We manufacture custom anchor bolts to ASTM F1554 (Grades 36, 55, and 105) and to your drawings, J-bolts, L-bolts, U-bolts, and plate bolts. Everything is fabricated, threaded, and hot-dip galvanized at our Houston facilities. AISC certified, family-owned since 1988.
An anchor bolt is a threaded steel fastener set into concrete that ties a structural member (a column, base plate, equipment skid, or pole foundation) down to its footing, carrying tension and shear loads into the concrete. You’ll also hear them called foundation bolts, or hold-down bolts. They’re specified by grade, diameter, length, and embedment shape, and we build them to ASTM F1554 and your engineer’s exact bend, thread, and length, then hot-dip galvanize them in-house before they ship.
Every anchor bolt leaves our Houston shop built to a specific drawing. Common configurations include:
Need the whole connection built as one unit? We’ll pair the bolts with our steel embeds and embedded plates or threaded rebar anchor cages so it all ships as one source.
ASTM F1554 is the spec that governs anchor bolts in the U.S. It sets three strength grades:
| Grade | Min. Yield (ksi) | Tensile (ksi) | Typical Use & Weldability |
|---|---|---|---|
| F1554 Grade 36 | 36 | 58–80 | General structural anchoring; readily weldable mild steel |
| F1554 Grade 55 | 55 | 75–95 | Higher-load connections; weldable with the S1 supplement |
| F1554 Grade 105 | 105–125 | 125–150 | High-strength; quenched & tempered, not generally weldable |
Diameters run 3/4 inch to 3 inches in standard 1/4-inch increments (no custom diameters). Nominal sizing covers 1 inch to 3 inches; pitch-diameter sizing is available from 3/4 inch to 2-1/4 inch. Lengths are cut to your spec. See the standard size chart below. Past F1554, we regularly run A36, A572 Grade 50, A193 B7, A354 Grade BC, A193 B8 and B8M, A320 B8 and B8M, L7 and L43, 1011 and 1018, and 304/316 stainless when the spec calls for it.
| Nominal Diameter — 1/4-inch increments, no custom | ||
|---|---|---|
| 1″ | 1¼″ | 1½″ |
| 1¾″ | 2″ | 2¼″ |
| 2½″ | 2¾″ | 3″ |
Corrosion protection isn’t a separate trip to an outside vendor. We hot-dip galvanize anchor bolts, rods, and assemblies in-house per ASTM A123 (fabricated steel), A153 (bolts, nuts, washers), F2329, and A767 (rebar), on the same property we fabricated them on.
Our kettle has run right next to the fab shop since 2007. That buys you consistent zinc thickness lot to lot, one QC team from raw steel to finished part, and nobody waiting on an outside galvanizer’s calendar, a big reason our galvanized anchor bolt lead times beat the industry.
Send us a drawing and we build to it. Standard capabilities include:
No drawing yet? Send a sketch and we’ll help nail down the detail before anything hits the floor.
We’re an AISC certified fabricator with a Certified Welding Inspector (CWI) on staff. Every anchor bolt order traces back to the heat, backed by mill test reports (MTRs).
From the dock to the final galvanizing, one quality team signs off on every lot. See our full quality and safety standards.
Don’t see your sector? We ship anchor bolts and fabricated steel nationwide, tell us what you’re building.
Yes, they’re the same thing. ASTM F1554 happens to call the straight threaded rod an ‘anchor rod,’ but everybody says ‘anchor bolt,’ and it covers bent shapes like J-bolts and L-bolts too. We just call them anchor bolts and build whatever your drawing shows.
All three. Grade 36 at 36 ksi minimum yield, Grade 55 at 55 ksi (weldable when you add the S1 chemistry supplement), and Grade 105 at 105 ksi for high-strength work. When a spec calls for something else, we also run A36, A572 Grade 50, A193 B7, A354 Grade BC, A193 B8 and B8M, A320 B8 and B8M, L7 and L43, 1011 and 1018, and 304/316 stainless.
J-bolts, L-bolts, U-bolts, plate (template) bolts, double-end threaded rods, and continuous all-thread. We’ll also kit the whole assembly, heavy hex nuts, washers, and setting templates. Whatever the bend, thread, and length your engineer drew, that’s what we build.
Yes. Our kettle has sat on the same property as the fab shop since 2007. We fabricate, thread, and hot-dip galvanize per ASTM A123, A153, and F2329 right here, so nobody’s waiting on an outside galvanizer’s schedule, and one QC team owns the part from raw steel to the truck.
Diameters from 3/4 inch to 3 inches in 1/4-inch increments (nominal 1 inch to 3 inches, plus pitch diameter 3/4 inch to 2-1/4 inch) — standard sizes, no custom diameters. We cut length to your spec, there’s no real maximum short of what’ll fit on a truck. Threads run UNC or 8-UN, single- or double-end.
Yes. We’re an AISC certified fabricator with a Certified Welding Inspector (CWI) on staff. Every order traces back to the heat, and we’ll provide mill test reports (MTRs) on request.
Send us the drawing, material description, or bolt schedule and we’ll price it. Request a quote online or call the Houston shop at 713.939.9999. Standard, rush, expedited, bring it on.
Fast, fabrication, threading, and galvanizing all happen in our Houston shop, so we’re not handing your part off to anybody. That’s why our lead times beat the industry. We turn standard, rush, and expedited schedules for LNG, power generation, petrochemical, and infrastructure jobs nationwide.
Send us your drawing and bolt schedule. We turn standard, rush, and expedited anchor bolt orders, with lead times that beat the industry.
