fits make: Yamaha.

( Manufacturer Part Number: 90164-05M00-00 ), ( Part Type: Screw )
The **Yamaha KWR1338 (Part Number: 90164-05M00-00) Tapping Screw** is a precision-engineered fastener designed to deliver exceptional performance in demanding applications where reliability and durability are paramount. This high-quality screw is crafted from **high-strength steel**, ensuring superior resistance to wear, corrosion, and fatigue over extended periods of use. The **tapping thread design** allows it to cut its own threads into pre-drilled holes, eliminating the need for pre-tapped holes and simplifying installation in a variety of materials, including metal, plastic, and composite substrates. The screw features a **fine-pitch thread**, which enhances its holding power and reduces the risk of loosening under vibration or dynamic loads, making it ideal for automotive, industrial machinery, and electronic assembly applications where stability is critical.
The **hex head** of the tapping screw is precision-machined for a secure grip, allowing for easy installation with standard socket wrenches or impact drivers while minimizing the risk of cam-out where the tool slips off the screw head during tightening. The **flat, non-marring surface** of the head prevents damage to delicate components or painted surfaces, ensuring a clean and professional finish. Additionally, the screw is treated with a **protective coating**, such as zinc or black oxide, to further enhance its resistance to rust and environmental degradation, extending its service life in harsh conditions. Whether used in engine mounts, chassis reinforcements, or precision instrumentation, this tapping screw delivers consistent, repeatable performance with minimal maintenance, making it a trusted choice for professionals who demand excellence in their fasteners. Its compatibility with Yamaha s high-performance systems ensures seamless integration and long-term reliability in critical applications.
The Yamaha KWR1338 is a popular 12-string acoustic guitar, and the specific model number **Yamaha 90164-05M00-00** (a tapping screw model) is a solid choice for players seeking a reliable, versatile instrument. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.
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### **Pros of the Yamaha KWR1338 (Tapping Screw Model)**
1. **Superior Sound Quality**
The KWR1338 is renowned for its rich, balanced tone, with a warm bass response and clear highs. The scalloped bracing and Sitka spruce top enhance sustain and resonance, making it ideal for fingerstyle, strumming, and 12-string playing. Many players appreciate its ability to handle both soft and aggressive playing styles.
2. **Versatility**
As a 12-string, it offers a unique texture and depth that complements genres like folk, pop, rock, and indie. The double courses (two strings per fret) create a fuller, more complex sound compared to a 6-string, which can be advantageous for songwriting and live performances.
3. **Build Quality and Craftsmanship**
Yamaha is known for its attention to detail, and the KWR1338 is no exception. The solid Sitka spruce top and mahogany back and sides provide a sturdy yet resonant frame. The tapping screw design (instead of glue) allows for easier repairs or adjustments if needed, which can be a practical advantage over the lifetime of the guitar.
4. **Playability**
The guitar features a slim neck profile and a comfortable neck shape, making it accessible for players with smaller hands or those who prefer a lighter touch. The nut width is slightly wider than a standard 6-string, which can feel unusual at first but adapts quickly.
5. **Durability**
The construction is robust, with a solid wood body and a sturdy neck joint. The tapping screw design also contributes to longevity, as it reduces the risk of delamination over time.
6. **Value for Money**
Compared to other high-end 12-string guitars, the KWR1338 offers excellent value. It competes favorably with guitars costing significantly more while maintaining professional-grade quality.
7. **Aesthetic Appeal**
The guitar has a classic, timeless design with a natural finish that many players find visually pleasing. The attention to detail in the inlays and finish adds to its premium feel.
8. **Comfortable Neck Length**
The scale length is slightly shorter than a standard 6-string (25.5 inches vs. 25.5" for 6-strings, but the 12-string s double courses can feel slightly different), which can be more forgiving for beginners or players with shorter fingers.
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### **Cons of the Yamaha KWR1338 (Tapping Screw Model)**
1. **Tonewood Limitations**
While the Sitka spruce top is excellent for versatility, some players may find it lacks the warmth or complexity of guitars with rosewood or mahogany tops. If you prefer a guitar with a more "vintage" or "warm" tone, you might need to consider alternatives.
2. **Action and Setup Sensitivity**
The 12-string s double courses can make the action (string height) feel slightly higher than a 6-string, which may require more frequent setup adjustments. Players with lower action preferences might need to invest time in optimizing the setup.
3. **Weight**
The KWR1338 is heavier than many 6-string guitars due to its solid wood construction and 12-string configuration. This can be tiring for long sessions or live performances, though it also contributes to its sustain and resonance.
4. **String Gauge and Tension**
The thicker strings of a 12-string increase tension, which can lead to faster wear on the frets and nut. Players may need to replace strings more frequently than they would with a 6-string, adding to maintenance costs.
5. **Learning Curve for 12-String Playing**
Transitioning from a 6-string to a 12-string requires adjusting to the double courses and the increased string count. Some chords and techniques (e.g., barre chords) may feel less stable initially, though this is a minor inconvenience for most players.
6. **Limited Customization**
The guitar comes with a standard finish and hardware configuration. If you prefer unique colors, pickups, or electronics, you ll need to modify it yourself or buy a custom-built guitar.
7. **Potential for Feedback**
While rare, the 12-string s volume and resonance can sometimes lead to feedback in certain playing styles or environments, particularly if using an amplifier with poor feedback control.
8. **Price Relative to Alternatives**
While the KWR1338 is affordable for a professional-grade 12-string, it may still be outside the budget of beginners or players who prioritize other features (e.g., electronics, different tonewoods).
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### **Conclusion**
The Yamaha KWR1338 (tapping screw model) is a well-rounded, high-quality 12-string acoustic guitar that excels in sound, versatility, and durability. Its pros superior tone, craftsmanship, playability, and value make it an excellent choice for players who prioritize these aspects. The cons, while minor, include the guitar s weight, the need for occasional setup adjustments, and the learning curve associated with 12-string playing.
For most players especially those who enjoy folk, indie, or strumming-based genres the KWR1338 delivers an outstanding experience without the premium price tag of higher-end models. It is particularly well-suited for intermediate to advanced players who want a reliable, versatile instrument for both practice and performance.
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### **Recommendation**
**Buy the Yamaha KWR1338 if:**- You want a high-quality 12-string with a balanced, versatile tone.
- You prioritize durability, playability, and professional-grade construction.
- You re willing to invest in occasional setups and string replacements for optimal performance.
- You enjoy genres that benefit from the unique texture of a 12-string (folk, pop, indie, etc.).
- You appreciate Yamaha s reputation for reliability and value.
**Consider alternatives if:**- You prefer a warmer, more complex tone and are willing to pay for tonewoods like rosewood or mahogany (e.g., Taylor 314ce, Martin 000-12).
- You need built-in electronics or a different body style (e.g., dreadnought for louder projection).
- You re a beginner who may not yet be committed to the 12-string format (a 6-string or a cheaper 12-string like the Yamaha FG830 might be a better starting point).
Overall, the Yamaha KWR1338 is a fantastic guitar for players who want a reliable, high-performing 12-string without breaking the bank. It s a tool that will serve you well for years, provided you maintain it properly.
THIS IS PART NUMBER KWR1338 IN MY INVENTORY. I HAVE 1000S OF PARTS SO IF THIS IS NOT THE PART YOU ARE LOOKING FOR OR UNSURE FEEL FREE TO SEND ME A MESSAGE. LOT OF 6, YAMAHA TAPPING SCREW, 90164-05M00- NEW/NEVER USED. I ONLY SHIP IN THE LOWER 48 FOR FEE ASSOCIATED WITH THIS LISTING IF PART OF USA.