Why should you buy from us not from other suppliers?

1) More than 10 years of experienced staff answer in time. 2) Customization is available. 3) As a professional manufacturer with quality control, good service, and skilled technicians to ensure our products are finished in high quality and with stable features.

What services can we provide?

Accepted Delivery Terms: FOB, CFR, CIF, EXW. Accepted Payment Currency: USD, EUR, CNY. Accepted Payment Type: T/T, L/C at sight, PayPal. Language Spoken: English, Chinese, Spanish.

High Strength Building Roofing Tek Screws with Rubber Washers Tornillos Hexagonal Hex Head Self Drilling Screws

Name: High Strength Building Roofing Tek Screws with Rubber Washers Tornillos Hexagonal Hex Head Self Drilling Screws
Brand: Newspider Tianjin Impex Co., Ltd.
SKU: 2164889762

Tianjin, ChinaNewspider Tianjin Impex Co., Ltd.

US$1.45

1,000-9,999 kg

US$1.26

10,000-26,999 kg

US$1.20

27,000+ kg

Product specifications

type

length

Diameter

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head With Flange

Model NO.

Hex Washer Head Self Drilling Screw with Washer

Groove

Hexagon

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, GB, ANSI, BSW

Grade

Class 8.8

Measurement

Inch,Metric System

Productname

DIN 7504-K Hex Head Self Drilling Screw

Surface Treatment

Blue White Zinc Plating

Groove Type

Hex Washer Head

Washer Type

Black PVC or Rubber Washer

Thread Type

Standard Thread

Point

Drill Point

Diameter

8#-14# (4.2mm-6.3mm) or as Request

Length

3/4" - 12" (19mm-300mm) or as Request

Package

Small Box+ Carton or as Request

MOQ

1 Ton Per Size

Customization 1

Size (Diameter or Length)

Customization 2

Surface Treatment

Customization 3

Packing

Transport Package

Carton

Specification

C1022A

Trademark

OEM

Origin

Tianjin-China

HS Code

7318120090

Production Capacity

5000 Tons

Key features

High-Strength Material: Made of Carbon Steel C1022A Grade 8.8 for enhanced strength and durability.

Self-Drilling Design: Features a drill point to penetrate sheets and insulation without pre-drilling.

Anti-Corrosion Treatment: Available in Galvanized, Ruspert, Dacromet, and Spray Painting options for superior rust prevention.

Hex Head Torque Resistance: Six flat surfaces provide larger contact area, reducing slippage under high torque.

Customizable Dimensions: Diameter and length can be customized to specific project requirements. The Diameter could be M4.2, M4.8, M5.5, M6.3 (#8 #10 #12 #14). Length from 13mm to 300mm. (1/2" to 12")

Versatile Washer Options: Compatible with EPDM bonded, PVC, steel, and rubber washers for water sealing.

OEM/ODM Service: Customization available for size, packing, surface treatment, and logo printing.

Global Market Supply: Exporting to over 20 countries including Europe, Americas, and Asia with experienced support.

Company profile

Importers and ExportersFast DeliveryQuality AssuranceStandardized quality control

Newspider Tianjin Impex Co., Ltd.

Tianjin, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from SamplesExport Year: 2017-03-17Nearest Port: TianjinAverage Response Time: ≤2.99h

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier providing 3D software design, ODM, OEM, and sample-based customization. It reports more than 40 employees, separate production and packing workshops, experienced workers, process inspection, annual production of about 5,000 tons, and supply to more than 20 countries. However, it has no stated inventory, overseas warehouse, overseas showroom, overseas agent or branch, and no offline trade-show participation. Manufacturing capacity lacks a valid contract with related subcontractors. Quality and complaint-handling procedures are documented and followed, but no certification is identified. Innovation evidence is limited because no new products were reported in the past year and no SDK is available. Financial credibility cannot be reliably assessed because the supplied financial records are incomplete and inconsistent. ERP integration and several related digital systems are absent or recorded as zero.

Supplier typeThe supplier explicitly identifies itself as a professional technical supplier, offers 3D software design, ODM, and OEM services, and operates production and packing workshops for screw manufacturing. This indicates a manufacturer with technical design and contract-manufacturing capabilities.

After-Sales capabilityThe supplier has documented and followed procedures for customer complaints, supplier-service assessment, and corrective/preventive actions. However, it reports no overseas warehouse, showroom, agent, branch, or inventory capability, limiting evidence of localized after-sales support.

Production capacityThe supplier reports separate production and packing workshops, more than 40 employees, experienced workers, process inspection, annual production of about 5,000 tons, and lead times within 15 workdays to one month. Against this, it has no valid contract with related subcontractors and no inventory capability; overall manufacturing capacity is explicitly supported, though supply-chain controls have limitations.

Customization capabilityCustomization is explicitly available from samples, and the supplier states that screw customization is available across quantities and sizes. Its 3D design, ODM, and OEM services further support tailored product development.

Client casesThe supplier states that it has supplied products to more than 20 countries and provides OEM services for well-known brands. These statements constitute direct evidence of international customer experience, although no customer names or detailed case examples are provided.

Product Q&A

Q:Who are we?

We are based in Tianjin, China, and started in 2017, selling to South America, North America, Western Europe, South Asia, the Middle East, and Africa. There are about 11-50 people in our office.

Q:How can we guarantee quality?

1) To meet the requirements of different customers for size, weight, drilling speed, etc. It can be produced according to the standards of various markets, for example, American Standard, German Standard, and National Standard. 2) Always have a pre-production sample before mass production. 3) Always final Inspection before shipment.

Q:What can you buy from us?

For Screws: Drywall Screws, Drywall Drill Screws, Chipboard Screws with or without Type 17 Point, Spax Saw Thread Screws, Self Tapping decking Screws, Concrete Screws, Self Tapping Screws, Self Drilling Screws, Self Screwing Screws, Roofing Screw, Wafer Truss Head screws, Pan Head Screws, Oval Head Screws, Hex head Screws, Flat Head Screws, CSK countersunk Head Screws, Machine Screws and other Special screws. For Binding Post Screws: Book Ring, Chicago Screws/Book Binding Screws/Male Female Scre

Q:Which specifications can you customize?

1) Diameter of screws. 2) Length of screws. 3) Surface treatment, which includes the Phosphate, Galvanized, Nickel Plating, Brass Plating, Copper Plating, Ruspert, and Dacromet.

Q:What kind of packing can we supply?

We can supply various custom packing for you. If you have a special packing request, kindly get in touch with us. 1) Bale Packing: 25 kgs/carton, 25 kgs/bag, 1 ton per bag, 1 ton per wooden box. 2) Individual Packing: small box + master carton + pallet. bag + master carton + pallet.