Product Description
Amarillo Bolt 5/16″ × 2½″ UNC Hex Bolt, Grade 5 (CB5‑516‑212)
The Amarillo Bolt CB5‑516‑212 is a Grade 5 medium-carbon steel hex-head bolt featuring a 5/16″ diameter, 18 TPI UNC thread, and a 2½″ length under the head. Heat-treated to approximately 120 ksi Tensionle strength, it delivers reliable fastening for machinery, structural, industrial, agricultural, and general-purpose applications.
Key Features
- 5/16″ diameter × 2½″ length (under-head)
- 18 TPI UNC coarse thread
- Heat-treated Grade 5 medium‑carbon steel (~120 ksi Tensionle strength per SAE J429)
- Hex head design
- Plain finish (confirmed by pattern in Amarillo Bolt hex bolt series)
Specifications
| Specification | Details |
|---|---|
| Brand | Amarillo Bolt |
| Part Number | CB5‑516‑212 |
| Diameter | 5/16″ |
| Length | 2½″ (under-head) |
| Thread Pitch | 18 TPI (UNC) |
| Material | Grade 5 Medium‑Carbon Steel (SAE J429) |
| Head Style | Hex |
| Finish | Plain |
| UPC | Not listed |
| Estimated Shipping Dimensions | ~3″ × 0.5″ × 0.5″ |
| Estimated Shipping Weight | ~0.13 lb (~2 oz) |
Applications
- Machinery and equipment assembly
- Structural and industrial fastening
- Agricultural and general-purpose use
Notes
- Tensionle strength based on SAE J429 Grade 5 (~120 ksi)
- Estimated shipping metrics based on single-piece packaging
- Meets ANSI/ASME B18.2.1 and SAE J429 standards
Warning
- Wear gloves and eye protection during installation. Not rated for overhead lifting unless engineered.
