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Home / Screws / 304 Stainless Steel Cross Rounding Head Screw and Nut Set, Umbrella Head Flat Bolt, Round Head with Flat and Spring Washers

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Screws
Origin -
Material 304 Stainless Steel
Head Style Cross Rounding (Umbrella) Head
Drive Type Phillips (Cross)
Included Components Screws, Nuts, Flat Washers, Spring Washers
Finish Polished Silver
Corrosion Resistance High (Suitable for Outdoor Use)
Thread Type Metric Coarse Thread
Application Furniture Assembly, Machinery, DIY Projects
Package Weight 250 grams
Country of Origin China

6 reviews

A

Anonymous

Mar 24, 2026

Rating: 4/5

Good value set

Great assortment for general repairs. The cross head grips well with a standard screwdriver. I deducted one star only because the box was slightly dented on arrival, but the contents were fine.

A

Anonymous

Mar 16, 2026

Rating: 4/5

Solid hardware kit

Everything fits together well. The nuts thread smoothly onto the bolts. Would have given 5 stars if there were a few more spring washers included in the count.

A

Anonymous

Mar 14, 2026

Rating: 5/5

Reliable for outdoor use

Installed these on a garden trellis three months ago and there is absolutely no sign of rust. The rounding head sheds water nicely. Highly recommended for exterior projects.

A

Anonymous

Mar 09, 2026

Rating: 5/5

Shiny and strong

The polished finish looks professional. I used them on a visible part of a custom cabinet and they blend in nicely. No stripping issues during installation.

A

Anonymous

Mar 04, 2026

Rating: 5/5

Excellent quality stainless steel

These screws are exactly what I needed for my outdoor deck project. The 304 stainless steel feels very durable and the umbrella head looks sleek. The included washers fit perfectly.

A

Anonymous

Mar 04, 2026

Rating: 5/5

Perfect for furniture assembly

Used these to assemble a new workbench. The flat and spring washers prevent loosening over time. Very happy with the corrosion resistance as I work in a humid garage.

5 FAQ

Q: Are these screws suitable for marine environments?

A: Yes, 304 stainless steel offers excellent corrosion resistance and is commonly used in marine applications, though 316 grade is preferred for direct saltwater immersion.

Q: Is the spring washer necessary for indoor furniture?

A: While not strictly necessary for static indoor loads, the spring washer helps maintain tension and prevents the nut from loosening due to vibration or wood expansion/contraction.

Q: Do I need a special tool to install the umbrella heads?

A: No, these feature a standard Phillips (cross) drive, so any regular Phillips head screwdriver or bit will work perfectly.

Q: Can these be painted over if I want a different color?

A: Yes, you can paint them, but we recommend lightly sanding the surface and using a primer designed for metal to ensure the paint adheres properly to the stainless steel.

Q: What sizes are included in this set?

A: This specific listing contains M6 x 20mm screws. Please check the variant selector if you require different lengths or diameters.

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