1/2" x 1-1/2" Hex Bolt: High-Strength Fastening Solution for Industrial Applications
Welcome to our comprehensive product page for the 1/2" x 1-1/2" hex bolt, a cornerstone component in heavy-duty assembly and construction. Engineered for reliability and performance, this hex head bolt is designed to meet the rigorous demands of industrial, commercial, and infrastructure projects. As a leading supplier in the fastener industry, we provide premium-grade bolts that ensure secure, long-lasting connections in critical applications.
Product Overview
The 1/2" x 1-1/2" hex bolt is a standard, yet vital, threaded fastener characterized by its hexagonal head and full or partial threading. With a nominal diameter of 1/2 inch and a length of 1.5 inches, this bolt size offers an optimal balance of strength and versatility. It is manufactured to exacting standards from high-grade materials, making it suitable for creating robust, non-permanent joints in structural steel, machinery, and heavy equipment. Whether you are in construction, manufacturing, or MRO (Maintenance, Repair, and Operations), this hex bolt is a fundamental part of your inventory for dependable fastening.
Key Features
- High-Strength Material: Typically manufactured from Grade 5 or Grade 8 steel, providing excellent tensile strength and shear resistance.
- Precision Threading: Rolled threads for superior strength and consistent fit with standard hex nuts.
- Durable Finish: Available in plain, zinc-plated, or hot-dip galvanized finishes to resist corrosion and extend service life.
- Hexagonal Head Design: Allows for high-torque application with common wrenches and sockets, ensuring tight, secure fastening.
- Wide Compatibility: Conforms to ANSI/ASME B18.2.1 standards, ensuring interchangeability and reliability in diverse applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Hex Cap Screw / Hex Bolt |
| Size | 1/2" x 1-1/2" (Diameter x Length) |
| Thread Pitch (UNC) | 13 TPI (Threads Per Inch) |
| Common Grades | ASTM A574 (Alloy Steel), Grade 5, Grade 8 |
| Head Style | Hexagon |
| Drive Type | Wrench / Socket |
| Standard | ANSI/ASME B18.2.1, SAE J429 |
| Common Finishes | Plain Black Oxide, Zinc Plated, Hot-Dip Galvanized |
| Proof Load (Grade 5, approx.) | 85,000 psi |
Application Scenarios
The versatility of the 1 2 x 1 1 2 hex bolt makes it indispensable across numerous sectors. Its primary function is to clamp materials together with the aid of a nut, often used in conjunction with washers.
- Structural Steel Construction: Connecting steel beams, columns, and bracings in building frames and bridges.
- Heavy Machinery & Equipment: Assembling frames, housings, and components in agricultural, mining, and manufacturing machinery.
- Transportation Infrastructure: Used in guardrail systems, sign supports, and highway structures.
- Industrial Maintenance: Essential for plant upkeep, securing platforms, ladders, and machinery to floors or walls.
- Metal Fabrication: Fastening plates, brackets, and custom fabrications in workshops and manufacturing facilities.
Advantages
Choosing our hex bolts provides tangible benefits for your projects and supply chain.
- Superior Load Distribution: The hex head design provides a large bearing surface, distributing clamp load effectively to prevent material damage.
- Enhanced Safety & Reliability: Manufactured to strict quality controls, our bolts deliver consistent performance, reducing the risk of joint failure.
- Corrosion Resistance: With various finish options, you can select the ideal bolt for environments exposed to moisture, chemicals, or outdoor weather.
- Ease of Installation & Removal: The ubiquitous hex head allows for quick installation and disassembly using standard tools, reducing labor time.
- Cost-Effective Inventory: As a standard size, the 1/2" x 1-1/2" hex bolt is a cost-efficient stock item that meets a vast array of fastening needs.
Why Choose Us as Your Fastener Supplier
We are more than just a distributor; we are a strategic partner for your industrial fastener requirements.
- Uncompromising Quality: Every batch of our 1 2 x 1 1 2 hex bolts undergoes rigorous testing for dimensions, tensile strength, and hardness to ensure compliance with international standards.
- Extensive Inventory: We maintain large stockpiles of standard and specialized fasteners, enabling reliable, just-in-time delivery to keep your projects on schedule.
- Technical Expertise: Our team possesses deep industry knowledge and can provide technical support to help you select the correct grade, finish, and fastener for your specific application.
- Global Logistics Network: We are experienced in B2B international trade, offering seamless export documentation and reliable shipping solutions to destinations worldwide.
- Competitive Pricing: By optimizing our manufacturing and supply chain, we offer high-value products at competitive prices, ensuring you get the best return on investment.
Frequently Asked Questions (FAQ)
What is the difference between a hex bolt and a hex cap screw?
While the terms are often used interchangeably, a hex cap screw is typically manufactured to tighter tolerances and is designed to be used in tapped holes or with a nut. A hex bolt may have a slightly undersized head or shank. For most B2B industrial purposes, our 1/2" x 1-1/2" hex bolt meets the specifications for a cap screw and is suitable for demanding applications.
What grade should I choose for my project?
Grade selection depends on the required strength. Grade 5 is a medium-strength carbon steel bolt suitable for most general applications. Grade 8 is a higher-strength alloy steel bolt used for critical, high-stress applications. Our sales team can advise based on your project's engineering requirements.
Do you offer these bolts in stainless steel?
Yes. While this page highlights carbon steel grades, we also supply this size in ASTM A574 stainless steel (e.g., 304 or 316) for superior corrosion resistance in harsh environments. Please contact us for a quote on stainless steel variants.
What is the correct torque for a 1/2" x 1-1/2" hex bolt?
Proper torque is critical and varies by grade, finish, and lubrication. As a general reference, a 1/2" diameter Grade 5 bolt with a zinc finish might be torqued to approximately 90-100 ft-lbs, while a Grade 8 might reach 120-130 ft-lbs. Always consult engineering guidelines or torque charts specific to your fastener's grade and condition.
Can I order samples before placing a bulk order?
Absolutely. We encourage potential B2B clients to evaluate our product quality. We are happy to provide samples of our 1 2 x 1 1 2 hex bolt for your inspection and testing. Contact our sales department to arrange a sample request.
Ready to secure your supply of industrial-grade fasteners? Contact our team today for pricing, technical data sheets, or to discuss your specific requirements for the reliable 1/2" x 1-1/2" hex bolt and other fastener solutions.

