What is the minimum order quantity?

The minimum order quantity is 500 Kgs.

What are the available payment terms?

We accept LC, T/T, PayPal, D/P, Western Union, and Small-amount payment.

What is the average lead time for production?

The average lead time is one month for both peak and off-season periods.

High Strength Fasteners Black Oxide Hexagon Slotted and Castle Nuts

Name: High Strength Fasteners Black Oxide Hexagon Slotted and Castle Nuts
Brand: Handan Haoqiang Fasteners Manufacturing Co., Ltd.
SKU: 2082315942

Hebei, ChinaHandan Haoqiang Fasteners Manufacturing Co., Ltd.

US$180.00

1,000-9,999 Pieces

US$1,600.00

10,000+ Pieces

Product profile

Customization

Available

Material

High Strength Steel

Type

Hexagon Socket Head

Model NO.

M6-M30

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ANSI, GB, BSW

Grade

8.8

Surface

Black Oxide

Size

Customizable

Product

Hexagon Slotted and Castle Nuts

Package

25 Kg Woven Bags/25 Kg Carton

Transport Package

25 Kg 2 Layer Waterproof PP Woven Bag

Specification

M6-M30

Trademark

Origin

China

Key features

Customizable Sizes: Sizes are fully customizable to meet specific project requirements.

Wide Standard Compliance: Meets DIN, ANSI, GB, BSW, and JIS international standards.

High Strength Material: Manufactured from high-strength carbon steel and alloy steel.

Quality Certification: ISO 9001-2008 certified quality management system.

12-Month Warranty: Comprehensive 12-month quality guarantee on all products.

Professional Support: Free engineering consultation for material selection in extreme environments.

Flexible Customization: Supports OEM, ODM, and full customization from samples or designs.

Secure Packaging: 25kg waterproof PP woven bags or cartons on pallets for safe shipping.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceSelf-branded

Handan Haoqiang Fasteners Manufacturing Co., Ltd.

Hebei, 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: 10 Years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤9.79h

AI-Powered supplier vetting

SummaryHaoqiang Fastener is a combined manufacturing and sales supplier offering bolts, nuts, screws, and washers. It reports annual productivity of 20,000 tons for hex bolts and 5,000 tons for hex nuts, supported by wire drawing, cold heading, and thread tapping equipment. The supplier provides customization from samples and designs, full, minor, and flexible customization, and offers ODM and OEM services. However, it does not provide 3D software design services and reported no new products during the past year. Quality inspection instructions are reportedly implemented uniformly. Service procedures exist for supplier assessment, corrective actions, and complaint handling, but written records are unavailable. The supplier has no overseas warehouse, showroom, agent, or branch, although it has participated in the Canton Fair. Financial records identify reporting years but provide no assessable financial results in the supplied information.

Supplier typeThe supplier is identified as a combined company engaged in manufacturing and sales of fasteners, hardware tools, and steel, with import and export activities. Its offered products include bolts, nuts, screws, and washers.

R&D capabilityThe supplier provides ODM and OEM services, but it reported no new products during the past year, no SDK availability, and no 3D software design service. This shows some product-development service capability but also explicit limitations in innovation-related resources.

Production capacityThe supplier reports annual productivity of 20,000 tons of hex bolts and 5,000 tons of hex nuts, with wire drawing, cold heading, and thread tapping machines. Its manufacturing scope covers several standard fastener categories, supporting a documented production capability.

Customization capabilityThe supplier explicitly supports customization from samples and designs, full, minor, and flexible customization, and also provides ODM and OEM services for popular brands. These multiple stated service types indicate broad customization coverage.

Product Q&A

Q:What standards do your fasteners comply with?

Our products meet DIN (German), GB (China), ANSI/ASTM (USA), BSW (UK), and JIS (Japan) standards. Custom specifications are available upon request.

Q:How can I track my international order?

A real-time tracking number will be emailed once your shipment is dispatched. For urgent inquiries, contact export customer service.

Q:What are your delivery options for overseas customers?

We offer sea freight (FOB/CIF), air freight, and express courier (DHL/FedEx) with competitive rates. Delivery timelines vary by destination.

Q:What if I receive defective products?

We provide a 12-month quality guarantee. Report issues within 7 days of receipt with photos/video, and we'll arrange replacements or refunds promptly.

Q:Can you assist with material selection for extreme environments?

Absolutely! Our engineering team offers free consultation on corrosion-resistant, high-temperature, or high-load solutions.