What materials are used for these screws?

The screws are made of Carbon Steel with a black coarse/fine phosphated finish.

Very Nice Free Sample Black Coarse /Fine Phosphated Bugle Head Self-Tapping Drywall Screw

Name: Very Nice Free Sample Black Coarse /Fine Phosphated Bugle Head Self-Tapping Drywall Screw
Brand: Hebei Yunchang Fastener Manufacturing Co., Ltd.
SKU: 2087298392

Hebei, ChinaHebei Yunchang Fastener Manufacturing Co., Ltd.

US$0.02

1,000-2,999 Pieces

US$0.01

3,000+ Pieces

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Round Head

Model NO.

DIN

Groove

Flat

Connection

Screw

Head Style

Round

Standard

DIN, GB, ANSI, BSW, JIS, GOST

Grade

4.8

MOQ

1000PCS

Delivery Time

15-30 Days

Payment Term

Tt 30% Deposit

Model Number

Custom

Size

M3-M12,Custom

Transport Package

Bag or Caton

Specification

25*25*15

Trademark

Yun Chang

Origin

Hebei

Key features

Customizable Specifications: Available in M3-M12 sizes with custom model numbers and tolerance adherence to drawings.

High Precision Manufacturing: Strict adherence to ISO9001:2008 with 100% finished product inspection for quality assurance.

Flexible OEM/ODM Service: Supports full customization from samples, designs, or minor adjustments with professional advice.

Robust Production Capacity: Annual output exceeds 150,000 tons with advanced heat treatment and surface treatment lines.

Diverse Standard Compliance: Meets DIN, GB, ANSI, BSW, JIS, and GOST standards for global compatibility.

Professional R&D Support: Over 40 technical personnel dedicated to innovation and new model development monthly.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export Experience

Hebei Yunchang Fastener Manufacturing Co., Ltd.

Hebei, China

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 22 Years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤6.36h

About Our Factory & Business Background

AddressSouthwest Industrial Zone, Lu Chan Street and Northeast Side of Construction Street, Yongnian District, Handan City, Hebei Province

Plant Area52307 square meters

Number of Employees239

Registered Capital50,180,000 RMB

Terms of PaymentLC, T/T, D/P, PayPal, Western Union, Small-amount payment

International Commercial Terms(Incoterms)FOB, CIF, CFR, EXW

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

Minimum Order Quantity1 Ton

Supply Chain Partners3

Our Production Capability & Technical Expertise

Main ProductsFoundation Bolt, Steel Structure Bolt, Shear Bolts, Hex Bolt, Hex Nut, Flange Bolt, Flange Nut, Full-thread Studs, Full-thread Studs

Production Lines3

Production MachinesNuts Cold Header, Bolts Cold Header, Purface Treatment Machine Equipment, Purface Treatment Machine Equipment, Cutting Machine, Lathe, Threading Machine, Surface Treatment Tank, Surface Painting Production Line, Sand Blasting Machine, hot-forging machine, CNC Machining Center, hot-forging machine, Punching Machine, Packing Machine, Nuts Threading Machine

QA/QC inspectors11 people

Inspection Type for Finished Products100% inspection(Function inspection & Visual inspection)

Inspection Method for Finished ProductsHave instructions and uniformly followed

R&D Engineers5 people

Traceability of Raw MaterialsYes