What certifications do you have?

We are ISO certified and provide Third-party Inspection reports, including SGS reports, to ensure product quality.

What payment terms do you accept?

We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments. Terms include EXW, FOB, CIF, and DDU.

What is the warranty or after-sales service?

We provide good after-sales service with all questions replied within 12 hours. We also offer professional technical support and free samples for testing.

Stainless Steel Composite Double Thread Hex Head Tek Roof Screw For Sandwich Panel

Name: Stainless Steel Composite Double Thread Hex Head Tek Roof Screw For Sandwich Panel
Brand: Suzhou Tsingri Fasteners Co., Ltd.
SKU: 2158017835

Shandong, ChinaSuzhou Tsingri Fasteners Co., Ltd.

US$0.06-1.18

20,000 Pieces

Sample price:US$0.50/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Shape of Head

Hexagon

Model NO.

sandwich panel screw 325

Surface Finishing

Plain

Certification

ISO

Customized

Thread

Coarse/Fine Thread

Sample

Available

Testing Report

Available

Standard

International/Customized

Inspection

Third Party/SGS Report

Application

Roofing Construction Crest Fixing

Head Mark

Available

Transport Package

Required

Specification

ST5.5-ST6.3/75mm-300mm

Trademark

Tengri/Tsingri

Origin

China

HS Code

7318159090

Production Capacity

500tons/Month

Key features

Customized Material Options: Available in SS410 or customized materials including SUS304/316/410, Carbon Steel, and Aluminum.

Customized Surface Treatment: Options include Ruspert, Dacromet, Galvanized, Phosphated, and other customized finishes.

Customized Size and Thread: Sizes ST5.5-ST6.3/75mm-300mm and Coarse/Fine threads are fully customizable.

High Efficiency Design: Sharp #3 drill point and double thread design ensure smooth tapping and strong locking force.

Fast Lead Time: In-stock items ship within 7 days; customized items require 15-30 days.

Quality Assurance: Third-party inspection and SGS reports available; ISO certified manufacturer.

Professional Manufacturer: Over 30 years experience with advanced equipment and 24/7 technical support.

Wide Application Range: Suitable for color coated steel, aluminum roofing, PUF sheets, and thermal insulation materials.

Company profile

Management CertificationHigh Repeat Buyers ChoiceOEM ServicesODM Services

Suzhou Tsingri Fasteners Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 year CertifiedNearest Port: Shanghai PortAverage Response Time: ≤2.61h

AI-Powered supplier vetting

SummarySuzhou Tsingri Fasteners Co., Ltd. is a China-based limited trading company established in 2023 with 13 employees and a broad fastener portfolio. It reports export activity, self-operated import/export rights, inventory capability, customization from designs and samples, and OEM service for well-known brands. Its stated product output includes multiple screw categories, while lead time during off-peak seasons is within 15 working days. However, quality-control evidence is weak: it reports fewer than five quality-control staff, no quality-testing equipment, unknown quality-assurance and traceability status, and no written procedures or records for corrective actions or complaints. An SGS audit is documented, but the reported evaluation result is 0 and the report expired in 2025. Financial records are referenced for 2021–2023, but no substantive financial assessment is provided. No SDK is available, and no overseas warehouse or showroom is provided.

CertificationsAn SGS audit was conducted, with a report period from May 14, 2024 to May 13, 2025, but the audit evaluation result is recorded as 0. The slices do not identify any active product or management certifications, and the audit report has expired.

After-Sales capabilityThe supplier states that customer emails are handled within 24 hours and that experienced engineers support service coordination. However, it has no written procedures or records for complaint handling or corrective and preventive actions, and it has no overseas warehouse or showroom, so formal and local after-sales infrastructure is not demonstrated.

Production capacityThe supplier reports output across self-drilling, roofing, bi-metal, and self-tapping screws, inventory capability, a 5,000-square-meter manufacturing area, a 3,000-square-meter warehouse, and 500 tons per month capacity, with off-peak lead time within 15 working days. These statements support operational capacity, although the supplier is also classified as a trading company and its manufacturing-capacity contract status is unknown.

Customization capabilityThe supplier explicitly reports customization from designs, samples, full customization, minor customization, and flexible customization. It also states that it provides OEM services for well-known brands, directly supporting broad customization and OEM capability.