When your infrastructure or industrial project requires you to buy domestic stainless fasteners, Atlanta Rod & Manufacturing delivers 100% Melted and Manufactured in USA stainless steel nuts and bolts. Fabricated directly at our manufacturing facility in Lavonia, Georgia, our corrosion-resistant fasteners comply fully with the Build America, Buy America (BABA) Act and American Iron and Steel (AIS) mandates. Every lot is backed by certified domestic Mill Test Reports (MTRs) guaranteeing complete metallurgical traceability.
Buy Domestic Stainless Fasteners & High-Spec Domestic Bolts
Atlanta Rod manufactures high-integrity domestic stainless steel fasteners engineered for aggressive corrosive environments, marine infrastructure, chemical processing plants, wastewater treatment facilities, and coastal construction. From heavy structural bolting to custom engineered studs, our domestic capabilities cover diameters from 1/4” to 3” (and up to 4” on custom forging runs) in standard UNC, UNF, and 8UN thread series.
Stainless Steel Grade B8M Domestic & ASTM A193 Bolting Specifications
For applications demanding heightened pitting resistance in chloride-rich and marine environments, specifying stainless steel grade B8M domestic is critical. Manufactured from high-grade AISI 316 stainless steel with 2.0% to 3.0% molybdenum content, our ASTM A193 B8M bolts are available in both Class 1 (carbide solution treated) and Class 2 (strain-hardened for elevated tensile and yield performance). In addition, we manufacture standard 304 stainless ASTM A193 B8 fasteners, fully compliant with high-temperature and high-pressure pressure vessel codes.
| Fastener Specification & Grade | Base Material / Chemistry | Tensile Strength, min (ksi) | Yield Strength, min (ksi) | Elongation in 2", min (%) | Diameter Range | Environmental Suitability |
|---|---|---|---|---|---|---|
| ASTM A193 Grade B8 (Class 1) | AISI 304 Stainless Steel | 75 | 30 | 30% | 1/4" – 3" | General architectural, municipal water, structural atmospheric |
| ASTM A193 Grade B8 (Class 2) | AISI 304 Strain Hardened | 100 – 125 | 80 – 100 | 15 – 28% | 1/4" – 1-1/2" | High-strength structural connections, pressure equipment |
| ASTM A193 Grade B8M (Class 1) | AISI 316 Stainless Steel | 75 | 30 | 30% | 1/4" – 3" | Marine splash zones, wastewater treatment, chemical processing |
| ASTM A193 Grade B8M (Class 2) | AISI 316 Strain Hardened | 95 – 110 | 65 – 95 | 15 – 25% | 1/4" – 1-1/2" | Chloride exposure, offshore platforms, high-stress piping |
| ASTM A453 Grade 660 (Class A/B) | A286 Iron-Base Superalloy | 130 | 85 | 15% | 1/4" – 3" | High-temperature bolting up to 1300°F, power generation turbines |
| Monel 400 (ASTM B164 / F467) | Nickel-Copper Alloy | 80 | 40 | 30% | 3/8" – 2-1/2" | Subsea marine hardware, salt water exposure, hydrofluoric acid |
| Monel K500 (ASTM F467) | Age-Hardened Ni-Cu Alloy | 140 | 110 | 20% | 3/8" – 2-1/2" | High-stress marine shafting, marine valve bolting, offshore drilling |
| Inconel 600 / 625 (ASTM B166) | Nickel-Chromium Superalloy | 80 – 120 | 35 – 60 | 30 – 35% | 3/8" – 2-1/2" | Severe thermal cycling, chemical reactors, furnace hardware |
Build America Buy America Nuts & Domestic Stainless Steel Fasteners
A high-performance bolting assembly requires mating nuts manufactured to identical metallurgical rigor. Atlanta Rod forges and taps 100% Build America Buy America nuts in our Georgia plant, specializing in ASTM A194 Grade 8 (304 stainless) and ASTM A194 Grade 8M (316 stainless) heavy hex nuts. Our nuts are manufactured to ASME B18.2.2 dimensional standards with unified coarse (UNC) and 8UN threading, ensuring zero galling and optimal proof load engagement.
