Headed Anchor Bolts

A headed anchor bolt is genuinely cast directly into concrete before it cures, so its forged head anchors the bolt through bearing against the surrounding concrete, not through friction or adhesive bond the way a post-installed anchor does.

Here is why this matters. Because this bearing anchorage genuinely works by resisting a cone-shaped breakout failure that forms in the concrete around the embedded head when the bolt is pulled, the anchor’s actual pullout capacity depends genuinely on both the embedment depth and the distance to the nearest free edge or neighboring anchor, not on embedment depth alone. If that breakout cone is close enough to a free edge or another anchor’s cone to intersect it, the concrete can genuinely break out at a lower load than the embedment depth alone would suggest.

A genuine, honest limitation is worth stating plainly. Because this edge-distance and spacing dependency is genuinely part of the anchor’s real capacity, engineers and buyers must confirm the actual edge distance and anchor spacing in their specific concrete member against the required breakout geometry, rather than assuming a headed anchor bolt’s published rated capacity, often based on unlimited edge distance test conditions, applies unchanged to their actual installation. Where edge distance or spacing is inadequate, the real, installed capacity is genuinely lower and this reduction must be calculated and accounted for, not assumed away.

Akbar Fasteners Pvt. Ltd. exports to over 50 countries, and our headed anchor bolt range is manufactured and verified for head dimensions and tensile compliance under our ISO 9001:2015 quality system.