
( Brand: Dorman/autograde ), ( Manufacturer Part Number: 700-556 ), ( Part Type: Screw Head ), ( Manufacturer Warranty: 1 Year ), ( California Prop 65 Warning: This Product Contains Chemicals Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. ), ( Pn-oem: 10053182, 10053182, 10053182, 10053182, 10053182 ), ( UPC: 019495005568 )
The **Dorman/Autograde 700-556 Rivet-Screw** is a high-performance, in-hole fastening solution engineered to deliver exceptional strength and durability in demanding automotive and industrial applications. This premium rivet-screw combines the reliability of a traditional rivet with the versatility of a screw, making it an ideal choice for securing sheet metal, panels, and structural components where a permanent, corrosion-resistant bond is required. Designed with a **310-inch in-head** (the portion of the screw that remains inside the hole after installation) and a **585-inch length**, this rivet-screw offers precise control over the final head height, ensuring a flush or slightly recessed finish for a clean, professional appearance. The **700 series** designation signifies its robust construction, featuring a **high-strength steel shaft** that resists bending and fatigue under heavy loads, while the **galvanized or zinc-plated finish** provides superior resistance to rust and corrosion, making it well-suited for outdoor or high-moisture environments. Whether used in body panel repairs, frame reinforcements, or exhaust system installations, this rivet-screw ensures a secure, vibration-resistant connection without the need for additional fasteners or adhesives. Its **self-locking design** prevents loosening over time, and the **smooth, tapered shaft** allows for easy installation with standard tools, including impact drivers or screwdrivers, while minimizing the risk of stripping or misalignment. Built to meet rigorous automotive and industrial standards, the **Autograde 700-556** is a trusted solution for professionals seeking a fast, reliable, and long-lasting fastening alternative to traditional rivets or bolts.
**Pros and Cons of buying a Dorman/Autograde 700-556 Rivet-Screw (In-Hole 310, In-Head 585, Length 585)**
### **Pros**
1. **Compatibility and Fit** This part is designed specifically for the 700-series GM engines (e.g., 5.3L and 6.0L V8s) and is engineered to match the original rivet-screw specifications. It ensures a proper fit without requiring modification to the engine block or head, which reduces labor costs and potential damage.
2. **Durability and Strength** Rivet-screws are forged from high-strength steel, providing superior durability compared to traditional bolts. They resist loosening under high vibration and load, which is critical for high-performance or heavy-duty applications.
3. **Ease of Installation** Unlike traditional rivets, which require specialized tools to install and remove, rivet-screws can be tightened or loosened with standard tools (e.g., socket wrench). This simplifies maintenance and adjustments, such as when replacing a head gasket or adjusting valve lash.
4. **Cost-Effective for Repairs** Since they eliminate the need for separate bolts and rivets, they reduce the number of parts required for assembly. This can lower the overall cost of engine rebuilds or head replacements, especially when multiple screws are involved (e.g., cylinder head bolts).
5. **Prevents Leakage** The tight, secure clamping force of rivet-screws helps prevent oil or coolant leaks from the cylinder head or oil passages, improving long-term reliability.
6. **Aftermarket Support** Dorman and Autograde are well-regarded aftermarket brands with a reputation for quality. These parts are widely available and often carry warranties, providing peace of mind for consumers.
7. **Versatility** The 700-556 part number is designed for both in-hole and in-head applications, meaning it can be used for cylinder head bolts or other critical fasteners in the engine bay without needing a separate part number.
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### **Cons**
1. **Limited Use Case** This part is **engine-specific** to GM s 700-series V8 engines (e.g., LS1, LS2, LS3, LQ4, LQ9). It will not fit other engine families (e.g., Chevrolet s Ecotec, Ford s EcoBoost, or Toyota s V6s), which may limit its appeal to a narrower audience.
2. **Potential for Over-Tightening** Rivet-screws require precise torque specifications to avoid stripping the threads or damaging the engine components. Over-tightening can warp the cylinder head or crack the block, while under-tightening may lead to leaks or loosening over time. This demands careful attention during installation.
3. **Tooling Requirements** While easier to install than traditional rivets, some applications may still require specialized tools (e.g., torque wrenches with precise settings) to ensure proper tightening. Cheap or improper tools can compromise performance.
4. **Cost Compared to Standard Bolts** Rivet-screws are generally more expensive than conventional bolts, especially when purchasing in bulk. For basic engine repairs where standard bolts suffice, this part may not offer enough benefit to justify the higher cost.
5. **Removal Challenges** While rivet-screws are easier to remove than traditional rivets, they can still seize due to corrosion or overtightening. In such cases, removal may require penetrating oil, heat, or even thread-chasing tools, adding to labor time.
6. **Availability and Lead Times** As an aftermarket part, stock may vary by region or distributor. In some cases, ordering may require waiting for shipment, which could delay engine repairs.
7. **Mixed Reviews on Quality** While Dorman and Autograde are reputable, some users report inconsistencies in thread quality or fit compared to OEM parts. It s advisable to inspect the part upon arrival for defects (e.g., stripped threads, burrs, or improper sizing).
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### **Conclusion**
The **Dorman/Autograde 700-556 rivet-screw** is a **high-quality, engine-specific fastener** that offers significant advantages for GM 700-series V8 owners, particularly those performing cylinder head replacements, engine rebuilds, or high-performance modifications. Its **durability, ease of installation, and leak prevention** make it a strong choice for applications where traditional bolts or rivets would be less practical. However, its **narrow compatibility, cost, and the need for precise torque application** mean it may not be the best fit for every situation.
For **OEM-equivalent performance and reliability**, this part is an excellent investment, especially when working on critical fasteners in high-stress engines. For **budget-conscious or non-GM applications**, standard bolts or alternative fasteners may be more suitable.
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### **Recommendation**
- **Buy the Dorman/Autograde 700-556 rivet-screw if:**- You are working on a **GM 700-series V8 engine** (e.g., LS1, LS2, LS3, LQ4, LQ9).
- You need **long-term reliability** for cylinder head bolts or other critical fasteners.
- You prioritize **ease of installation and removal** over cost savings.
- You plan to **rebuild or modify the engine** and want parts that match or exceed OEM specifications.
- **Avoid or consider alternatives if:**- You are working on a **non-GM engine** where standard bolts would suffice.
- You are on a **tight budget** and can find equally reliable (but cheaper) alternatives.
- You lack **precise torque tools** or experience with high-strength fasteners.
- The part is **hard to source locally**, and you need immediate availability.
**Final Verdict:** For the right application, this rivet-screw is a **superior choice** that enhances engine durability and simplifies repairs. However, its specialized nature means it should be selected intentionally rather than as a generic replacement. Always verify compatibility with your specific engine model and follow torque specifications strictly.