What is the lead time for production?

The average lead time is one month for both peak and off-peak seasons.

What grades are available for this product?

We supply grades 4.8, 8.8, 10.9, and 12.9.

How is the quality of finished products inspected?

We perform 100% visual inspection of finished products checked by packing staff.

High Performance Plain Hex Coupling Nut Stainless Steel Long Hexagon Heavy Nut

Name: High Performance Plain Hex Coupling Nut Stainless Steel Long Hexagon Heavy Nut
Brand: Jiaxing Sini Fastener Co., Ltd.
SKU: 876247185

Zhejiang, ChinaJiaxing Sini Fastener Co., Ltd.

US$1,020.00

1 Ton

Sample price:US$0.05/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel

Type

Hexagon Head

Model NO.

DIN6334

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN

Grade

4.8

Finish

Plain

Transport Package

Bulk Packing 25 Kg in a Carton or Bag

Specification

M6-M24

Origin

China

HS Code

73181600

Production Capacity

1000tons/Year

Key features

Wide Material Selection: Available in stainless steel 304/316, carbon steel 35#/45#, alloy steel, and brass.

Comprehensive Surface Treatment: Options include HDG, PTFE coated, plain, black, galvanized, yellow zinc plated, and dacromet.

Flexible Customization: Supports full customization, minor customization, and flexible customization from samples or designs.

Diverse Grade Options: Available in grades 4.8, 8.8, 10.9, and 12.9 to meet various strength requirements.

Broad Size Range: Diameter M6-M24 and Length 18-108mm to fit multiple application needs.

OEM and ODM Services: Professional manufacturing services available for special parts and custom designs.

Strict Quality Control: 100% visual inspection of finished products by dedicated QA/QC inspectors.

Flexible Packaging: Standard 25-30kgs/carton or customized packaging as per customer request.

Company profile

R&D CapabilitiesCustomization from Samples100% Finished Products InspectionManagement Certification

Jiaxing Sini Fastener 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: 15 Years CertifiedNearest Port: Shanghai Port; Ningbo PortAverage Response Time: ≤15h

AI-Powered supplier vetting

SummaryThe supplier operates in hardware and mechanical equipment, with stated import/export licensing and products including fasteners. It reports OEM and ODM capability, broad customization options, and manufacturing equipment that includes punching, rolling, deburring, laser cutting, bending, riveting, and hydraulic machines. Export sales account for 90% of total sales, and stated quotation terms include FOB, CFR, CIF, and EXW. However, the available evidence indicates important operational weaknesses: only one production line is reported, there is no valid manufacturing-capacity contract with related subcontractors, no inventory or overseas service infrastructure, no written supplier-service assessment procedure, and no documented corrective-action, complaint-handling, quality-assurance, or traceability systems. No certification information or specific customer cases are provided.

Supplier typeThe supplier is presented as a hardware and mechanical-equipment business, with licensed import/export and technology-import/export activities, plus sales and R&D of hardware products, mechanical equipment, and mechanical components. Its stated product scope includes fasteners such as carriage bolts, indicating a manufacturer/supplier focused on hardware and related mechanical products.

After-Sales capabilityThe supplier has no stated overseas agents or branches, overseas warehouse, overseas showroom, or overseas service countries, and it has no written procedures or records for corrective and preventive actions or customer-complaint handling. These explicit gaps indicate weak documented after-sales and international service infrastructure.

Production capacityThe supplier lists multiple processing machines and reports one production line, a one-month average lead time in both peak and off-season, and 90% export sales. Nevertheless, it lacks a valid manufacturing-capacity contract with related subcontractors, does not continuously reconcile production quantities, has no outsourcing SOP, and has no quality assurance or raw-material traceability, creating material production-control deficiencies.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization through its design and R&D capabilities. It also states that special parts can be manufactured, providing clear evidence of broad customization capability.