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Home / Screws / 316 Stainless Steel Countersunk Hex Socket Screws, Flat Head Screws, Nuts, and Bolts M2 M3 M4 M5 M6 M8 M10 M12 M16

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Screws
Origin -
Material 316 Stainless Steel
Head Style Flat Head (Countersunk)
Drive Type Hex Socket (Allen)
Thread Standard Metric Coarse
Available Sizes M2, M3, M4, M5, M6, M8, M10, M12, M16
Finish Polished Silver
Corrosion Resistance High (Marine Grade)
Tensile Strength 700 MPa (Approx.)
Package Contents Screws, Nuts, and Washers Assortment
Application Marine, Chemical, and Outdoor Equipment

6 reviews

A

Anonymous

Mar 20, 2026

Rating: 4/5

Solid hardware kit

Very happy with the corrosion resistance. I used them on a patio furniture repair. One star off only because the plastic organizer box arrived slightly cracked, but the screws themselves were untouched and perfect.

A

Anonymous

Mar 17, 2026

Rating: 4/5

Good quality, mixed sizes

The material quality is excellent and feels very durable. I bought the assortment pack which was convenient, though I wish there were more M4 screws included compared to the larger sizes. Overall a solid purchase for general maintenance.

A

Anonymous

Mar 16, 2026

Rating: 5/5

Perfect for my boat project

These 316 stainless steel screws are exactly what I needed for repairing my dock. They haven't shown any signs of rust after three months in saltwater exposure. The hex socket heads are well-formed and didn't strip during installation.

A

Anonymous

Mar 16, 2026

Rating: 5/5

Clean threads and precise fit

Every single screw in the box had clean, sharp threads. The flat head sits perfectly flush with the surface. I used these for an outdoor garden structure and they look great while providing strong holding power.

A

Anonymous

Mar 15, 2026

Rating: 5/5

True 316 grade

I work in a chemical processing plant and we require genuine 316 steel for our equipment. These screws passed our internal spectroscopy test. Great value for the price compared to industrial suppliers.

A

Anonymous

Mar 05, 2026

Rating: 5/5

Excellent for DIY enthusiasts

Having a range of sizes from M2 to M16 in one kit is incredibly useful. The 316 steel ensures I don't have to worry about rust stains on my projects. Highly recommend for anyone doing outdoor DIY work.

5 FAQ

Q: Can these be used with aluminum materials without galvanic corrosion?

A: While 316 steel is less reactive than other steels, direct contact with aluminum in wet environments can still cause galvanic corrosion. We recommend using a dielectric barrier or coating if used together outdoors.

Q: What Allen key size do I need for the M6 screws?

A: For standard metric M6 hex socket screws, you will typically need a 5mm Allen key or bit.

Q: Does this set include matching nuts and washers for all sizes?

A: Yes, the assortment includes matching hex nuts and flat washers for every screw size listed in the product description.

Q: Are these screws suitable for underwater applications?

A: Yes, 316 stainless steel is marine-grade and offers excellent resistance to chlorides, making it suitable for submerged or splash-zone applications.

Q: What is the return policy if the sizes don't match my needs?

A: We offer a 30-day return window for unused items in their original packaging. Please contact our support team to initiate a return request.

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