Description
Product Overview
Choose precision strength with Bulk 1/2"-20 Grade 8 Hex Cap Screws featuring a durable zinc yellow CR+3 plating. These fine-thread UNF bolts are Made in the USA and engineered for high-load applications requiring superior vibration resistance and fine-tuned adjustment—ideal for automotive assemblies, machinery, tooling, and industrial equipment.
Manufactured from high-strength alloy steel and built to SAE J429 Grade 8 specifications, these screws deliver exceptional clamp load and tensile performance. The CR+3 chromate zinc finish improves corrosion resistance while remaining RoHS compliant, meeting modern environmental and institutional compliance standards.
These fasteners are part of the Monster Bolts USA-Made Fasteners Collection, backed by reliable fulfillment from our Florida warehouse.
Key Features
- Size: 1/2"-20 UNF (fine thread)
- Strength: High-strength Grade 8 alloy steel
- Thread Style: Fine-thread UNF for increased vibration resistance and precise torque adjustments
- Finish: Zinc Yellow CR+3 for improved corrosion resistance
- Compliance: CR+3 zinc finish is RoHS compliant
- Origin: Proudly Made in USA
- Applications: Automotive, machinery, tooling, industrial equipment, fabrication
- Bulk Packaging: Monster Bolts bulk quantities offer the lowest cost per piece for individuals and businesses needing larger volumes.
Monster Specifications
| Specification | Details |
|---|---|
| Diameter | 1/2" (0.500") |
| Thread Size | 1/2"-20 UNF (fine thread) |
| Head Style | Hex cap screw / hex bolt |
| Wrench Size | 3/4" hex wrench/socket |
| Material | Alloy steel, Grade 8 |
| Finish / Plating | Zinc yellow CR+3 (RoHS compliant) |
| Country of Origin | Made in USA |
| Standards | ASME B18.2.1 dimensions; SAE J429 Grade 8 properties |
| System of Measurement | Inch / SAE |
| Lengths Available | Available in common 1/2-20 lengths; select above. |
| Packaging | Monster Bolts bulk quantities offer the lowest cost per piece for individuals and businesses needing larger volumes. |
Matching Nuts & Washers
Pair these UNF bolts with USA-made 1/2-20 hardware:
- 1/2-20 hex nuts (Made in USA)
- Lock washers & flat washers for vibration control and load distribution
- For lifting & marine components, explore our USA-machined cable & rigging hardware
Why Choose Monster Bolts?
- Made in USA for consistent, trusted quality
- Bulk value pricing for shops, contractors, and production teams
- Fast shipping from Florida
- Real customer support from fastener specialists
Order Yours Today
Stock up on Made in USA 1/2-20 Grade 8 hex cap screws in zinc yellow CR+3 finish. Select your preferred length and quantity above and click "Add to Cart" to equip your shop with dependable UNF hardware.