Blind Bolt Fixing Terms Explained

Blind Bolt Fixing Terms Explained

The unique and innovative design of the Blind Bolt means that certain specific criteria need to be met in order for it to be applied successfully. Using these criteria means being aware of the way in which the dimensions of each bolt are measured, and these details are set out below.

The image above also offers a pictorial representation of each term.

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Minimum Fixing Thickness

The minimum fixing thickness is the figure applied to the minimum distance which each bolt is able to fix.

The overall thickness of the materials being clamped is the figure used to make this calculation.

Maximum Fixing Thickness

The maximum fixing thickness is the figure applied to the maximum distance that each bolt is able to clamp.

The overall thickness of the materials being clamped is the figure used to make this calculation.

Anchor Clearance

The anchor clearance is the minimum distance needed for the Blind Bolt anchor to be deployed successfully.

The measurement has to be noted with great care when fixing into Steel Hollow Sections in order to make sure that the anchor doesn’t catch on the section wall.

Depth Clearance

The depth clearance refers to the minimum space required within a cavity wall for the anchor on the Blind Bolt to successfully deploy.

The measurement has to be noted with great care when fixing into Steel Hollow Sections in order to make sure that the bolt doesn’t reach as far as the opposite section wall before the anchor is deployed.

Hole Centers

The ‘hole centres’ measurement refers to the minimum distance which has to be left between bolts when installing in multiples.

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