What certifications do the screws have?

The screws are CE certified and manufactured under strict quality control to meet international industry standards.

What are the available sizes?

We supply diameters of 3.5mm and 4.2mm, with lengths ranging from 16mm to 120mm in various combinations.

Self-Tapping Drywall Screws for Wall Panels with CE Certification (4X55mm, Sharp Point)

Name: Self-Tapping Drywall Screws for Wall Panels with CE Certification (4X55mm, Sharp Point)
Brand: Handan Chang Lan Fastener Manufacturing Co., Ltd.
SKU: 2161321012

Hebei, ChinaHandan Chang Lan Fastener Manufacturing Co., Ltd.

US$0.10

1,000 Tons

Product specifications

M3.5

Sample price:US$5.00/kg.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Round Head

Model NO.

4x55mm

Groove

Cross

Connection

Other

Head Style

Flat

Standard

Grade

4.8

Thread Type

Fine Thread

Thread Design

Single Thread

Surface Treatment

Zinc Plated

Executive Standard

DIN

Feature

Self Tapping

Transport Package

Bag

Specification

DIY

Trademark

Changlan

Origin

China

Key features

High Strength Material: Made of premium C1022 carbon steel with integral quenching for high hardness and toughness.

Smooth Sink Design: Bugle countersunk head with 90-degree cone structure prevents wall bulging and surface damage.

Anti-Slip Cross Recess: Precise cross recess ensures tight fitting with bits, preventing slipping and improving efficiency.

Dual Thread Options: Coarse thread for wood substrates; fine double thread for light steel keels and metal profiles.

Corrosion Resistance: Multiple treatments available: black phosphating, zinc plating, and hot dip galvanizing.

No Pre-Drilling Needed: Excellent self-tapping performance simplifies construction and saves labor costs.

Wide Size Range: Diameters 3.5mm/4.2mm; lengths from 16mm to 120mm with regular sizes in stock.

CE Certified Quality: Meets international standards with strict quality control for residential and commercial use.

Company profile

Importers and ExportersHigh Repeat Buyers ChoicePatents AwardedProduct Certification

Handan Chang Lan Fastener Manufacturing Co., Ltd.

Hebei, China

Business Type: Manufacturer/Factory, Trading CompanyAverage Response Time: ≤1.02hTerms of Payment: Western Union, PayPal, D/P, etc.International Commercial Terms(Incoterms): FOB, DAP, EXW, CIP, CPT, CFR, CIF, Others, FCA, DAT

About Our Factory & Business Background

AddressLin Ming Guan Zhen Bei Shi Kou Cun Dong, Yongnian District, Handan, Hebei, China

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Our Production Capability & Technical Expertise

Main ProductsScrew, Bolt, Nut, Anchor Bolt, Flat Washer, Expansion Bolt, Threaded Rod, High-Strength Bolt, Self-Drilling Screw, Drywall Screw

Our Industry Experience & Global Business Record

Main MarketsNorth America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe

Product Q&A

Q:What material are the drywall screws made of?

They are made of premium C1022 carbon steel, treated with integral quenching to ensure high hardness and good toughness.

Q:What surface treatments are available?

Options include black phosphating, blue-white zinc plating, yellow zinc plating, and hot dip galvanizing for enhanced corrosion resistance.

Q:Can I customize the screw specifications?

Yes, customized specifications are acceptable, although regular sizes from 16mm to 120mm are kept in stock for immediate delivery.

Q:What is the difference between coarse and fine threads?

Coarse threads provide strong gripping force for wood substrates, while fine double threads offer fast tapping speed for light steel keels and thin metal profiles.

Q:Do these screws require pre-drilling?

No, they feature excellent self-tapping performance, so no pre-drilling is required, which simplifies construction and saves labor.