Payment Terms & Trade Services?

Standard Terms: FOB ,CIF, EXW Payment Methods: SWIFT TT transfer, D/P, LC at sight (negotiable for bulk orders)

High Quality GB/39-1988 Square Nut Grade C

Name: High Quality GB/39-1988 Square Nut Grade C
Brand: Ningbo Kingli Fastener Co., Ltd.
SKU: 906071155

Zhejiang, ChinaNingbo Kingli Fastener Co., Ltd.

US$0.15

1,000 Pieces

Sample price:US$0.15/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Square Head

Model NO.

GB/39-1988

Connection

Common Bolt

Head Style

Square

Standard

DIN

Grade

8.8

Used

Machinery Assembly, Oil & Gas Projects, Structural

Payment

T/T,L/C,D/P

Sample

Coating

Black,Z/P,HDG,PTFE,Plain

Class

4.8,8.8,10.9,12.9

Transport Package

25kgs/CTN, 36ctns/Pallet

Specification

M8-M24

Trademark

KLF

Origin

Ningbo, China

HS Code

7318160000

Production Capacity

1000ton /Month

Key features

Comprehensive Certifications: ISO9001:2015, API, PED, AD2000, CPR certified for global compliance.

Customization Capabilities: Offers non-standard designs and customized fastener solutions.

Wide Size Range: Available in sizes M3-M160 and 1/4-4 inches.

Diverse Surface Finishes: Options include Black, Zinc, HDG, Phosphated, PTFE, and Dacromet.

Multi-Material Options: Manufactured from Alloy Steel, Stainless Steel, Carbon Steel, and Brass.

Flexible Packaging: Customizable wooden boxes with fumigation options available.

Global Industry Application: Serves machinery, oil & gas, construction, shipbuilding, and energy sectors.

Integrated Manufacturing: Own 18,000 sqm facility with cold and hot forging capabilities.

Company profile

Years of Export ExperienceExhibition ExperienceODM ServicesFlexible Customization

Ningbo Kingli Fastener Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedExport Year: 15 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤6.68h CertifiedTerms of Payment: LC, T/T

AI-Powered supplier vetting

SummaryThe supplier is an ISO9001:2015-certified fastener, machined-component, and associated-products manufacturer with stated certifications including API 20E-0066 BSL2, PED, AD2000 Merkblatt W0, and compliance with multiple international standards. It reports six production lines, six to ten quality-control staff, and annual capacities of 4,000 tons of studbolts, 5,000 tons of hex nuts, 3,000 tons of thread rods, and 4,000 tons of hex bolts. The supplier supports extensive customization, ODM, and OEM services, and reports new products during the past year. Export experience is stated as 15 years, with 90% of sales from exports and broad global markets. However, service and complaint procedures lack written records, and the supplier has no overseas warehouse, showroom, agent, branch, or offline trade-show participation. Financial evidence is insufficient for a credibility judgment.

Supplier typeThe supplier identifies itself as an ISO9001:2015-certified manufacturer of fasteners, machined components, and associated products. Its stated product range includes studbolts, hex nuts, thread rods, and hex bolts, supported by six production lines and dedicated cutting, punching, chamfering, and heat-treatment facilities.

CertificationsThe supplier reports ISO9001:2015 certification and additional certifications including API 20E-0066 BSL2, PED2014/68/EU, and AD2000 Merkblatt W0. It also states compliance with ASTM, ANSI, DIN, ISO, AS, GB, and EN standards, providing explicit evidence of broad certification and standards coverage.

After-Sales capabilityThe supplier has written procedures for service assessment, approved-supplier management, corrective and preventive actions, and complaint handling, but no written records are available for these processes. It also has no overseas warehouse, showroom, agent, branch, or offline trade-show participation, limiting demonstrated overseas service infrastructure.

R&D capabilityThe supplier reports that it introduced new products during the past year, provides ODM services, and has a stated total experience of two years for R&D engineers. It does not have an available SDK, but the reported new-product activity and ODM capability provide some evidence of innovation support.

Production capacityThe supplier reports six production lines, six to ten quality-control staff, and stated annual capacities of 4,000 tons of studbolts, 5,000 tons of hex nuts, 3,000 tons of thread rods, and 4,000 tons of hex bolts. Its facilities include cutting, punching, chamfering, and heat treatment, indicating established manufacturing capability.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. These capabilities are stated consistently across the R&D and production information, supporting a broad customization offering.

Client casesThe supplier states that it provides OEM services for well-known brands, has exported for 15 years, derives 90% of sales from exports, and serves markets across the Americas, Europe, Asia, Africa, Australia, and the Middle East. These statements demonstrate reported customer and market experience, although no specific customer names or project details are provided.

Product Q&A

Q:Are you a trading company or manufacturer?

We are an integrated manufacturer with our own factory. Our modern 18,000 sqm (20-acre) facility enables us to produce high-quality fasteners and specialized parts.

Q:What's your product range?

KLF specializes in cold/hot forged bolts, threaded rods,stud bolts and nuts . We produce both standard fasteners and customized specialty/non-standard parts.

Q:What's your packing way?

25kg/box,36boxes/pallet(fumigation or no- fumigation tray) 20kg/box,48boxes/pallet(fumigation or no-fumigation tray) 15kg/box,48boxes/pallet(fumigation or no- fumigation tray)

Q:Quality Assurance System ?

We employ a rigorous two-stage QA protocol: Pre-production: Dimensional checks on samples Pre-shipment: Full batch inspection including--raw material inspection,process inspection, finished product inspection Ensuring DIMENSIONS / MECHANICAL PROPERTIES / MACRO ETCH / CHEMICAL COMPOSITION-- Conforms to the standard requirement

Q:Which industries do your products serve?

Widely used in machinery assembly, oil & gas projects, structural steel construction, shipbuilding, and wind/solar energy installation systems.