Hex Cap Screws
A standard hex headed fastener with a diameter between 1/4" and 3".
| Product Description | Product Use | |
| Grade 2 | A low carbon bolt used in non critical applications. Coarse and fine threads, generally available in plain, zinc, and HDG. Also goes by ASTM A307 GR A. | |
| Grade 5 | This is a very common bolt, made from medium carbon steel and heat treated, available in coarse and fine threads and typically zinc coated. It is described often as a mid grade bolt. Technically it is a SAE J429 GR 5 bolt. | |
| Grade 8 | A case hardened bolt with a higher tensile strength than a grade 5 bolt designed for high stress applications. Available in coarse and fine threads and seen in plain and zinc typically. Also know as SAE J429 GR 8. | |
| Stainless | We primarily carry hex cap screws in two grades of stainless steel: 18-8 (aka 304) and 316. 18-8 is considered the most common and has good corrosion resistance. 316 has higher corrosion resistance and is stronger at high temperatures. Coarse and fine threads. | |
| L-9 | Sometimes called grade 9 or F911, these high strength bolts are generally 20% stronger than a grade 8 bolt. Their application is limited to fields like industry and aerospace where a PSI min of 180,000 is required. Coarse and fine, zinc coated. | |
| Aluminum | This hex bolt is light, corrosion resistant, and strong. We think more people would use it but it is cost prohibitive compared to steel. We carry it in coarse thread. | |
| Brass | Like aluminum and stainless, brass is corrosion resistant. It is a soft alloy, though and is not recommended for applications where tensile strength is a premium. Available in coarse threads. | |
| Nylon | A bolt that is extremely corrosion resistant (there's no metal) and a great insulator for electrical applications. It is not very strong or built for the long haul. Coarse thread. | |
| Silicon Bronze | Similar to brass in appearance and application (corrosion resistant), but with a little higher tensile strength. Alloy made primarily from copper and tin. Coarse thread. | |
| Metric | Much like our standard line, we carry metric bolts in 8.8 (GR 5 equivalent), 10.9 (GR 8 in standard), 18-8 and 316 stainless. They are available in coarse, fine, and extra fine pitch. | |
| Tap Bolts | These are hex bolts that are fully threaded to suit their application. They are readily available in grade 2, 5, 8, 18-8 , 316 stainless and metric. |
