What are the payment methods?

We accept 30% T/T deposit with 70% before shipping, L/C, D/P, PayPal, Western Union, and small-amount payments.

How are products packaged?

Standard packaging is 20-25kg per carton, 36-48 cartons per pallet. Custom logos and packaging are available.

Do you accept custom designs?

Yes, we accept custom designs for both products and boxes with our professional design team.

Are you a verified supplier?

Yes, we are verified on Made-in-China and undergo rigorous certification to ensure legitimacy.

Can I visit your factory?

Yes, factory visits are welcome anytime. Please contact us in advance to arrange airport or station transportation.

Stainless Steel Nuts, ASTM A194 Gr. 2h Black Oxide Heavy Hex Nuts 1/4"-5", High Strength Hex Nuts ASTM A563

Name: Stainless Steel Nuts, ASTM A194 Gr. 2h Black Oxide Heavy Hex Nuts 1/4"-5", High Strength Hex Nuts ASTM A563
Brand: Bolnut Fastener Co., Ltd
SKU: 2216573815

Jiangsu, ChinaBolnut Fastener Co., Ltd

US$0.10

1 Piece

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel/Carbon Steel

Type

Hexagon Head

Model NO.

ASTM A194 2h/A563 Gr. Dh

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ANSI, GB, JIS, GOST, BSW

Grade

10.9/12.9

Application

Machinery, Chemical Industry,Building

Finish

Plain, Black Oxide, Zinc Plated, Chrome Plated

Thread

Metric

Certificate

ISO9001,RoHS

Name

Heavy Hex Nuts

Measurement System

Inch,Metric

Transport Package

20-25kg/Carton+900kg Pallet

Specification

1/4"-5"

Trademark

BNT

Origin

China

HS Code

731815

Production Capacity

1000ton/Month

Key features

Diverse Material Options: Available in Stainless Steel (SS201-SS904L) and Carbon Steel grades.

Multiple Finishing Choices: Zinc plating, Black Oxide, HDG, Dacroment, and Nickel plating available.

Custom Logo and Design: Accepts custom logos on products and customized packaging designs.

Free Sample Availability: Free samples provided for standard fasteners under 1kg weight.

Comprehensive Certifications: Products meet ISO9001, RoHS, DIN, ANSI, JIS, and GB standards.

Flexible Customization: Full customization from samples, designs, or minor adjustments.

Fast Delivery for Stock: In-stock items delivered within 2-5 days.

Professional Manufacturing: Over 10 years of experience with rigorous quality testing.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceFast Delivery

Bolnut Fastener Co., Ltd

Jiangsu, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 13 YearsNearest Port: SHANGHAI , NINGBO ,ZHAPU , SHENZHEN, TIANJINGAverage Response Time: ≤0.97h

AI-Powered supplier vetting

SummaryThe supplier is identified as a trading company in Zhangjiagang, Suzhou, with business scopes covering labor protection products, apparel, textiles, communication equipment, electronics, and certain medical protective products. It is described as a professional technical supplier and offers multiple customization modes, ODM services, and OEM services for popular brands. However, it has only one R&D engineer, launched no new products in the past year, and does not provide 3D software or SDK services. Service procedures and complaint-handling procedures exist, but supplier approval records are incomplete. Financial information is represented only by reporting years, without performance values. No overseas warehouse, showroom, overseas branch or offline trade-show participation is reported.

Supplier typeThe supplier is explicitly classified as a trade company, while its stated scope includes labor protection products, apparel, textiles, medical protective equipment, communication equipment, and electronic products. It is also identified as a professional technical supplier, indicating a trading-oriented business with technical and customization support rather than confirmed manufacturing status.

After-Sales capabilityThe supplier has a clear complaint-handling procedure with followed records, and it has a corrective and preventive action mechanism with implementation records. However, its general service-assessment procedure has no records, and its approved-supplier list lacks approval signatures or dates, indicating documented but incompletely controlled service processes.

R&D capabilityThe supplier is identified as a professional technical supplier and offers ODM services, but it has only one R&D engineer, launched no new products in the past year, and lacks both 3D software design and SDK capabilities. This shows some technical development and design support, but limited demonstrated innovation output and digital R&D capability.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides ODM services, directly evidencing broad customization and design-manufacturing support.

Client casesA repeat-buyer preference of 50%–80% is reported, and the supplier states that it provides OEM services for popular brands. These are positive customer-related indicators, but no named customers, specific projects, order examples, or independently verifiable case details are provided.