Description
Product Overview
Power your toughest builds with Bulk 3/8"-16 Grade 8 Hex Cap Screws in a corrosion-resistant zinc yellow CR+3 finish. These premium Made in USA alloy steel bolts deliver the strength, reliability, and dimensional accuracy required for machinery, automotive repair, construction equipment, and heavy-duty industrial assemblies.
Precision-manufactured to SAE J429 Grade 8 mechanical properties and coated with chromate-converted zinc (CR+3), these screws provide excellent corrosion protection while meeting modern RoHS compliance requirements. The bright yellow finish helps quickly identify Grade 8 hardware in shop and field environments.
These screws are part of the Monster Bolts Made in USA Fasteners Collection, offering proven quality, fast shipping from Florida, and dedicated support.
Key Features
- Size: 3/8"-16 UNC (coarse thread).
- Strength: High-strength Grade 8 alloy steel for demanding applications.
- Finish: Zinc Yellow CR+3 for corrosion protection and high visibility.
- RoHS Compliant: CR+3 chromate conversion meets modern environmental standards.
- Origin: Made in USA with consistent process control and traceability.
- Applications: Automotive, machinery, construction, structural assemblies, and heavy 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 | 3/8" (0.375") |
| Thread Size | 3/8"-16 UNC (coarse thread) |
| Head Style | Hex cap screw / hex bolt |
| Wrench Size | 9/16" 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 common 3/8-16 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 bolts with USA-made 3/8-16 nuts and washers for a complete installation:
- 3/8-16 hex nuts available in USA-made zinc yellow and compatible finishes.
- Flat & lock washers also available under the USA fastener collection.
- For marine and lifting applications, explore our USA-machined cable & rigging components.
Why Choose Monster Bolts?
- Made in USA quality: Reliable hardware for mission-critical builds.
- Bulk value: Lower cost per piece for professionals and production environments.
- Fast fulfillment: Ships quickly from Florida.
- Dedicated customer support: Real assistance from fastener experts.
Order Yours Today
Equip your shop with Made in USA 3/8-16 Grade 8 hex cap screws in zinc yellow CR+3 plating. Select your length and quantity above and click "Add to Cart" for dependable, high-strength UNC hardware.