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Home / Screws / 304 Stainless Steel Socket Head Cap Screw Hex Bolt Nut Washer Set Grade 12.9 Cylinder Head Assortment Box

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Screws
Origin -
Material 304 Stainless Steel
Head Style Socket Head Cap (Cylinder)
Drive Type Internal Hexagon
Grade Rating Grade 12.9 Equivalent Strength
Finish Polished Silver
Corrosion Resistance High (Rust Resistant)
Package Type Compartmentalized Assortment Box
Included Components Bolts, Nuts, and Washers
Thread Type Metric Coarse Thread
Application Machinery, Automotive, and DIY Projects

6 reviews

A

Anonymous

Mar 30, 2026

Rating: 5/5

Perfect for automotive repairs

Needed specific sizes for an engine cover replacement. These held up well under torque and show no signs of rust after a few months.

A

Anonymous

Mar 29, 2026

Rating: 5/5

Excellent quality assortment

The stainless steel finish is top-notch and the box organization makes finding the right size very easy. Great value for the price.

A

Anonymous

Mar 27, 2026

Rating: 4/5

Good variety, sturdy box

I use these for my workshop projects. The heads fit my hex keys perfectly. One compartment was slightly loose, but overall a solid purchase.

A

Anonymous

Mar 22, 2026

Rating: 4/5

Solid hardware set

The threads are clean and cut precisely. I deducted one star because I wished there were more of the smaller sizes included.

A

Anonymous

Mar 18, 2026

Rating: 5/5

Highly recommended

Very professional looking bolts. The internal hex drive is deep enough to prevent stripping. Will buy again when I run out.

A

Anonymous

Mar 06, 2026

Rating: 5/5

Great for DIY enthusiasts

Having nuts and washers included in the set saved me a trip to the hardware store. The metal feels durable and high-quality.

5 FAQ

Q: Does this set include an Allen key?

A: No, this assortment box contains only the bolts, nuts, and washers. Tools are not included.

Q: Are these bolts suitable for outdoor use?

A: Yes, since they are made from 304 Stainless Steel, they offer excellent corrosion resistance and are suitable for outdoor environments.

Q: Are the threads metric or imperial?

A: This specific assortment features standard Metric coarse threads. Please check the product label for specific size ranges.

Q: What is the tensile strength of Grade 12.9?

A: Grade 12.9 indicates a minimum tensile strength of 1200 MPa, making these suitable for high-stress applications.

Q: Can I return the set if the sizes don't match my needs?

A: Absolutely. We offer a 30-day return policy for unused items in their original packaging.

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