What shipping methods do you offer?

We usually ship by sea, air, or international express, and can provide reasonable solutions based on your transportation requirements.

What materials and finishes are available?

Materials include Carbon Steel C1022A and SS410. Finishes include zinc plated, ruspert, baking paint, and epoxy plating.

What are the main applications for these screws?

They are used for roofing connections, quick self-tapping screws for metal, and metal-to-metal or metal-to-wood connections.

Hex Head Double Thread Black Polycarbonate Washer Dome Washer Roofing Screw with Wing

Name: Hex Head Double Thread Black Polycarbonate Washer Dome Washer Roofing Screw with Wing
Brand: Tianjin Primo Technology Co., Ltd.
SKU: 1967021761

Tianjin, ChinaTianjin Primo Technology Co., Ltd.

US$1,200.00

1-9 Tons

US$1,150.00

10-24 Tons

US$1,100.00

25+ Tons

Sample price:US$13.92/kg.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Self Drilling

Model NO.

Self drilling screw-3

Groove

Hex Washer Head, Hex Flange Head

Connection

Roofing Connect

Head Style

Hex Washer Head

Standard

DIN, GB, GOST

Grade

12.9

Thread

Fine or Coarse Thread, Double, a, B

Finish

Zinc or Ruspert Coating

MOQ

1 Ton Each Size

Application

Roofing Connection

Washer

EPDM Bounded Washer

Certificate

ISO, GS, RoHS, CE, Cma

Length

12-200mm

Usage

Building, Construction, Build Roofing, Wood Timber

Transport Package

Bulk in Bag or Box Package

Specification

#8, #10, #12, #14,

Trademark

Primo

Origin

China

HS Code

7318140090

Production Capacity

10000 T/ Year

Key features

Self Drilling Design: Drill-bit-shaped tip allows use without pilot holes, saving time on metal-to-metal or metal-to-wood connections.

EPDM Bounded Washer: Includes EPDM bounded washer for secure roofing connection and weatherproofing.

High Strength Grade: Made from Carbon Steel C1022A/SS410 with Grade 12.9 for superior durability.

Customizable Options: Offers customized thread (Fine/Coarse/Double), finish (Zinc/Ruspert), and packaging.

Wide Size Range: Available in thicknesses 4.2-6.3mm and lengths 12-200mm to fit various applications.

Certified Quality: Products certified with ISO, GS, RoHS, CE, and Cma standards.

Fast Delivery: Delivery time of 20-30 days, with peak season lead time of 1-3 months.

One-Stop Manufacturer: Integrated fastener manufacturer with 20,000 tons annual capacity and 200+ production sets.

Company profile

Tianjin Primo Technology Co., Ltd.

Tianjin, China

Business Type: Manufacturer/Factory, Trading CompanyAverage Response Time: ≤10.40h

About Our Factory & Business Background

AddressTianjin, China

Average Lead TimePeak Season Lead Time: 1-3 months Off Season Lead Time: one month

Our Production Capability & Technical Expertise

Main ProductsScrews, Nails, Rivets, Staples, Bolt, Nut, Washer, Stamping Part

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:Why choose your company?

We have over 10 years of experience in fastener manufacturing and export, providing professional service and high-quality products with turnkey solutions.

Q:Do you accept OEM and ODM orders?

Yes, we absolutely accept OEM and ODM orders to meet your specific requirements.

Q:What payment terms are available?

We accept T/T, Western Union, Money Gram, Credit Card, Paypal, and L/C.

Q:Can I visit your factory or conduct online inspections?

Yes, you can visit our factory online, and we support online video inspections before shipment.

Q:What is the Minimum Order Quantity (MOQ)?

The MOQ is 1 ton for each size, but sample orders are also acceptable.