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Home / Screws / 304/316 Stainless Steel Cross Large Flat Head Screw, Nut, and Spring Washer Set M2 M2.5 M3 M4 M5 M6 M8

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Screws
Origin -
Material Grade 304 and 316 Stainless Steel
Head Style Large Flat Head (Countersunk)
Drive Type Cross Phillips
Included Sizes M2, M2.5, M3, M4, M5, M6, M8
Components Included Screws, Nuts, and Spring Washers
Finish Polished Silver
Corrosion Resistance High (Suitable for Outdoor Use)
Thread Type Metric Coarse Thread
Packaging Compartmentalized Plastic Case
Application General Machinery, Electronics, and DIY Projects

6 reviews

A

Anonymous

Mar 23, 2026

Rating: 5/5

Perfect for marine projects

I used the 316 stainless steel components for a small boat repair. They have held up beautifully against saltwater exposure so far. The spring washers provide excellent tension.

A

Anonymous

Mar 20, 2026

Rating: 5/5

Excellent variety pack for my workshop

This set has everything I needed for various repairs around the house. The distinction between 304 and 316 steel is clear, and the case keeps everything organized. Highly recommended for any DIY enthusiast.

A

Anonymous

Mar 11, 2026

Rating: 4/5

Solid hardware set

Great assortment of sizes. The metal feels durable and high quality. One of the M6 washers was slightly bent upon arrival, but the rest of the set was perfect.

A

Anonymous

Mar 10, 2026

Rating: 5/5

Best seller for a reason

Arrived quickly and exactly as described. Having both nuts and washers included makes this a complete solution for assembly tasks. Will definitely buy again when I run out.

A

Anonymous

Mar 05, 2026

Rating: 5/5

Well organized kit

The plastic case is sturdy and the compartments are labeled well. It saves me so much time not having to dig through mixed bins. The flat head design sits flush as expected.

A

Anonymous

Mar 05, 2026

Rating: 4/5

Good quality, fast shipping

The screws are solid and the heads fit my screwdriver perfectly without stripping. I only wished there were slightly more M3 nuts in the box, but overall a great value for the price.

5 FAQ

Q: What is the thread pitch for the M4 screws?

A: The M4 screws in this set feature a standard metric coarse thread pitch of 0.7mm.

Q: Are all sizes available in both 304 and 316 steel?

A: The set includes a mix of both grades. Typically, smaller sizes like M2 and M2.5 are 304, while larger sizes intended for outdoor use like M6 and M8 are 316. Please check the individual compartment labels for specific grade identification.

Q: Does this kit come with a screwdriver?

A: No, this package contains only the screws, nuts, and spring washers. Tools are not included.

Q: Can these be used for aluminum framing?

A: Yes, these stainless steel fasteners are compatible with aluminum framing. However, we recommend using an anti-seize compound to prevent galvanic corrosion between the dissimilar metals over long periods.

Q: Is the storage case stackable?

A: The current design of the compartmentalized case does not feature stacking latches, but the flat shape allows them to be stacked neatly on a shelf.

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