Description
Product Overview
Handle serious clamp loads with Bulk 9/16"-12 Grade 8 Hex Cap Screws in a durable zinc yellow CR+3 finish. These heavy-duty Made in USA alloy steel bolts are built for demanding applications in construction, industrial machinery, agricultural equipment, automotive work, and large fabrication projects.
Manufactured to SAE J429 Grade 8 mechanical specifications and finished with chromate-converted zinc (CR+3), these screws offer outstanding tensile strength and reliable corrosion resistance while remaining RoHS compliant. The yellow zinc plating also makes it easy to visually identify Grade 8 hardware during installs and inspections.
These fasteners are part of the Monster Bolts Made in USA Fasteners Collection, shipping quickly from Florida with dedicated technical support.
Key Features
- Size: 9/16"-12 UNC (coarse thread)
- Strength: High-strength Grade 8 alloy steel for heavy-duty joints
- Finish: Zinc Yellow CR+3 for corrosion resistance and easy grade identification
- Compliance: CR+3 plating is RoHS compliant
- Origin: Proudly Made in USA for consistent, traceable quality
- Applications: Structural connections, machinery, automotive, agricultural, and industrial equipment
- Bulk Packaging: Monster Bolts bulk quantities offer the lowest cost per piece for individuals and businesses needing larger volumes.
Monster Specifications
| Specification | Details |
|---|---|
| Diameter | 9/16" (0.5625") |
| Thread Size | 9/16"-12 UNC (coarse thread) |
| Head Style | Hex cap screw / hex bolt |
| Wrench Size | 13/16" hex wrench/socket |
| Material | Alloy steel, Grade 8 |
| Finish / Plating | Zinc yellow CR+3 (chromate-converted zinc), RoHS compliant |
| Country of Origin | Made in USA |
| Standards | ASME B18.2.1 dimensions; SAE J429 Grade 8 mechanical properties |
| System of Measurement | Inch / SAE |
| Lengths Available | Available in common 9/16-12 lengths; select above. |
| Packaging | Monster Bolts bulk quantities offer the lowest cost per piece for individuals and businesses needing larger volumes. |
Matching Nuts & Washers
Complete your setup with compatible USA-made hardware:
- 9/16-12 hex nuts available in matching finishes in the USA Fasteners Collection
- Flat & lock washers for better load distribution and vibration resistance
- For lifting and rigging projects, explore our USA-machined cable & rigging components
Why Choose Monster Bolts?
- Made in USA quality for demanding, mission-critical applications
- Bulk value with lower cost per piece for shops and production environments
- Fast shipping from our Florida warehouse
- Knowledgeable support from a fastener-focused team
Order Yours Today
Stock up on Made in USA 9/16-12 Grade 8 hex cap screws with zinc yellow CR+3 plating. Select your required length and quantity above and click "Add to Cart" to keep your bins ready for heavy-duty work.