Description
Product Overview
Get fine-thread precision and high-strength performance with Bulk 9/16"-18 Grade 8 Hex Cap Screws finished in zinc yellow CR+3. These Made in USA UNF-thread bolts are ideal for automotive suspension, machinery, tooling setups, and industrial equipment where increased vibration resistance and fine-tuning capability are required.
Manufactured from alloy steel to meet SAE J429 Grade 8 strength requirements, these hex cap screws provide exceptional tensile performance and consistent dimensional accuracy. The CR+3 chromate zinc finish adds corrosion resistance while remaining RoHS compliant, making them suitable for modern production and OEM use.
These bolts are part of the Monster Bolts Made in USA Fasteners Collection, backed by fast fulfillment and real customer support.
Key Features
- Size: 9/16"-18 UNF (fine thread)
- Strength: High-strength Grade 8 alloy steel
- Thread Style: Fine-thread UNF for improved vibration resistance and precise torque settings
- Finish: Zinc Yellow CR+3 for corrosion resistance and easy identification
- Compliance: CR+3 finish is RoHS compliant
- Origin: Proudly Made in USA for traceable quality
- Applications: Automotive, machinery, fabrication, tooling, 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"-18 UNF (fine 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 | Offered in a range of 9/16-18 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 with USA-made complementary hardware:
- 9/16-18 hex nuts (fine-thread, USA-made)
- Flat & lock washers for improved load distribution and vibration control
- For rigging or lifting setups, view our USA-machined cable & rigging components
Why Choose Monster Bolts?
- Made in USA: Reliable, traceable, high-strength bolts
- Bulk value: Lower cost per piece for large users and shops
- Fast fulfillment: Ships quickly from Florida
- Fastener specialists: Real support for technical and purchasing questions
Order Yours Today
Stock up on Made in USA 9/16-18 Grade 8 hex cap screws with a corrosion-resistant zinc yellow CR+3 finish. Choose your required length above and click "Add to Cart" to equip your operation with dependable UNF hardware.