High Quality DIN 603 Round Head Square Neck Bolt Carriage Bolt

Name: High Quality DIN 603 Round Head Square Neck Bolt Carriage Bolt
Brand: Ningbo Kingli Fastener Co., Ltd.
SKU: 768877665

Zhejiang, ChinaNingbo Kingli Fastener Co., Ltd.

US$0.20

500 Pieces

Sample price:US$0.20/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel,Stainless Steel,Alloy Steel

Type

Round Head

Model NO.

DIN 603

Connection

Common Bolt

Head Style

Round

Standard

DIN, ANSI, GB

Grade

4.6,5.6,5.8,8.8,10.9,12.9

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Black,Z/P,HDG,PTFE,Plain

Payment

T/T,L/C,D/P

Sample

Coating

Black,Z/P,HDG,PTFE,Plain

Used

Machinery Assembly, Oil & Gas Projects, Structural

Class

4.6,5.6,5.8,8.8,10.9,12.9

Transport Package

25kg/Carton, 36carton/Pallet

Specification

M5-M20

Trademark

KLF

Origin

Ningbo, China

HS Code

7318151001

Production Capacity

1000ton /Month

Key features

Diverse Material Options: Available in Carbon Steel, Stainless Steel, and Alloy Steel.

Wide Grade Range: Offers grades 4.6, 5.6, 5.8, 8.8, 10.9, and 12.9.

Multiple Surface Finishes: Options include Black, Z/P, HDG, PTFE, and Plain.

Customized Specialty Parts: Produces customized specialty and non-standard parts.

OEM and ODM Services: Full OEM and ODM services are available for clients.

Rigorous Quality Assurance: Two-stage QA protocol with pre-production and pre-shipment checks.

Flexible Payment Terms: Accepts T/T, L/C, and D/P for various order sizes.

Fast Lead Time: Off-season lead time within 15 workdays.

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 is your packing method?

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

Q:What is your quality assurance system?

We employ a rigorous two-stage QA protocol: Pre-production involves dimensional checks on samples. Pre-shipment includes full batch inspection covering raw material, process, and finished product inspection to ensure dimensions, mechanical properties, macro etch, and chemical composition conform to standard requirements.

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.

Q:What are your payment terms and trade services?

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