Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	Carbon Steel
Head Style	Countersunk Flat Head
Drive Type	Phillips (PH2)
Thread Design	Coarse Thread
Surface Treatment	Black Phosphate
Screw Length	25mm (1 Inch)
Screw Diameter	3.5mm
Package Quantity	1000 Pieces
Manufacturing Standard	GB/T 14210
Recommended Application	Gypsum Board to Wood Studs

5 reviews

Anonymous

Mar 29, 2026

Rating: 4/5

Good strength

Holds well but packaging was slightly damaged upon arrival. Screws were fine.

Anonymous

Mar 13, 2026

Rating: 5/5

Contractor approved

I use these for all my drywall jobs. Consistent quality and good head design.

Anonymous

Mar 10, 2026

Rating: 5/5

Excellent bulk value

Perfect for my basement finish project. The screws drove in smoothly without stripping.

Anonymous

Feb 18, 2026

Rating: 5/5

Sharp tips

Self-tapping feature works great on soft wood studs. Saved me time pre-drilling.

Anonymous

Feb 12, 2026

Rating: 3/5

Mixed batch

Some screws had inconsistent heads which caused slipping with the drill bit.

5 FAQ

Q: What bit size is required?

A: Requires a standard PH2 Phillips head bit for optimal torque and fit.

Q: Does the coating prevent rust?

A: Black phosphate provides basic corrosion resistance suitable for indoor drywall applications.

Q: Is there a warranty included?

A: Yes, standard 30-day manufacturer warranty against defects is included.

Q: How much does the box weigh?

A: The bulk pack weighs approximately 2.5 kilograms including packaging.

Q: Are these suitable for metal studs?

A: These are designed primarily for wood studs. For metal studs, please use fine-thread screws.

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