What is your after-sales service and warranty policy?

We promise to bear responsibility for defective products by sending replacements with your next order or providing a refund if customers require.

How should I place an order?

Please provide the model, brand, quantity, and shipping method. We will quote our best price, send a Proforma Invoice, and arrange production after deposit payment.

What materials are used for your hardware accessories?

We use high-quality materials such as stainless steel, carbon steel, and alloy metals, selected for their mechanical properties like tensile strength and hardness.

Custom Black Carbon Steel Hexagon Flange Nut Serrated Slip Locking Nut

Name: Custom Black Carbon Steel Hexagon Flange Nut Serrated Slip Locking Nut
Brand: Ningbo Hansheng Machinery Parts Co.,Ltd.
SKU: 2158286115

Zhejiang, ChinaNingbo Hansheng Machinery Parts Co.,Ltd.

US$6.00

1,000-1,999 Pieces

US$5.00

2,000-2,999 Pieces

US$4.00

3,000+ Pieces

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Material

High Strength Steel

Type

Square Head

Model NO.

Nut

Connection

Hinged Bolts

Head Style

Square

Standard

DIN, ANSI, GB

Grade

9.8

Cbm

0.6

Packing

Cartons

Trade Term

Fob

Colour

Silver

OEM

Accepted

ODM

Accepted

Brand Name

Transport

Sea

Sea Transport

Yes

Payment

L/C

Shipping Port

Ningbo,China

Original

Ningbo,China

MOQ

10PCS

Shipping Mark

at The Buyer's Option

Delivery Time

25-30 Days for Production Order

Transport Package

Packing

Specification

steel

Trademark

Origin

Ningbo, China

HS Code

8479909090

Production Capacity

1000000piece/Years

Key features

Custom OEM/ODM Accepted: OEM and ODM services are accepted, allowing for customized solutions based on customer requirements.

High Strength Material: Crafted from high-strength carbon steel with Grade 9.8 for superior durability and performance.

Precision Manufacturing: Utilizes CNC machining and advanced casting techniques to ensure tight tolerances and high precision.

Strict Quality Control: Comprehensive QC system including material inspection, in-process checks, and final product testing.

ISO9001 Certified: Company adheres to ISO9001:2015 quality management system for consistent product quality.

Flexible MOQ: Low MOQ of 10 PCS for standard orders; sample orders have no MOQ restrictions.

Fast Delivery: Production lead time is 25-30 days; sample orders can be delivered in 3-5 days.

Reliable Packaging: Products are packed in sturdy cartons with cushioning to prevent damage during transit.

Company profile

Ningbo Hansheng Machinery Parts Co.,Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 10 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤6.30h

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier with 3D software design, customization, ODM, and OEM capabilities. It reports ISO9001:2015 certification and documented quality, complaint-handling, supplier-assessment, and corrective-action procedures. Production information includes two production lines, 6–10 quality-control staff, and casting-parts output of 1,000 tons, with exports mainly to Europe and North America. The supplier has operated export business since 2003 and reports that 90% of sales are exports. Innovation evidence includes new products during the past year and one national science and technology progress award. However, it has no available SDK, overseas warehouse, showroom, or overseas agents/branches. Customer-specific cases are not sufficiently documented beyond OEM service for popular brands.

Supplier typeThe supplier explicitly identifies itself as a professional technical supplier, offers 3D software design services, operates two production lines, and has exported goods since 2003. Its casting-parts production and export-market information further support that it is an established manufacturing-oriented technical supplier.

CertificationsThe supplier reports an ISO9001:2015 certificate and other certification, indicating a formal quality-management certification. The specific scope and details of the additional certification are not provided.

After-Sales capabilityThe supplier has a clear complaint-handling procedure with followed records, quality assurance in quality-control processes, traceable raw-material identification, and maintained quality-control instructions. These records support structured quality and complaint management, although dedicated overseas after-sales infrastructure is not evidenced.

R&D capabilityThe supplier reports professional R&D capability, 3D software design, new products during the past year, ODM services, OEM services for popular brands, and one national science and technology progress award. Its stated lack of an available SDK is a limitation, but the overall evidence explicitly supports product and design innovation capability.

Production capacityProduction evidence includes two production lines, 6–10 quality-control staff, and casting-parts output of 1,000 tons. The supplier also reports documented supplier-service assessment and corrective-action procedures, while lead-time statements vary across slices from within 15 workdays to one month off-peak and 2–3 months during peak season.

Customization capabilityThe supplier offers customization from samples, minor and flexible customization, full customization, and customization from designs. It also provides ODM and OEM services, explicitly demonstrating broad customization and design-manufacturing capability.