M6 M8 M10 M12 Carbon Steel DIN6334 Round Coupling Nuts

Name: M6 M8 M10 M12 Carbon Steel DIN6334 Round Coupling Nuts
Brand: Jiaxing Sini Fastener Co., Ltd.
SKU: 929844435

Zhejiang, ChinaJiaxing Sini Fastener Co., Ltd.

US$40.00

1,000 Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Round Head

Connection

Common Bolt

Head Style

Round

Standard

DIN, ANSI

Grade

8.8

Transport Package

Carton + Pallet

Origin

China

HS Code

7308900000

Production Capacity

1000ton/Year

Key features

Comprehensive Certifications: ISO, ROHS, and SGS certified for quality assurance.

Wide Standard Coverage: Available in DIN, ANSI, ASTM, JIS, and BSW standards.

Multiple Strength Grades: Offers Grade 4.8, 8.8, 10.9, 12.9, A2-70, A4-70, and A4-80.

Diverse Finishing Options: Yellow, blue, white zinc plated, Galvanized, HDG, Chromate, and Dacromet.

Flexible Material Selection: Carbon steel, Stainless steel SS304, A2, SS314, and A4 available.

Extensive Size Range: Sizes from M2 to M100 with lengths from 5mm to 300mm.

OEM and ODM Services: Full customization, minor customization, and flexible customization available.

Secure Packaging: Plastic bags, chipboard cartons, and plywood pallets with belt and film.

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: ≤24h

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.

Product Q&A

Q:Are you a trading company or manufacturer?

We are a factory and OEM services are available.

Q:How long is your delivery time?

Generally 7-10 days if goods are in stock, or 15-20 days if not in stock, depending on quantity.

Q:Do you provide samples and is it free?

Yes, we offer samples for free but the customer must pay the freight cost.

Q:What are your terms of payment?

30% T/T in advance, balance before shipment, or L/C.

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Jiaxing Sini Fastener Co., Ltd.

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M6 M8 M10 M12 Carbon Steel DIN6334 Round Coupling Nuts