Headed Bolts
At Atlanta Rod, we specialize in manufacturing custom headed bolts built for demanding industrial and construction applications. Our bolts are available in carbon, alloy, stainless, and exotic steels—all produced to meet or exceed ASTM specifications. Whether you need standard hex-head bolts, heavy-hex bolts, or engineered special heads, Atlanta Rod delivers precision-machined headed bolts made to your exact specifications.
We support a full range of products including anchor bolts and forged nuts, as well as custom finishes and raw-material options. …
All manufacturing is backed by domestic certifications of melt and manufacture, ensuring quality and traceability for your project.
Order Headed Bolts Made to Your Requirements
We manufacture headed bolts ranging from ¼” to 4-½” in diameter, including metric sizes, with cut or rolled threads on one or both ends. Thread types include Coarse, Fine, Acme, Left-Hand, Lag, and Metric, ensuring compatibility across various applications.
Available Finishes and Coatings
Choose the right protection for your project’s environment:
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Plain (uncoated)
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Hot-dip galvanized
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Zinc-plated
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Custom coatings available upon request
Fast Production and Certified Quality
We understand tight project timelines. That’s why Atlanta Rod offers expedited manufacturing to align with your construction or production schedule. All products can be supplied with certifications of melt and manufacture and material test reports, ensuring compliance and traceability.
Request a Quote for Custom Headed Bolts
Looking for a reliable headed bolts manufacturer in the USA?
Contact Atlanta Rod today to get a quote or place an order for custom headed bolts engineered to meet your exact project specifications.
Hex
Bolt with a hexagonal shaped head commonly used in construction; also called a finished hex bolt. Diameters we manufacture are 3/8” to 4.” Conforms to ASTM A307, Grade A specification. See the dimensional chart for specifics.
Heavy Hex
Similar to a hex bolt but has a larger head and head bearing area. Diameters we manufacture are 3/8” to 3.” Conforms to ASTM A307, Grade B specification. See the dimensional chart for specifics.
Cap Screws
Similar to a hex bolt, but a cap screw has a washer face under the head and a chamfered end. Diameters we manufacture are 3/8” to 1-1/2” and metric equivalents. Commonly conforms to SAE J429, Grade 5 and Grade 8 specifications. See the following dimensional charts for specifics: Hex Cap Screw Dimensions and Heavy Hex Cap Screw Dimensions.
Structural
Heavy hex structural bolts. Diameters we manufacture are ½” to 1-1/2” in long or non-standard sizes. Commonly manufactured to ASTM A325 and A490 specifications.
T-Head
T-Head bolts have a t-shaped head designed to sit flush or below the material surrounding the bolt; often used in the waterworks industry. Commonly manufactured in stainless steel and conform to AWWA C111/A21.11-80 specifications.
Square Head Bolts
Designed for an easier wrench grip or to be turned by hand; typically used in construction or in railroad projects. Diameters we manufacture are 3/8” to 1-1/2” and metric equivalents. Commonly manufactured to ASTM A449 or SAE J429, Grade 2, Grade 5 and Grade 8 specifications.
Flat Head Bolts
These bolts have a smooth head and are angled under the head allowing them to sit flush in countersunk applications. Diameters we manufacture are 3/8” to 1-1/2” and metric equivalents. Commonly manufactured to ASTM A307, A449 and SAE J429 specifications.
Lag Bolts
Lag bolts are commonly used in the Marine Construction and DOT construction industries to connect heavy materials. We manufacture cone points as gimlet points are usually only found on small diameters. Diameters we manufacture are 3/8’’ to 2-½” and in custom lengths with custom thread lengths.
Dome Head
Used in wood applications; also called timber bolts. Diameters we manufacture are 3/8” to 1-1/2” and metric equivalents. Commonly manufactured to ASTM A307 specification.
Carriage
Very similar to a dome head bolt but carriage bolts have a square neck under the head to prevent turning. Diameters we manufacture are 3/8” to 1-1/2” and metric equivalents. Commonly manufactured to ASTM A307 specification.
Socket
Socket head cap screws are made to much tighter tolerances than standard hex bolts and withstand more torque for a tighter hold. We manufacture non-standard and specialty socket head cap screws. Diameters we manufacture are 3/8” to 2-1/4” and metric equivalents. See the dimensional chart for specifics.
Step Bolts
Step bolts are used in many applications but most commonly in the communication industry has a step on towers and utility poles. Diameters we manufacture are 3/8” to ¾.” Commonly manufactured to ASTM A449 specification.
Penta Head Bolt
Penta Head Bolts are typically used in public areas such as manhole and ground lid coverings for their added level of security. A special pentagon-shaped socket is required to use or remove the bolts and are not typically found in retail stores. Diameters we manufacture are 3/8’’ to 2-¼’’ in diameter in a variety of different materials and coatings.
Custom
We can custom manufacture virtually any headed bolt. If you are looking for something unique or not previously mentioned, please be in touch with our sales team.
FAQ
- What diameter ranges and materials are available for your headed bolts?
We manufacture hot-forged headed bolts from 3/8″ to 2-1/2″ in diameter, in carbon, alloy, stainless, and other specialty steels. - What head configurations and bolt types do you offer?
Headed bolt types available include hex, heavy-hex, cap screws, structural, T-head, square head, flat head, lag, dome head, carriage, and custom designs. - What grade specifications and certifications do you support?
We manufacture to a wide range of industry standards such as ASTM A193, A320, A354, A307, A325, A490, DIN, ISO, and more. Domestic certifications of melt & manufacture are available on request. - Can you handle custom lengths, expedited lead-times, and special coatings for project needs?
Yes — we maintain a large raw material inventory for shorter lead-times, offer custom lengths, non-standard sizes, and optional finishes (e.g., plating and special coatings) to align with project schedules and requirements.