L-Shaped Anchor Bolts

L-Shaped anchor bolts are embedded in concrete and used to support structural steel columns, light poles, highway signs, heavy equipment, and many other applications. The hook portion of the anchor bolt serves to create resistance so that the bolt does not pull out of the concrete foundation when force is applied.

The basic specification covering foundation anchor bolts is ASTM F1554 which covers anchor bolts designed to anchor structural supports to concrete foundations. These anchor bolts can be headed bolts, straight rods, or bent anchor bolts. The three grades 36, 55, and 105 designate the minimum yield strength of the anchor bolt.

F1554 Grade 36 Low carbon, 36 ksi yield steel anchor bolts - low carbon steel
F1554 Grade 55 High strength, low alloy, 55 ksi yield steel anchor bolts - modified mild steel
F1554 Grade 105 Alloy, heat treated, high strength 105 ksi yield steel anchor bolts - medium carbon alloy steel

 

L-SHAPED ANCHOR BOLTS

DiameterLengthHookThread Length
3/8-16 6 1 2
3/8-16 8 1 2
3/8-16 10 1 2
3/8-16 12 1 2
1/2-13 6 1 1/2 2
1/2-13 8 1 1/2 2
1/2-13 10 1 1/2 2
1/2-13 12 1 1/2 2
1/2-13 18 1 1/2 2
5/8-11 6 2 4
5/8-11 8 2 4
5/8-11 10 2 4
5/8-11 12 2 4
5/8-11 14 2 4
5/8-11 15 2 4
5/8-11 16 2 4
5/8-11 18 2 4
5/8-11 21 2 4
5/8-11 24 2 4
3/4-10 6 3 4
3/4-10 8 3 4
3/4-10 10 3 4
3/4-10 12 3 4
3/4-10 14 3 4
3/4-10 15 3 4
3/4-10 16 3 4
3/4-10 18 3 4
3/4-10 21 3 4
3/4-10 24 3 4
3/4-10 30 3 4
3/4-10 36 3 4
7/8-9 10 3 4
7/8-9 12 3 4
7/8-9 15 3 4
7/8-9 18 3 4
7/8-9 21 3 4
7/8-9 24 3 4
1-8 10 3 1/2 4
1-8 12 3 1/2 4
1-8 15 3 1/2 4
1-8 18 3 1/2 4
1-8 21 3 1/2 4
1-8 24 3 1/2 4
1-8 30 3 1/2 4
1-8 36 3 1/2 4
1 1/8-7 18 4 4
1 1/8-7 24 4 4
1 1/4-7 18 4 4
1 1/4-7 24 4 4
1 1/4-7 36 4 4

 

L-Shaped Anchor Bolts - Mechanical Requirements

GradeSizeTensile min ksiYield min ksi
36 1/4 - 4 58 - 80 36
55 1/4 - 4 75 - 95 55
105 1/4 - 3 125 - 150 105

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