
Trusted Stud Manufacturer

Special and Standard Stud Bolts
Types of Studs
Explore the versatility of Double End Studs, Shoulder Studs, and Tap End Studs for your projects. These essential fasteners ensure secure connections for various applications. Whether you need robust support or a refined finish, our selection has you covered. Find the ideal solution for your fastening needs today!
Materials
Kelko is proud to offer a large variety of materials!
1018 Low Carbon Steel 1045 Medium Carbon Steel 1117 Low Carbon Steel 1137 Low Carbon Steel 1141 Medium Carbon Steel 1141 Heat Treated Medium Carbon Steel 1213 Low Carbon Steel 1215 Low Carbon Steel 12L15 Low Carbon Steel 303 Stainless Steel 304 Stainless Steel 410 Stainless Steel 4140 High Carbon Steel 4140 Heat Treated High Carbon Steel 416 Stainless Steel 655 Silicon Bronze Alloy 20 Aluminum ASTM A193 Grade B7 High Carbon Steel ASTM A193 Grade B7M High Carbon Steel ASTM A193 Grade B8 316 Stainless Steel ASTM A193 Grade B8CL2 316 Stainless Steel ASTM A193 Grade B8M 316 Stainless Steel ASTM A193 Grade B8MCL2 316 Stainless Steel ASTM A307 Grade A Low Carbon Steel ASTM A354 Grade BC High Carbon Steel ASTM A354 Grade BD High Carbon Steel Brass Carpenter 20 ETD-150 High Carbon Steel Fatigueproof Specialty Alloys Grade 5 Medium Carbon Steel Monel® Naval Brass SAE J429 Grade 5 Medium Carbon Steel SAE J429 Grade 8 High Carbon Steel Silicon Bronze Stressproof Specialty Alloys
Finishes
Kelko is proud to offer a vast amount of quality finishes
Black Manganese Phosphate Black Oxide Black Zinc Cadmium Cadmium & Clear Cadmium & Yellow Cadmium QQP Copper Coated Hot Dip Galvanized Passivated Phosphate Coated Plain – No Finish Teflon Coated Thread Lock Patch Zinc Zinc Chromate (Clear, Blue, Yellow, Green) Zinc Iron & Yellow Zinc Phosphate Zylan Coated
Stud Bolt Diameter (Round or Hex)
1/4" 5/16" 3/8" 25/64" 7/16" 15/32" 1/2" 9/16" 5/8" 3/4"7/8" 1" 1-1/8" 1-1/4" 1-3/8" 1-1/2" 1-5/8" 1-3/4" 2"
Kelko is proud to offer a variety of diameters in both English and metric sizes!
Stud Bolt Diameter (Metric Dimensions)
M10 M12 M1 M20 M6 M8
Threading, Length, Production
Ohio's premier fastener manufacturer is simply doing things right, from small batch orders to large production runs, Kelko Products continues to be here for you! Stop waiting, start calling us to get a free estimate on your production run today!
Thread Fits
At Kelko Products, we offer a wide range of precision thread fittings to meet your project’s exact requirements. Our capabilities include industry-standard **UNC** and **UNF** threads in classes **2A**, **3A**, and **5A**, as well as specialized options like **5HF** and **5CFS** for high-performance applications. We also supply **50NF** and **NPT** threads for fluid and pressure systems, along with **Left Hand** thread configurations when reverse threading is required. For metric applications, we provide **Metric 6g** fittings, ensuring compatibility with global standards. Whether you need durability, precision, or specialty threading, we have the expertise and inventory to deliver.
Length
Threading Capacity Up To 20 ft.
Production Capacity
We specialize in short runs and minimal lead times for single piece or 10,000 parts



