I stock {inch machine screws} as part of our line for industrial assembly. As an ODM partner, I work closely with you to match your exact specs, finishes, and drive types. From our own Factory, I cut lead times and offer competitive pricing without sacrificing quality. You tell me the thread size in inches, the length, and the head style, and I turn it into a ready-to-ship batch made in stainless steel, carbon steel, or zinc-plated steel. I can supply UNC/UNF threads, and standard imperial sizes like 1/4"-20, 6-32, 1/2"-13, with precise tolerances. Our quality control checks every lot and I provide certificates, test reports, and coating options. If you're expanding or automating, I can provide ODM designs or modifications to fit your equipment. Partner with us for reliable supply from a real Factory, with flexible MOQs and rapid reworks if needed.
When sourcing inch machine screws, professionals seek precision, consistency, and reliable delivery for imperial assemblies. A trusted supplier offers a wide range of thread forms (UNC/UNF), head styles, and materials such as steel and stainless steel, with coatings like zinc plating and black oxide to match performance and corrosion resistance. Quality assurance matters as much as price. Look for manufacturers with traceable production records, strict dimensional tolerances, and independent tests. ISO-compliant quality systems, first article inspection, and 100% inspection options help ensure each batch fits end-use requirements. Flexible MOQs, scalable production, and responsible packaging support worldwide procurement. Global buyers gain peace of mind from a capable partner who can coordinate across time zones, offer stable lead times, and provide clear documentation for customs. By aligning with a supplier that emphasizes long-term relationships, you safeguard supply chains, reduce rework, and keep critical equipment running smoothly in diverse industries.
| Screw Size | Length (in) | Material | Finish | Drive Type | Thread Type | Head Type | Standard | Tensile Strength (ksi) | Operating Temp (C) |
|---|---|---|---|---|---|---|---|---|---|
| 1/4-20 UNC | 1.50 | Alloy Steel | Black Oxide | Phillips | UNC | Button | ASME B18.6.3 | 95 | -40 to 150 |
| 6-32 UNC | 0.75 | Stainless Steel 304 | Passivated | Phillips | UNC | Pan | ASME B18.6.3 | 72 | -20 to 260 |
| 8-32 UNC | 1.00 | Stainless Steel 316 | Electropolished | Torx T15 | UNC | Socket Cap | ASME B18.6.3 | 88 | -40 to 260 |
| 10-24 UNC | 2.00 | Alloy Steel | Zn Plated | Phillips | UNC | Pan | ASME B18.6.3 | 102 | -40 to 260 |
| 1/4-28 UNC | 0.75 | Alloy Steel | Black Phosphate | Slotted | UNC | Flat | ASME B18.6.3 | 82 | -40 to 200 |
| 1/2-13 UNC | 2.50 | Stainless Steel 304 | Bright Zinc | Hex Socket | UNC | Socket Cap | ASME B18.6.3 | 120 | -196 to 260 |
| 5/16-18 UNC | 1.25 | Carbon Steel 1018 | Cadmium Plated | Phillips | UNC | Button | ASME B18.6.3 | 85 | -40 to 200 |
| 3/16-24 UNF | 0.50 | Stainless Steel 303 | Satin | Phillips | UNF | Pan | ASME B18.6.3 | 60 | -196 to 250 |
| 6-40 UNF | 0.50 | Brass | Natural | Slotted | UNF | Fillister | ASME B18.6.3 | 25 | -60 to 150 |
| 3/8-16 UNC | 3.00 | Alloy Steel | Black Oxide | Hex Socket | UNC | Button | ASME B18.6.3 | 110 | -40 to 350 |