Diall M4 Screw Cup Washer - Pack Of 25
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B&QB&Q - M4 Carbon Steel Screw Cup Washer(Dia)4mmPack Of 25
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Product Information
Full details
This guide is for DIY enthusiasts and builders needing secure M4 fastenings. The Diall M4 Screw Cup Washer pack offers a durable, carbon steel solution for various projects, ensuring a stable connection. The primary caveat is their specific M4 size, limiting compatibility to M4 screws.
All features
| Brand | Diall |
|---|
Extended Product Information
FAQs
What size screws are these washers for?
These washers are specifically designed for M4 screws and bolts.
What material are the washers made of?
They are constructed from durable carbon steel.
How many washers are in a pack?
Each pack contains 25 screw cup washers.
Can I use these for outdoor projects?
While durable, carbon steel can be susceptible to rust in wet or humid conditions. For outdoor use, consider applying a rust inhibitor or using stainless steel alternatives if long-term corrosion resistance is critical.
What is the purpose of the 'cup' design?
The cup design provides a wider bearing surface. This helps to distribute the force from the screw head more evenly across the material, preventing damage and increasing holding power.
Are these washers magnetic?
Yes, carbon steel is a ferrous material and is typically magnetic.
Troubleshooting
Washer does not fit on screw
Ensure you are using an M4 screw. These washers are specifically designed for M4 (4mm diameter) screws.
Screw spins freely after tightening
The washer distributes pressure but does not provide thread-locking. Ensure the mating thread or hole is adequate. For added security, consider using a thread-locking compound or a nut if appropriate.
Rust spots appear on the washer
Carbon steel can rust if exposed to moisture. Wipe the washer dry immediately. For long-term storage, keep in a dry place. If rust is significant, consider replacing the washer.
Pros and Cons
Pros
- Durable construction from carbon steel.
- Comes in a convenient pack of 25.
- Specifically designed for M4 screws, ensuring a proper fit.
- Wide cup design helps prevent damage to surfaces.
Cons
- Limited to M4 screw sizes.
- May not be suitable for heavy-duty industrial applications.
- No anti-corrosion coating mentioned, potential for rust in wet environments.
Setup, Compatibility & Care
Setup:
These washers are designed to be used in conjunction with M4 screws or bolts. Simply place the washer onto the screw thread before inserting it into the material. The cup side of the washer should face the surface of the material being fastened.
Compatibility:
- Screw Size: Exclusively compatible with M4 screws and bolts.
- Material: Suitable for use with wood, plastic, metal, and composite materials.
Care:
To maintain the integrity and appearance of the carbon steel washers, it is recommended to store them in a dry environment. Avoid prolonged exposure to moisture to prevent potential rusting.