Anchor Stud
Studs & Rods · bent anchor stud · machinery anchor stud · foundation stud
Definition: An anchor stud is a bent rod — L-shaped, U-shaped, or straight — grouted into concrete to anchor heavy machinery, bases, and equipment in place.
Anatomy
■ Head■ Shank■ Threads■ Point
Governing standards: ASTM F1554 · Manufacturer specified
Common Sizes
| Inch | Metric | Head width | Head height |
|---|---|---|---|
| 1/2-13 | M12 | — | 6 to 18 long |
| 5/8-11 | M16 | — | 8 to 24 long |
| 3/4-10 | M20 | — | 10 to 36 long |
Representative sizes. Full dimensional data lives in the standards listed below.
Grades & Strength
| Grade | Material | Tensile (psi) | Marking |
|---|---|---|---|
| Grade 36 | low carbon steel | 58,000 | F1554 36 |
| Grade 55 | medium carbon steel | 75,000 | F1554 55 |
Materials
- Zinc-plated steel
- Hot-dip galvanized steel
- Stainless steel
Pros & Cons
Pros
- Strong embedment in grout
- Positionable during grouting
- Standard in millwright work
Cons
- Needs a drilled or formed hole
- Grout must cure fully
- Bend orientation must be right
Typical Uses
- Machinery foundations
- Compressor and pump bases
- Millwright work
- Equipment grouting
Alternatives & Related
- Anchor Bolt — Forged-head bolt for structural steel
- J-Bolt — Hooked embedment for sills and light equipment
- Chemical Anchor — Epoxy-bonded rod in cured concrete
Where to Buy
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FAQ
What is an anchor stud?
A bent or straight rod grouted into concrete to hold machinery and equipment bases — common in millwright and foundation work.
Anchor stud vs anchor bolt?
An anchor stud is usually a bent rod grouted into a drilled hole; an anchor bolt has a forged head or L-bend cast into the concrete.