What grades are available?

We provide Grade 4.8 and Grade 8.8.

Do you offer quality guarantees?

Yes, we ensure good quality before delivery and will deal with any quality or packaging problems immediately.

What certifications do you have?

Our products are certified under ISO and SGS.

Carbon Steel or Stainless Steel Self-Locking Nut

Name: Carbon Steel or Stainless Steel Self-Locking Nut
Brand: Qingdao sindko metal products Co., Ltd.
SKU: 770172282

Shandong, ChinaQingdao sindko metal products Co., Ltd.

US$0.001-2.00

10,000 Pieces

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head

Model NO.

Nut

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN

Grade

4.8 & 8.8

Finishing

Zinc Plated,Hot DIP Galvanized,Black Treatment

Certificate

ISO/SGS

Delivery

15-20days for One Container

Customized

Yes

Transport Package

Bulk in Carton Then Palletized

Specification

M3-M52

Trademark

Customized

Origin

Zhejiang

HS Code

73181600

Production Capacity

200 Tons Per Month

Key features

Diverse Material Options: Available in Carbon Steel and Stainless Steel 304/316.

Wide Size Range: Sizes available from M3 to M52.

Multiple Finishing Options: Electrical galvanized, hot dip galvanized, and black treatment.

Customization Service: Custom products available for large quantity orders.

High Grade Standards: Offered in Grade 4.8 and 8.8.

Fast Delivery: 15-20 days delivery time for one container.

ISO and SGS Certified: Products meet ISO and SGS certification standards.

Quality Assurance: Immediate resolution for any quality or packaging issues.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceFast DeliveryFull Customization

Qingdao sindko metal products Co., Ltd.

Shandong, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Full Customization CertifiedExport Year: 6 Years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤2.15h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryQingdao Sindko Metal Products Co., Ltd. is a China-based limited company in Shandong that operates as both a trading company and manufacturer/factory. It specializes in hose clamps and related metal products, with over 18 years of stated production experience. The supplier reports more than 10 production lines, 21–30 quality-control staff, 11–20 years of R&D-engineer experience, broad export-market coverage, and one-month lead times in both peak and off-season periods. However, the records also state only three total employees, no stock, overseas warehouse, overseas showroom, overseas agents or branches, and no participation in offline trade shows. CE is listed as a certification, and regular fire drills were conducted, but no factory environmental impact assessment report is available. R&D, ODM, popular-brand OEM, and SDK capabilities are explicitly unavailable. Financial credibility and customer cases cannot be adequately assessed from the supplied information.

Supplier typeThe supplier is identified as Qingdao Sindko Metal Products Co., Ltd., a Chinese limited company operating as both a trading company and manufacturer/factory. Its stated specialization is hose clamps and related products, including pipe clamps, channels, slotted angles, and strut fittings.

CertificationsCE is listed under the supplier’s sustainable development and product certification capability, providing explicit evidence of certification holding. However, no broader certification portfolio or factory environmental impact assessment report is stated.

R&D capabilityThe supplier reports 11–20 years of total R&D-engineer experience, but it explicitly had no new products in the past year, provides no ODM service, offers no SDK, and does not provide OEM services for popular brands. The explicit lack of recent product development indicates a deficiency in demonstrated innovation capability.

Production capacitySindko states over 18 years of production experience, operates more than 10 production lines, has 21–30 quality-control staff, and reports one-month average lead times in both seasons. These records provide explicit evidence of established production and quality-control capacity, although the separate record stating only three total employees creates a data inconsistency.

Customization capabilityThe supplier’s business scope and product range cover hose clamps, pipe clamps, and related mechanical products, but the records explicitly state no ODM service and no popular-brand OEM capability. No direct evidence of broader customer-specific customization is provided.