Double Thread Hex Washer Head SUS316 410 Bi Metal Self Drilling Screw

Name: Double Thread Hex Washer Head SUS316 410 Bi Metal Self Drilling Screw
Brand: Qewitco Fasteners Co., Ltd
SKU: 2111550372

Shandong, ChinaQewitco Fasteners Co., Ltd

US$0.015-0.50

1,000 Pieces

Sample price:US$20.00/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel

Type

Hexagon Head

Model NO.

Double Thread Self Drilling Screw

Groove

Hexagon

Connection

Common Bolt

Head Style

Washer Head

Standard

DIN, ISO

Grade

8.8

Delivery

20-30 Days

Packag Color

Customizable

Thread Standard

Unc/Unf/Unef/Uns/Bsw/Bsf/Metric Coarse/Metric Fine

Custom Order

Customization by Drawing/Sample

ODM/OEM

Available

Service

Custom-Made Service

Material Test Certificate

Have

Sample

Samples in Stock Are Free with Freight Collect

Price Terms

Fob/CFR/CIF/DDP/DAP

Color

Customizable or Sliver

Quality Control

100% Quality Inspection

Application2

Connection, Fastening

Finish

Plain

Transport Package

Bulk Pack Small Boxed

Specification

DIA 6.3MM/5.5MM LENGTH 75MM TO 300MM

Trademark

Qewitco

Origin

China

HS Code

731816

Production Capacity

10000ton/Year

Key features

Bimetal Composite Structure: Combines SUS410 drill point hardness with SUS304/316 shank corrosion resistance.

No Pre-Drilling Required: Directly penetrates metal up to 12mm thick, saving 50%+ installation time.

Enhanced Fastening Design: Double-thread structure provides superior grip and vibration resistance.

Multiple Anti-Corrosion Options: Available in plain, Dacromet, or Ruspert coatings for harsh environments.

Customizable Color: Color options include customizable shades or standard silver.

Customization by Drawing: Full customization available based on customer drawings or samples.

100% Quality Inspection: Every item undergoes strict visual inspection before shipment.

Free Samples Available: Stock samples provided free of charge; customer covers freight only.

Company profile

Years of Export ExperienceExperienced TeamSelf-brandedHigh Repeat Buyers Choice

Qewitco Fasteners Co., Ltd

Shandong, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2003-12-05Average Response Time: ≤0.45hTerms of Payment: T/T

AI-Powered supplier vetting

SummaryThe supplier demonstrates established export experience, with 90% of sales from exports and 22 years of exporting. It has ISO9001:2015 certification, raw-material traceability, quality assurance, and 100% finished-product inspection, although inspection is performed by packing staff and only two quality inspectors are reported. Customization is broad, covering samples, designs, full customization, minor customization, and flexible customization. Service strengths include in-stock capability, stated lead times within 15 workdays in both peak and off-season, and multiple payment and quotation terms. Limitations include no overseas warehouse, showroom, agent, branch, or overseas service-country coverage, no Fortune 500 cooperation, no new products launched in the last year, one R&D engineer, no popular-brand OEM, and an undocumented corrective/preventive-action process. Financial credibility cannot be assessed because the provided financial figures are excluded from evaluation.

Supplier typeThe supplier is strongly export-oriented, reporting 90% export sales and 22 years of export experience. It can provide in-stock service and accepts FOB, CIF, CFR, and EXW terms, but reports no overseas warehouse, showroom, agent, branch, or overseas service-country coverage.

CertificationsThe supplier reports an ISO9001:2015 certificate for both sustainable development management and management systems, plus other product compliance or sustainability certifications. The specific additional certifications are not identified, so the evidence supports ISO9001 holding but not broader certification strength.

R&D capabilityThe supplier reports one R&D engineer and no new products launched during the previous year. It also reports no available SDK and no popular-brand OEM capability, which indicates limited documented innovation evidence.

Production capacityProduction-related evidence includes raw-material traceability, 100% finished-product inspection, quality assurance, four own-brand quality-control capabilities, inventory capacity, and lead times within 15 workdays in both peak and off-season. Only two quality inspectors are reported, and finished products are checked by packing staff, so production capability is positive but quality-control depth is limited.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. This is direct evidence of broad customization capability.

Product Q&A

Q:What payment methods do you accept?

We primarily operate via T/T (bank transfer), but we also accommodate secure payment alternatives such as L/C or PayPal for smaller orders. Discuss your preferred method with our sales representatives.

Q:What shipping terms do you offer?

We support a full range of Incoterms, including FOB, CIF, and DDP. Our logistics team will analyze your needs and propose the most efficient and budget-friendly shipping strategy.

Q:How is product quality ensured?

Our quality assurance process includes pre-production material checks, in-process inspections, and pre-shipment testing to ensure every item meets international standards before delivery.

Q:What industry experience do you have?

With over two decades in global trade, we've built a strong reputation for reliability, supplying industrial goods to clients across Europe, North America, and beyond.