Do you provide material test certificates?

Yes, material and inspection certificates are provided for bulk orders.

What standards does this product follow?

The hex flange bolt is produced to DIN6921 standard, matching nut complies with DIN934.

High Strength Hex Nut and Hexagon Flange Head Bolt

Name: High Strength Hex Nut and Hexagon Flange Head Bolt
Brand: Qewitco Fasteners Co., Ltd
SKU: 2189677122

Shandong, ChinaQewitco Fasteners Co., Ltd

US$0.10-0.27

1,000 Pieces

Sample price:US$20.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Bolt and Nut

Model NO.

Bolt And Nut

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ISO

Grade

4.8 5.8 6.8 8 10.9 12.9

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Self Colour, Zinc Plated,HDG,Zinc Flake

Delivery

15-30 Days

Certification

ISO9001 CE

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

Size Standard

Metric

Material Test Certificate

Have

Sample

Samples in Stock Are Free with Freight Collect

Price Terms

Fob/CFR/CIF/DDP/DAP

Color

Silver

Quality Control

100% Quality Inspection

Application2

Connection,Fastening

Transport Package

Bulk Pack Small Boxed

Specification

M3 - M52

Trademark

Qewitco

Origin

China

HS Code

731816

Production Capacity

10000ton/Year

Key features

Integrated Flange Design: Built-in flange replaces washers, boosting bearing area and saving assembly time.

High-Strength Grades: Available in 4.8, 8.8, 10.9, and 12.9 grades for various load requirements.

Customizable Packaging: Packaging color and design can be customized according to client requirements.

OEM/ODM Service: Full customization available for material, finish, size, and logo based on drawings.

Corrosion Resistance: Blue-white galvanized surface and other finishes like HDG and Zinc Flake available.

Precision Rolled Threads: Ensures smooth engagement and anti-slip performance for reliable fastening.

ISO9001 Certified: Manufacturing follows strict international standards including DIN, ISO, and CE.

Material Test Certificates: Provided for bulk orders to ensure traceability and quality assurance.

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: ≤0.70hTerms 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.