What is the delivery time for regular and custom orders?

Regular specs are delivered in 3-5 days post-payment; custom orders take 7-15 days.

Are samples available and what are the costs?

Samples in stock are free, but the customer must cover the freight cost.

What materials are used for these nuts?

We use Stainless Steel and Carbon Steel with grades 6.8, 8.8, and 10.8.

High-Strength Combination Nut with Conical Washer for Construction Machinery

Name: High-Strength Combination Nut with Conical Washer for Construction Machinery
Brand: Qewitco Fasteners Co., Ltd
SKU: 2132574902

Shandong, ChinaQewitco Fasteners Co., Ltd

US$0.005-0.02

1,000 Pieces

Sample price:US$20.00/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel

Type

Hexagon Head

Model NO.

Black Q322 combination nut

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ANSI, GB, JIS, GOST, BSW, ISO

Grade

8.8

Certification

ISO9001 CE

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

Price Terms

Fob/CFR/CIF/DDP

ODM/OEM

Available

Service

Custom-Made Service

Size Standard

Metric/Inch

Material Test Certificate

Have

Sample

Samples in Stock Are Free with Freight Collect

Quality Control

100% Quality Inspection

Application

Connection, Fastening

Transport Package

Bulk Pack Small Boxed

Specification

M3 - M10

Trademark

Qewitco

Origin

China

HS Code

731816

Production Capacity

10000ton/Year

Key features

Superior Vibration Resistance: Patented locking design prevents loosening under severe dynamic loads, shock, and vibration.

Streamlined Assembly: Pre-assembled units reduce part numbers, minimize inventory complexity, and eliminate assembly errors.

Surface Protection: Engineered bearing surface distributes clamp load evenly to prevent indentation and galvanic corrosion.

Thermal Compensation: Adaptive capability compensates for surface irregularities and thermal expansion to maintain clamping force.

Wide Standard Compatibility: Available in DIN, ANSI, GB, JIS, GOST, BSW, and ISO standards with various thread types.

Customization Options: Customization available by drawing or sample with customizable packaging colors.

ISO Certified Quality: Holds ISO 9001, ISO 45001, and ISO 14001 certifications for quality and safety.

Versatile Applications: Ideal for automotive, construction machinery, EVs, aerospace, and renewable energy sectors.

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: ≤1.11hTerms 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.