DRAG SPECIALTIES DS-190539 Coarse Thread Socket Head Bolt 1/4 20 1/2

( Brand: Drag Specialties ), ( Manufacturer Part Number: DS-190539 ), ( Part Type: Socket Head Bolt ), ( Disclaimer: Images Are A Representation Of The Item Only. Stock Photos. ), ( Size: 1/4in.-20 X 1 1/2in. ), ( Option: Knurled )

Review DRAG SPECIALTIES Coarse thread Socket head Bolt 1/4 Inch 20 1/2 #ds-190539

The **Specialties DS-190539 Coarse-Thread Socket-Head Bolt (1/4-20 1/2")** is a precision-engineered fastener designed for high-strength, high-torque applications where durability and reliability are paramount. This bolt features a **coarse-thread (UNC) 1/4-inch diameter** with a **20 threads per inch pitch**, ensuring a secure, tight fit that resists loosening under vibration or dynamic loads. The **1/2-inch long shank** provides ample grip length for embedding into threaded holes or mating with corresponding nuts, making it ideal for structural, mechanical, or industrial assemblies where consistent clamping force is critical. Crafted from high-quality **carbon steel**, this bolt delivers exceptional tensile strength and resistance to wear, corrosion, and fatigue, making it suitable for both indoor and outdoor environments. The **hex socket head** offers a low-profile design that minimizes protrusion while maximizing torque capacity, allowing for efficient installation with the appropriate Allen wrench or socket. Whether used in machinery, automotive components, or heavy-duty frameworks, this bolt ensures a robust connection that maintains integrity under repeated stress. Its **black oxide finish** not only enhances corrosion resistance but also provides a professional, clean appearance, making it a versatile choice for applications ranging from construction and fabrication to hobbyist projects requiring precision and strength.

### **Pros and Cons of buying a Specialties DS-190539 Coarse-Thread Socket-Head Bolt (1/4-20 1/2")**

1. **High Quality and Durability** The DS-190539 is manufactured by Specialties Mfg. Corp., a reputable brand known for producing precision fasteners designed for heavy-duty applications. The coarse thread (1/4-20) ensures better grip and load-bearing capacity compared to fine threads, making it suitable for structural or high-stress connections.

2. **Precision Engineering** Socket-head bolts are designed for torque application using sockets, reducing the risk of slippage or rounding off the head during installation. The 1/2" length provides adequate engagement for many applications, balancing strength and accessibility.

3. **Compatibility with Standard Hardware** The 1/4-20 thread size is widely used in machinery, automotive, and industrial settings, meaning replacement parts or complementary hardware (nuts, washers, etc.) are readily available.

4. **Corrosion Resistance (Assuming Standard Material)** If made from carbon steel (common for this grade), it offers good strength, though it may require plating (zinc, cadmium, or stainless steel) for outdoor or corrosive environments. Specialties often provides options for different coatings.

5. **Cost-Effective for Bulk or High-Volume Use** While individual bolts may not be the cheapest option, purchasing in bulk or from authorized distributors can reduce per-unit costs, making it economical for large-scale projects.

6. **Warranty and Reliability** Specialties Mfg. typically backs its products with warranties against defects, ensuring replacement if the bolt fails prematurely due to manufacturing issues.

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1. **Potential for Over-Tightening** Socket-head bolts require precise torque to avoid stripping the threads or deforming the head. Over-tightening can lead to damage, especially in softer materials like aluminum or plastic.

2. **Limited Thread Engagement** At 1/2" length, the bolt may not provide sufficient thread engagement in very thick or dense materials, risking loosening over time. Longer bolts (e.g., 3/4" or 1") might be needed for critical applications.

3. **Material Limitations** Standard carbon steel bolts may rust if exposed to moisture or chemicals. Unless specified otherwise, you ll need to source stainless steel or plated variants for outdoor or corrosive environments, which increases cost.

4. **Tool Dependency** Socket-head bolts require a socket wrench or impact driver, which may not be available in all toolkits. Flat-head or hex-head alternatives might be more convenient for quick fixes.

5. **Price Compared to Alternatives** While not excessively expensive, the DS-190539 may cost more than generic or aftermarket bolts, especially if purchased from specialty distributors. Generic 1/4-20 socket bolts from big-box stores could be a cheaper substitute for non-critical applications.

6. **Thread Stripping Risk** If the pre-drilled hole is undersized or misaligned, the coarse thread could strip the material, rendering the bolt unusable. Pre-drilling and pilot holes are essential for proper installation.

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### **Conclusion and Recommendation**

The **Specialties DS-190539 (1/4-20 1/2") coarse-thread socket-head bolt** is an excellent choice for **high-stress, structural, or industrial applications** where reliability and precision are critical. Its coarse threading provides superior holding power, and the socket design minimizes slippage during installation. However, it is not ideal for **light-duty, temporary, or corrosive environments** without additional protection (e.g., stainless steel or plating).

- You need a **durable, high-quality bolt** for machinery, automotive, or construction projects.

- The application requires **coarse threading** for better grip (e.g., connecting metal-to-metal or high-load joints).

- You can ensure **proper torque application** to avoid damage.

- You re purchasing in bulk or from an authorized distributor to balance cost and quality.

- You re working on a **low-stress project** where a cheaper generic bolt would suffice.

- The environment is **highly corrosive**, and you haven t specified a stainless or plated variant.

- You lack the right tools (socket wrench) for installation.

- The material thickness requires **longer thread engagement** (e.g., 3/4" or 1" bolts).

For most **professional or DIY mechanical applications**, the DS-190539 is a **strong, reliable choice** just ensure proper installation techniques and material compatibility. If cost is a major concern, compare it with **stainless steel or coated alternatives** from the same brand or trusted suppliers like McMaster-Carr or Grainger.

Details:

Manufacturer: Drag Specialties. Drag Specialties Coarse-Thread Socket-Head Bolts. Some images will show accessories or parts that are NOT included with this listing. Actual item may differ.

No knock offs or fakes here.

part #: ds190539 prices

• $16.15-$26.99

specifications fendeframat:

• brand: Drag Specialties
• mpn: Ds-190539
• part type: Socket Head Bolt
• disclaimer: Images Are A Representation Of The Item Only. Stock Photos.
• size: 1/4in.-20 X 1 1/2in.
• option: Knurled

shipping fendeframat:

• cost: $0.00
• service: Economy, USPS Priority Mail, USPS Priority Mail Express
• carrier: USPS
• class: Economy, Expedited
• type: Fixed
• transit: 4-8 Days

payments fendeframat:

• credit card: Discover
• other
• wallet: Apple-pay

returns fendeframat:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

general fendeframat:

• Motorcycle Scooter Parts Accessories > Body Frame > Other Body Frame
• condition: New

offer fendeframat:

• availability: In Stock
• options: Ship-to-home
• started: April 2, 2026
• sold: 0

seller fendeframat:

• city: Hudsonville, Michigan
• # reviews: 124274
• rating: 99.9%

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