Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Screws
Origin	-
Material	304 Stainless Steel
Standard	GB29.2 / DIN 6921
Head Style	External Hex with Cross Recess
Drive Type	Hex Socket and Phillips Cross
Thread Size Options	M3, M4, M5, M6
Surface Finish	Plain (Unplated)
Corrosion Resistance	High (Suitable for damp environments)
Application	Machinery, Automotive, Electronics Assembly
Package Contents	Assorted Kit (100 pieces per size)
Country of Origin	China

6 reviews

Anonymous

Mar 26, 2026

Rating: 5/5

Reliable and shiny

The finish is smooth and consistent across all pieces. No burrs on the threads. Highly recommend for anyone needing reliable metric screws.

Anonymous

Mar 24, 2026

Rating: 4/5

Good quality, accurate sizing

Ordered the M4 and M5 sizes. Threads are clean and fit perfectly into standard nuts. One star off only because the packaging was a bit loose, but the product itself is great.

Anonymous

Mar 17, 2026

Rating: 5/5

Perfect dual-drive design

These bolts are exactly what I needed for my project. The combination of the hex head and the cross recess allows for versatile installation options. The 304 stainless steel feels very durable.

Anonymous

Mar 12, 2026

Rating: 4/5

Solid industrial fasteners

Used these in a small manufacturing repair. They meet the GB29.2 standard as described. Very satisfied with the tensile strength.

Anonymous

Mar 11, 2026

Rating: 5/5

Excellent for outdoor use

Using these for a garden trellis assembly. Since they are 304 stainless, I don't have to worry about rust. The hex head provides good torque leverage.

Anonymous

Mar 02, 2026

Rating: 5/5

Great value kit

Having multiple sizes in one order saved me time. The cross recess is deep enough to hold the screwdriver bit securely without stripping.

5 FAQ

Q: Does the cross recess strip easily under high torque?

A: The cross recess is designed for precision tightening. For high-torque applications, we recommend using the external hex drive to prevent stripping.

Q: What is the length of the bolts in this kit?

A: This specific listing covers various diameters (M3-M6). Please select the specific length variation you need from the dropdown menu before ordering, as lengths vary by SKU.

Q: Is a certificate of material compliance included?

A: Bulk orders over 50kg usually include a mill certificate. For smaller retail kits, the material specification is guaranteed per our product description standards.

Q: Can these be used in saltwater environments?

A: While 304 Stainless Steel offers good corrosion resistance, for constant submersion in saltwater, we typically recommend 316 Stainless Steel for superior protection.

Q: Are these bolts compatible with metric nuts?

A: Yes, these bolts feature standard metric threading (M3-M6) and are fully compatible with corresponding metric nuts and washers.

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