Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	Alloy Steel
Strength Grade	12.9
Head Style	Countersunk Flat Head
Drive Type	Hex Socket
Surface Finish	Black Oxide
Thread Standard	Metric Coarse
Kit Includes	Screws, Nuts, Washers
Hardness	HRC 39-44
Tensile Strength	1220 MPa
Size Range	M3 to M10

5 reviews

Anonymous

Mar 08, 2026

Rating: 4/5

Good value set

Missing one washer but otherwise excellent quality for the price. Would buy again.

Anonymous

Feb 20, 2026

Rating: 5/5

Perfect for machinery

Used them on my lathe modifications. The 12.9 grade is legitimate and they did not strip.

Anonymous

Feb 14, 2026

Rating: 5/5

High strength confirmed

Didn't strip under high torque. Very satisfied with the hardness and finish quality.

Anonymous

Jan 31, 2026

Rating: 5/5

Professional Grade Quality

These screws are incredibly strong and held up well under high torque during my machinery assembly.

Anonymous

Jan 26, 2026

Rating: 4/5

Great assortment

Good variety of sizes for most projects. One container was slightly cracked on arrival but contents were safe.

5 FAQ

Q: Do the nuts match the screw grades?

A: Yes, the included nuts are Grade 12 compatible to ensure matching strength.

Q: Is an Allen key included in the box?

A: No, the set includes fasteners only. Tools are sold separately.

Q: Are these suitable for outdoor use?

A: They have black oxide coating, but we recommend additional protection for harsh outdoor environments.

Q: Are these made of stainless steel?

A: No, these are made of high-strength alloy steel with a black oxide finish.

Q: What sizes are included in this set?

A: The assortment includes popular metric sizes ranging from M3 to M10.

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