Product Description
Amarillo Bolt 5/8″ × 2½″ UNC Hex Bolt, Grade 5 (CB5‑58‑212)
The Amarillo Bolt CB5‑58‑212 is a Grade 5 medium-carbon steel hex-head bolt featuring a 5/8″ diameter, 11 TPI UNC threading, and a 2½″ under-head length. Zinc-plated for corrosion resistance, it's built for reliable performance in structural, industrial, machinery, agricultural, and general-purpose applications.
Key Features
- 5/8″ diameter × 2½″ length (under-head)
- 11 TPI UNC coarse thread
- Heat-treated Grade 5 medium-carbon steel per SAE J429 (~120 ksi Tensionle)
- Zinc-plated for enhanced corrosion protection
- Hex head—standard wrench size ~15/16″
Specifications
| Specification | Details |
|---|---|
| Brand | Amarillo Bolt |
| Part Number | CB5‑58‑212 |
| Diameter | 5/8″ |
| Length | 2½″ (under-head) |
| Thread Pitch | 11 TPI (UNC) |
| Material | Grade 5 Medium‑Carbon Steel (SAE J429) |
| Head Style | Hex |
| Finish | Zinc-plated |
| UPC | Not listed |
| Estimated Shipping Dimensions | ~3″ × 1″ × 1″ |
| Estimated Shipping Weight | ~0.65 lb (~10 oz) |
Applications
- Heavy machinery and equipment assembly
- Structural bolting and industrial use
- Agricultural and general-purpose fastening
Notes
- Meets Grade 5 UNC specifications per SAE J429
- Zinc finish and specification pattern confirmed via third-party listing ([A&I Parts Center](https://aipartscenter.com/gr5-bolt-5-811-x-21-2-amarillo-bolt-cb5-58-212/)) :contentReference[oaicite:1]{index=1}
- Wrench size based on ANSI B18.2.1 for 5/8″ hex head
- Shipping weight & dimensions estimated for single-piece packaging
Warning
- Wear gloves and eye protection during installation. Verify torque per application.
