Custom M4 M5 M6 M8 M10 M12 Hex Coupling Nuts Long Hex Nut

Name: Custom M4 M5 M6 M8 M10 M12 Hex Coupling Nuts Long Hex Nut
Brand: Jiaxing Sini Fastener Co., Ltd.
SKU: 921100925

Zhejiang, ChinaJiaxing Sini Fastener Co., Ltd.

US$0.015

1,000 Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ANSI, JIS

Grade

4.8

Transport Package

Carton + Pallet

Specification

M6-M36

Origin

China

HS Code

7308900000

Production Capacity

1000ton/Year

Key features

Customizable Specifications: Supports custom sizes from M4 to M12, various grades (4.8, 6.8, 8.8), and finishes like Zinc Plated or Black.

ISO and SGS Certified: Products are ISO certified and SGS certified with special personnel for quality inspection before warehouse entry.

Fast Delivery Options: Stock items can be shipped within 72 hours; standard parts take 10-15 days, non-standard parts 20-25 days.

OEM and ODM Service: We offer OEM services and special screws based on customer requirements, including customization from samples or designs.

Flexible Payment Terms: Accepts 30% deposit with balance before delivery via T/T or L/C payment methods.

Professional Packaging: Uses carton, bag, or custom packaging to ensure safety and avoid losses during transportation.

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: ≤18h

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:Is your company a factory or a trader?

Our company is a combination of production and trade, industry and trade integration business. We offer the OEM and the special screw that you want. For the samples, our sample is provided free of charge, but not including freight. For the samples that needs book the molds, the buyers need to pay the fee of molds. Please enquire for details.

Q:What does your company have?

Our company mainly produces and sells medium and high-end screws. Our company have series products of stainless steel screws, self-tapping screws, machine screws, inner and outer hex screws, rivets, step screws, nuts, metal tensile parts, Lathe parts and machining. If you need more, there will be a discount. For these discounts, please ask for a quote.

Q:How is the quality of the company guaranteed?

Our company's products are ISO certified and SGS certificates. There are special personnel for quality inspection before entering and leaving the warehouse. Our company can provide bilingual version of IQC (incoming material quality control) and OQC (finished product control).

Q:How long is the delivery time?

Expect transportation time, in general, the stock can be shipped within 72 hours, there is no stock, the standard parts need to be produced 10-15 days; non-standard parts need 20-25 days. Please enquire for details.

Q:How do you pay?

We pay 30% of the purchase price first, and pay the balance before delivery. We can accept T/T, L/C and other payment methods, please call us for details.