1. Introduction
This manual provides essential information for the proper use, installation, and maintenance of the Dorman 175-210 Cap Screws. These hex head cap screws are engineered for durability and corrosion resistance, suitable for a wide range of fastening applications in automotive, home, and industrial settings.
2. Package Contents
- 100 x Dorman 175-210 Hex Head Cap Screws
3. Product Overview

Figure 3.1: Overall view of the Dorman 175-210 Hex Head Cap Screw. This image shows the full length of the screw, including the hex head and the threaded shaft.

Figure 3.2: Close-up of the hex head. The hexagonal shape allows for easy tightening and loosening with a standard wrench or socket.

Figure 3.3: Side view illustrating the threaded shaft. The threads are precisely manufactured to ensure secure fastening.
The Dorman 175-210 cap screws feature a hex head design for easy installation and removal. They are manufactured to Grade 5 standards, indicating medium carbon steel, quenched and tempered, offering good strength and toughness. The 3/8-24 thread size is a common specification for various applications.
4. Installation and Setup
Proper installation is crucial for the performance and longevity of the cap screw. Always ensure the screw's specifications match the application requirements.
- Select Correct Size: Verify that the 3/8-24 thread size and 1-inch length are appropriate for your specific application.
- Prepare Mating Surface: Ensure the receiving hole and mating surfaces are clean, free of debris, and properly threaded.
- Thread Engagement: Ensure sufficient thread engagement for a secure connection.
- Tighten Appropriately: Use a wrench or socket that fits the hex head securely. Tighten the screw to the manufacturer's recommended torque specifications for your application. Overtightening can strip threads or damage components; undertightening can lead to loosening.
- Use Washers (Optional): Flat washers can distribute the load, and lock washers can help prevent loosening due to vibration.
Note: Always consult the specific equipment or component manual for precise torque values and installation procedures when using these cap screws as replacement parts.
5. Usage and Applications
Dorman 175-210 cap screws are versatile fasteners suitable for a variety of applications where a strong, reliable connection is required. Common uses include:
- Automotive repairs and assembly
- Machinery and equipment fastening
- General construction and DIY projects
- Securing components in various mechanical systems
Their Grade 5 rating makes them suitable for applications requiring moderate strength and resistance to shear and tensile forces.
6. Maintenance
While cap screws are generally low-maintenance, periodic inspection can ensure continued performance and safety.
- Visual Inspection: Regularly check installed screws for signs of corrosion, rust, or physical damage (e.g., bent or stripped threads, damaged heads).
- Tightness Check: Periodically verify that screws remain properly torqued, especially in applications subject to vibration or temperature fluctuations. Retighten if necessary, adhering to specified torque values.
- Cleaning: If exposed to harsh environments, clean screws as needed to prevent buildup of dirt or corrosive substances.
- Replacement: Replace any screw that shows signs of damage, excessive wear, or corrosion to maintain structural integrity. Do not reuse screws that have been significantly stressed or deformed.
7. Troubleshooting
Common issues encountered with fasteners and their potential solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Screw will not tighten | Stripped threads (screw or mating hole), incorrect thread size. | Inspect threads; replace screw if stripped. If mating hole is stripped, consider re-tapping to a larger size or using a thread repair insert. Verify correct thread size. |
| Screw loosens over time | Insufficient torque, vibration, lack of locking mechanism. | Retighten to specified torque. Consider using a lock washer, thread-locking compound, or a different type of locking fastener for high-vibration applications. |
| Corrosion/Rust | Exposure to moisture, chemicals, or harsh environments. | Clean and apply corrosion-inhibiting coating if suitable for application. Replace severely corroded screws. For future applications, consider fasteners with enhanced corrosion resistance. |
| Difficulty removing screw | Over-tightening, corrosion, thread-locking compound. | Apply penetrating oil for corrosion. Use appropriate tools and leverage. For thread-locking compounds, heat may be required (consult compound instructions). |
8. Specifications
| Attribute | Detail |
|---|---|
| Brand | Dorman |
| Model Number | 175-210 |
| Fastener Type | Hexagon Bolt (Cap Screw) |
| Head Style | Hex |
| Manufacturer Grade | Grade 5 |
| Thread Size | 3/8 inch - 24 tpi |
| Thread Style | Right Hand |
| Length | 1 inch |
| Material | Metal |
| Exterior Finish | Machined |
| Color | Multi (typically metallic silver/zinc plated) |
| Number of Pieces | 100 |
| Item Weight (per pack) | 3.05 pounds |
| Product Dimensions (packaging) | 5.5 x 4 x 2.3 inches |
| Country of Origin | Canada |
| UPC | 019495172109 |
9. Safety Information
- Always wear appropriate personal protective equipment (PPE), such as safety glasses, when installing or removing fasteners.
- Ensure tools are in good condition and correctly sized for the fastener to prevent slippage and injury.
- Do not over-torque fasteners, as this can lead to breakage or damage to components.
- Keep fasteners out of reach of children and pets.
- Dispose of damaged or worn fasteners responsibly.
10. Warranty and Support
Dorman products are manufactured to high-quality standards. For specific warranty information or technical support, please refer to the official Dorman website or contact Dorman customer service directly. You can also visit the Dorman Store on Amazon for more product details and support resources.





