How are the products packaged?

Standard packaging is 20-25 kg per carton, with 36 or 48 cartons per pallet. Custom packaging with your logo is also available.

Can I visit your factory?

Yes, we welcome factory visits. Please contact us in advance to arrange transportation from the airport or train station.

How can I trust your company?

We are verified suppliers on Made-in-China and undergo rigorous certification processes to ensure we are a legitimate manufacturer.

Carbon Steel Fasteners ASTM A194 Nuts ASTM A193 Bolts A307 Studs CS Screws

Name: Carbon Steel Fasteners ASTM A194 Nuts ASTM A193 Bolts A307 Studs CS Screws
Brand: Bolnut Fastener Co., Ltd
SKU: 2213318145

Jiangsu, ChinaBolnut Fastener Co., Ltd

US$0.10

1 Piece

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Round Head

Model NO.

A490 A325

Connection

Common Bolt

Head Style

Round

Standard

DIN, ANSI, GB, JIS, BSW

Grade

4.8/6.8/8.8/10.9/12.9/Gr.2 5 8

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Plain/Black

MOQ

10000pieces

Thread

Metric

Name

Hex Bolt

Ceteficate

ISO9001

Transport Package

20-25kg/Carton+900kg Pallet

Specification

M4-M100 1/4-4"

Trademark

BNT

Origin

China

HS Code

731815

Production Capacity

1000ton/Month

Key features

Custom Logo & Design: We accept custom logos and designs on products and packaging based on your specifications.

Free Samples Available: Free samples provided for standard fasteners under 1kg; existing customers also get free express.

Wide Material Selection: Available in Carbon Steel, Stainless Steel (SS304/316), and various grades from 4.8 to 12.9.

Multiple Finishing Options: Options include Zinc Plating (Yellow/White/Blue/Black), HDG, Black Oxide, and Dacroment.

Flexible Production Capacity: Cold forging for M2-M24 and hot forging for M24-M100 with CNC machining for custom parts.

Strict Quality Assurance: Rigorous durability testing and technical design ensure high reliability and extended lifespan.

Competitive Factory Pricing: Direct manufacturer pricing offers cost-effective solutions without compromising on quality.

Fast Delivery for Stock Items: In-stock items can be delivered within 2-5 days; bulk orders take 18-25 days.

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: ≤0.72h

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.