What is your delivery time?

Standard parts: 7-15 days. Non-standard parts: 15-25 days. We ensure delivery as soon as possible with guaranteed quality.

How to custom-made (OEM/ODM)?

Send us new product drawings or samples. We will custom-make the hardware as required and provide professional advice to maximize performance.

Which mode of transport is better?

Generally, we advise delivery by sea due to heavy production. We also respect your views on other transportation methods.

Black Carbon Steel Square Head Cylindrical Head Bolt

Name: Black Carbon Steel Square Head Cylindrical Head Bolt
Brand: Hebei Yunchang Fastener Manufacturing Co., Ltd.
SKU: 2253339045

Hebei, ChinaHebei Yunchang Fastener Manufacturing Co., Ltd.

US$0.05

1,000-4,999 Pieces

US$0.03

5,000-9,999 Pieces

US$0.01

10,000+ Pieces

Product specifications

Square head bolts

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Square Head

Model NO.

Square head bolts

Connection

Common Bolt

Head Style

Square

Standard

DIN

Grade

10.9

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Black

Neck Design

Square Neck

Base Material

Low Carbon Steel or Medium Carbon Steel

Surface Treatment

Black

Property Class

Level 4.8, Level 8.8, Level 10.9

Thread Specification

Coarse Thread

Core Functions

Anti-Rotation, Single-Sided Operation, Aesthetics

Structure Recognition

Square Head with Round Top, Square Neck, Carriage

Head

Square (for Wrenches)

Place of Origin

Hebei Chian

Nuts Per Bolt

Thread Type

Metric

Single Package Size

25X25X15 Cm

Single Gross Weight

0.300 Kg

MOQ

1000PCS

Package

Bags and Bags

Transport Package

Wooden Crate + Pallet

Specification

Customization available

Trademark

Yun Chang

Origin

Hebei-China

Key features

High Precision Customization: Strictly follows drawing tolerances for high-precision parts and custom models.

ISO Certified Quality: Processes adhere to ISO9001:2008 with 100% finished product inspection.

Fast Delivery Options: Standard parts ship in 7-15 days; non-standard parts in 15-25 days.

Flexible OEM/ODM Service: Accepts samples, drawings, or photos for custom hardware manufacturing.

Durable Carbon Steel Build: Made from low/medium carbon steel with black surface treatment.

High Grade Strength: Available in Grade 10.9, 8.8, and 4.8 for various machinery applications.

Professional Technical Support: Expert team provides design advice to maximize product performance.

Secure Payment Terms: Supports T/T, L/C, D/P, PayPal, and Western Union for orders.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export Experience

Hebei Yunchang Fastener Manufacturing Co., Ltd.

Hebei, China

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 22 Years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤7.56h

About Our Factory & Business Background

AddressSouthwest Industrial Zone, Lu Chan Street and Northeast Side of Construction Street, Yongnian District, Handan City, Hebei Province

Plant Area52307 square meters

Number of Employees239

Registered Capital50,180,000 RMB

Terms of PaymentLC, T/T, D/P, PayPal, Western Union, Small-amount payment

International Commercial Terms(Incoterms)FOB, CIF, CFR, EXW

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Minimum Order Quantity1 Ton

Supply Chain Partners3

Our Production Capability & Technical Expertise

Main ProductsFoundation Bolt, Steel Structure Bolt, Shear Bolts, Hex Bolt, Hex Nut, Flange Bolt, Flange Nut, Full-thread Studs, Full-thread Studs

Production Lines3

Production MachinesNuts Cold Header, Bolts Cold Header, Purface Treatment Machine Equipment, Purface Treatment Machine Equipment, Cutting Machine, Lathe, Threading Machine, Surface Treatment Tank, Surface Painting Production Line, Sand Blasting Machine, hot-forging machine, CNC Machining Center, hot-forging machine, Punching Machine, Packing Machine, Nuts Threading Machine

QA/QC inspectors11 people

Inspection Type for Finished Products100% inspection(Function inspection & Visual inspection)

Inspection Method for Finished ProductsHave instructions and uniformly followed

R&D Engineers5 people

Traceability of Raw MaterialsYes

Our Industry Experience & Global Business Record

Year of Establishment2003-07-03

Main MarketsDomestic

Repeat Buyers Choice50%~80%

Number of Foreign Trading Staff6

Overseas Agent/BranchNo

New Products Launched in Last yearNo

Our Certifications, Standards & Industry Recognition

Management System CertificationISO45001:2018, ISO14001

Cooperated with Fortune 500No

Product Q&A

Q:Why choose us?

We provide first-class services in quality fastener supply, minimizing costs. Our vision is to be your first choice, and our mission is professional customer service and technological innovation.

Q:How is quality ensured?

All processes strictly adhere to ISO9001:2008 procedures. We have strict quality control from producing to delivery, supported by strong technology and experienced management.

Q:What if I cannot find the product on your website?

You can send pictures, photos, or drawings by email for us to check. We develop new models monthly, or you can send samples via DHL/TNT for custom development.

Q:Can you strictly follow the tolerance on the drawing?

Yes, we can provide high precision parts and make the parts exactly as your drawing.

Q:How should I order and make payment?

By T/T. For samples, 100% payment with the order. For production, 30% deposit by T/T before production, and the balance before shipment.