| Nominal Nut Size (in) | Width Across Flats F (in) | Width Across Corners G (in) | Nut Thickness H (in) | Thread Series & Pitch | ASTM A194 Gr 8/8M Proof Load (psi) |
|---|---|---|---|---|---|
| 1/2" | 7/8 (0.875) | 0.992 | 31/64 (0.484) | 13 UNC | 80,000 |
| 5/8" | 1-1/16 (1.062) | 1.205 | 39/64 (0.609) | 11 UNC | 80,000 |
| 3/4" | 1-1/4 (1.250) | 1.418 | 47/64 (0.734) | 10 UNC | 80,000 |
| 7/8" | 1-7/16 (1.438) | 1.631 | 55/64 (0.859) | 9 UNC | 80,000 |
| 1" | 1-5/8 (1.625) | 1.844 | 63/64 (0.984) | 8 UNC / 8UN | 80,000 |
| 1-1/8" | 1-13/16 (1.812) | 2.057 | 1-7/64 (1.109) | 7 UNC / 8UN | 80,000 |
| 1-1/4" | 2" (2.000) | 2.270 | 1-7/32 (1.219) | 7 UNC / 8UN | 80,000 |
| 1-1/2" | 2-3/8 (2.375) | 2.696 | 1-15/32 (1.469) | 6 UNC / 8UN | 80,000 |
| 1-3/4" | 2-3/4 (2.750) | 3.122 | 1-23/32 (1.719) | 5 UNC / 8UN | 80,000 |
| 2" | 3-1/8 (3.125) | 3.548 | 1-31/32 (1.969) | 4.5 UNC / 8UN | 80,000 |
Exotic Nickel Alloys: Monel Nuts, Monel Bolts & ASTM A453 High-Temp Studs
When operating temperatures or chemical severity exceed the boundaries of standard austenitic stainless steels, Atlanta Rod manufactures specialty nickel alloy fasteners with precision domestic craftsmanship:
- Monel Nuts & Monel Bolts: Manufactured from Monel 400 and age-hardened Monel K500, these fasteners provide near-immunity to seawater corrosion, pitting, and stress-corrosion cracking across marine, naval, and offshore applications. Explore our Monel bolts and matching Monel nuts capabilities, as well as high-tensile Monel K500 fasteners.
- ASTM A453 High-Temperature Bolting: ASTM A453 Grade 660 is an iron-base austenitic superalloy designed specifically for high-stress bolting and studs operating in elevated service temperatures up to 1300°F (704°C). Featuring yield strengths up to 105 ksi with excellent creep-rupture properties, our A453 fasteners serve power generation turbines, aerospace fixtures, and furnace components.
- Inconel Fasteners: In-house domestic forging and thread rolling of high-temperature Inconel 600 bolts and Inconel 625/718 studs for severe thermal oxidation environments.
Precision Rolled Threads on Domestic Stainless Bolts
Stainless steels and nickel alloys work-harden rapidly during mechanical processing. Atlanta Rod utilizes heavy-duty rotary and cylindrical die thread rolling to cold-form threads onto our stainless bolts. Thread rolling produces an ultra-smooth root radius that dramatically reduces galling tendencies during field installation while boosting tensile fatigue strength by 20% to 30% over cut-threaded alternatives.
BABA, AIS & Domestic Fastener Compliance Certification
Every stainless bolt, nut, and threaded stud manufactured by Atlanta Rod complies 100% with:
- Build America, Buy America (BABA) Act: Certifying all manufacturing processes from melting and hot forging to threading occur in the United States.
- American Iron and Steel (AIS) Provisions: Mandatory for EPA-administered clean water infrastructure.
- Certified Mill Test Reports (MTRs): Comprehensive chemical composition, mechanical test results, heat numbers, and domestic melt origin documentation.
- Complete Fastener Line: Seamlessly integrate with our heavy hex bolts and standard domestic bolts.
Need a fast quote on certified domestic stainless fasteners or custom alloy nuts? Contact our engineering sales specialists today at 800-633-9794 or email Sales@ATLROD.com for submittals and immediate bids.