z359.1 Standard. This testing method provides a true and accurate measurement of buckle strength, whereas testing with a sewn webbing loop can produce artificially high results due to load sharing by the webbing.

The range includes a variety of buckle, tang, and slide configurations to suit different harness designs and webbing widths.

Technical Information

BU180 – 45 mm Klick-Lock Buckle, Tang & 3-Bar Slide Set

• Configuration: 45 mm Buckle, Tang & 3-Bar Slide Set
• Minimum Breaking Strength (MBS): 20 kN (4,496 lbf)
• Tang Material: Plated Carbon Steel
• Finish: Anodised
• Colour: Red or Black
• Weight: 138 g (4⅞ oz)

BU182 – 45 mm Klick-Lock Buckle & Sliding Tang Set

• Configuration: 45 mm Buckle & Sliding Tang Set
• Minimum Breaking Strength (MBS): 16 kN (3,597 lbf)
• Tang Material: Plated Carbon Steel
• Finish: Anodised
• Colour: Red or Black
• Weight: 122 g (4.3 oz)

BU183 – 25 mm Klick-Lock Buckle & 45 mm Tang & 3-Bar Slide Set

• Configuration: 25 mm Buckle & 45 mm Tang & 3-Bar Slide Set
• Minimum Breaking Strength (MBS): 20 kN (4,496 lbf)
• Tang Material: Plated Carbon Steel
• Finish: Anodised
• Colour: Red or Black
• Weight: 124 g

BU184 – 25 mm Klick-Lock Buckle & 45 mm Sliding Tang Set

• Configuration: 25 mm Buckle & 45 mm Sliding Tang Set
• Minimum Breaking Strength (MBS): 16 kN (3,597 lbf)
• Tang Material: Plated Carbon Steel
• Finish: Anodised
• Colour: Red or Black
• Weight: 108 g

BU185 – 25 mm Klick-Lock Buckle & 25 mm Sliding Tang Set

• Configuration: 25 mm Buckle & 25 mm Sliding Tang Set
• Minimum Breaking Strength (MBS): 16 kN (3,597 lbf)
• Tang Material: Plated Carbon Steel
• Finish: Anodised
• Colour: Red or Black
• Weight: 94 g

Key Features

• Dual-action Klick-Lock release mechanism for enhanced safety.
• Requires both release buttons to be fully depressed before opening.
• Cannot be opened by hand while under load.
• Tested using a straight-line (direct pull) method without webbing for an accurate strength rating.
• Manufactured with plated carbon steel tangs for durability.
• Available in multiple buckle, tang, and slide configurations to suit different harness designs.
• Available in Red or Black anodised finishes (model dependent).