Answering the need for reliable locking hardware, this guide highlights folding tab lock washers and compatible options that keep nuts and bolts from loosening under vibration. Designed for a variety of applications—from automotive to electronics—these picks are suited for DIY enthusiasts, hobbyists, and professionals seeking durable hardware. The selection below features five well-rounded products with clear usage context, so you can choose the best fit for your project.
Summary of chosen products
- Clutch Lock Washer Tab 90215-20223 – OEM Yamaha replacement, best for classic motorcycle maintenance.
- Vifmy Internal Tooth Star Lock Washers Assortment Kit (500 Pack) – best for wide projects needing multiple sizes.
- Sieqioor 530Pcs Spring Lock Washer Kit – best for mixed metric and SAE needs with robust material.
- 260pcs Black Starlock Internal Tooth – best for compact projects requiring a ready-made assortment.
- Biaungdo 50 Pcs Internal Tooth Washers – best for small, quick-fix assemblies with varied sizes.
The table below helps compare key attributes at a glance. All entries are non-price specific and focus on practical applicability.
| Product | Best For | Material | Variety | Notes |
|---|---|---|---|---|
| Clutch Lock Washer Tab | Motorcycle maintenance | OEM material | 1 size | Exact OEM fit |
| Vifmy 500Pcs Internal Tooth | General hardware projects | 304 Stainless Steel | 8 sizes | Wide assortment |
| Sieqioor 530Pcs | Industrial and DIY | 304 Stainless Steel | 12 sizes | Mix of metric & SAE |
| 260pcs Black Starlock | Compact kits | 65Mn Steel | 9 sizes | Storage box included |
| Biaungdo 50 Pcs | Small projects | 65Mn steel | 5 sizes | Easy to install |
Clutch Lock Washer Tab 90215-20223 for Yamaha Banshee & RZ350
Best for: Classic motorcycle maintenance and OEM replacement alignment. This Genuine OEM part is designed for Yamaha Banshee YFZ350 models (1987–2006) and RZ350 (1984–1985). The part number 90215-20223-00 ensures exact compatibility where a locking tab is needed to prevent loosening from vibration.
Why selected: It provides a precise OEM fit that sustains engine-mounted fastener integrity and reduces rattling or loosening in mid- to high-vibration environments.
Caution: Verify model compatibility to avoid incorrect fitment on non-listed models.
Vifmy Internal Tooth Star Lock Washers Assortment Kit (500 Pack)
Best for: Projects requiring multiple sizes across different fastener sets. The kit includes eight sizes (M2.5 to M12) with a total of 500 stainless steel washers, offering corrosion resistance and long service life.
Why selected: 304 stainless steel provides robust rust-resistance, making it suitable for indoor and outdoor use where vibration is common. It helps prevent loosening across diverse assemblies.
Caution: Check a few key sizes first to ensure the kit covers your most-used fastener ranges.
Sieqioor 530Pcs Spring Lock Washer Kit
Best for: Mixed metric and SAE applications in DIY and professional contexts. The set covers a wide selection of sizes and includes grab-and-go washers for rapid project setup.
Why selected: 304 stainless steel construction yields excellent corrosion resistance, and the split-lock design counters vibration-induced loosening with consistent clamping force.
Caution: The large kit size may be more than needed for small projects; consider a smaller subset if you work on limited fasteners.
260pcs Black Starlock Internal Tooth Assortment
Best for: Handy assortment for small to medium projects requiring ready-to-use internal tooth locking washers. The 260-piece kit includes several sizes for flexible use.
Why selected: 65Mn steel builds a strong, durable washer with a matte black finish for corrosion resistance and a discrete appearance in concealed assemblies.
Caution: This kit may be insufficient for heavy industrial applications demanding very large sizes or high-load locking washers.
Biaungdo 50 Pcs Internal Tooth Washers
Best for: Small, quick-fix assemblies with varied sizes in a compact kit. This set includes multiple metric sizes (M2 to M5) in 50 pieces total.
Why selected: The 65Mn steel construction provides affordability with adequate hand-tool usability for everyday tasks. It is suitable for light-duty applications where space and cost matter.
Caution: Not ideal for high-stress or outdoor environments where larger sizes or superior corrosion resistance are needed.
Buying Guide: Key Considerations for Folding Tab Lock Washers
- Material and corrosion resistance: For outdoor or humid environments, choose 304 stainless steel or higher to minimize rust and ensure longevity.
- Size range: Match the washer sizes to your fasteners. Large assortments help cover more project types, but a focused set can save time.
- Locking mechanism: Decide between internal tooth star locks and split (spring) lock washers. Internal tooth varieties resist loosening differently than split types depending on the application.
- Finish and appearance: If you need a discreet look, consider black oxide or dark finishes, especially for visible assemblies.
- Pack size and storage: Larger kits are cost-effective for shops with many projects, while smaller kits suit home use with limited needs.
Practical Buyer Questions
- What is the main benefit of a star locking washer? It provides additional surface bite to prevent loosening under vibration and load shifts.
- When should I choose stainless steel over carbon steel? Stainless steel offers superior corrosion resistance, suitable for outdoor or moisture-prone environments; carbon steel is often cheaper for indoor, dry use.
- Are internal tooth and split lock washers interchangeable? Not always. Internal tooth washers engage differently with bolt heads or nuts, so pick based on your hardware design.
- How many sizes should I buy? Start with a core set that covers your most common fastener sizes, then add larger kits if you work across many projects.
- Is a storage box important? Yes—keeping washers organized speeds up assembly and prevents misplacement during work.
- Do these washers affect torque specifications? Lock washers can influence clamp pressure; follow fastener torque guidelines for your specific application.
FAQ
- Are these washers compatible with metric and SAE fasteners? Yes, several kits provide both metric and SAE sizes for versatility.
- Can I use lock washers for outdoor equipment? Yes, especially stainless steel options; verify corrosion resistance for long-term exposure.
- What is the difference between star lock and spring lock washers? Star lock washers have teeth that grip surfaces, while spring lock washers rely on a split design to apply continuous tension.
- Do kits come with a storage solution? Many do, including storage boxes or organizers to keep sizes separated.
- How do I determine the correct size? Measure the bolt diameter and thread pitch to match washer inner diameter and compatibility.
- Is there a risk of over-tightening with lock washers? Lock washers help resist loosening, but proper torque according to fastener guidelines remains essential.