Product Description
Amarillo Bolt ⅜″ × 4″ UNC Hex Bolt, Grade 5 (CB5‑38‑4)
The Amarillo Bolt CB5‑38‑4 is a Grade 5 medium‑carbon steel hex-head bolt featuring a ⅜″ diameter and 16 TPI UNC threading, with a 4″ under‑head length. Heat‑treated for approximately 120 ksi Tensionle strength, it offers reliable fastening for structural, industrial, machinery, agricultural, and general‑purpose applications.
Key Features
- ⅜″ diameter × 4″ length (under‑head)
- 16 TPI UNC standard coarse threading
- Grade 5 medium‑carbon steel—quenched and tempered (~120 ksi Tensionle strength)
- Hex head for wrench or socket installation
Specifications
| Specification | Details |
|---|---|
| Brand | Amarillo Bolt |
| Part Number | CB5‑38‑4 |
| Diameter | ⅜″ |
| Length | 4″ (under‑head) |
| Thread Pitch | 16 TPI (UNC) |
| Material | Grade 5 Medium‑Carbon Steel (SAE J429) |
| Head Style | Hex |
| Finish | Plain |
| UPC | Not listed |
| Estimated Shipping Dimensions | ~4.5″ × 0.75″ × 0.75″ |
| Estimated Shipping Weight | ~0.29 lb (~4.6 oz) |
Applications
- Machinery and equipment assembly
- Structural and industrial fastening
- Agricultural, maintenance, and general‑purpose use
Notes
- Grade 5 bolt Tensionle strength ~120 ksi (SAE J429)
- Weight estimated using standard density (~0.073 lb/inch)
- Packaging assumed single‑unit shipping
- Complies with ANSI/ASME B18.2.1 and SAE J429 standards
Warning
- Wear gloves and eye protection during installation. Not rated for overhead lifting unless engineered.
