Hover to zoom
Industrial · SKU: AE1855465
Grade 12 Alloy Steel Hex Nut, 3 Inch, Black Oxide Finish, Pkg Qty 2
This heavy-duty Grade 12 alloy steel hex nut is designed for high-strength bolting applications requiring exceptional load-bearing capacity and reliability.
Volume Pricing - Buy More, Save More
| Quantity | Discount | Unit Price |
|---|---|---|
| 1 - 10 | - | $69.99 |
| 11 - 50 | -5% | $66.49 |
| 51+ | -10% | $62.99 |
Free Shipping $200+
On qualifying orders
Fast DDP Delivery
Door-to-door service
24/7 Support
Expert assistance
Quick Answer
How Buyers Should Evaluate Grade 12 Alloy Steel Hex Nut, 3 Inch, Black Oxide Finish, Pkg Qty 2
This heavy-duty Grade 12 alloy steel hex nut is designed for high-strength bolting applications requiring exceptional load-bearing capacity and reliability. Use the quick checks below to decide whether direct checkout is enough or whether an RFQ will reduce sourcing risk.
Quick Spec Check
- System of Measurement: Metric
- Material Grade/Class: Grade 12
- Material: Alloy Steel
Purchase Details
- Online price starts at $69.99.
- Minimum order quantity: 1 unit.
- Pack quantity: 2 / Each.
- Lead time: 2-3 weeks.
Use RFQ When
- Use RFQ when you need bulk pricing, alternate pack sizes, or multi-SKU comparison.
- Request support when fit, material, or substitute selection needs confirmation before order.
- Escalate to sourcing when timeline, freight, or stocking strategy matters more than one-off checkout speed.
Technical Specifications
| System of Measurement | Metric |
| Material Grade/Class | Grade 12 |
| Material | Alloy Steel |
| Thread Size | M76 |
| Finish | Black Oxide |
| Width Across Flats | 3 inches |
Full Description
Application context, construction notes, and selection details for evaluating fit before purchase or repeat ordering.
Overview
This heavy-duty Grade 12 alloy steel hex nut is engineered for the most demanding high-strength bolting applications. It is manufactured to deliver exceptional load-bearing capacity, shear strength, and long-term reliability in critical assemblies. The 3-inch width across flats is standardized for use with common industrial wrenches and sockets, facilitating efficient installation and maintenance. With its robust coarse thread profile and durable finish, this nut provides a secure, vibration-resistant connection for structural and machinery fastening.
Key Features
Manufactured from high-strength Grade 12 alloy steel for superior mechanical properties Black oxide finish offers a layer of protection against rust and corrosion Coarse M76 thread design ensures deep engagement and reliable fastening 3-inch width across flats for compatibility with standard tooling Designed for use with corresponding high-strength bolts in tension joints
Specifications
System of Measurement: Metric Material Grade/Class: Grade 12
Material
Alloy Steel Thread Size: M76 Finish: Black Oxide Width Across Flats: 3 inches Package Quantity: 2 nuts
Applications
Heavy construction and structural steel frameworks Industrial machinery and equipment assembly Infrastructure projects including bridges and lifting systems Mining and oil field equipment maintenance Manufacturing of presses, crushers, and other high-stress machinery