What's your Delivery Time?

Standard parts: 7-15days. Non-standard parts: 15-25days. We will make the delivery as soon as possible with the guarantee quality.

How to Custom-made (OEM/ODM)

If you have a new product drawing or a sample, please send to us, and we can custom-made the hardware as your required. We will also provide our professional advices of the products to make the design to be more realized & maximize the performance.

Which mode of transport would be better?

In general, the production are heavy, we advice to make delivery by sea, Also we respect your views of other transportation as well.

High Strength ASTM A490 Carbon Steel Heavy Hex Head Structural Bolts

Name: High Strength ASTM A490 Carbon Steel Heavy Hex Head Structural Bolts
Brand: Kunshan Hongyongsheng Precision Hardware Products Co., Ltd.
SKU: 2300321035

Jiangsu, ChinaKunshan Hongyongsheng Precision Hardware Products Co., Ltd.

US$0.01-0.10

10,000 Pieces

Sample price:US$0.01/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel

Type

Hexagon Head

Model NO.

Hyslss0003

Groove

None / No Slot

Connection

Standard Common Bolt

Head Style

Hexagonal

Standard

DIN, GB, ANSI, BSW, JIS, GOST, ISO

Grade

4.8, 6.8, 8.8, 10.9, 12.9; A2-70, A2-80, A4-80

Customized

Yes

Drawing

Yes

Application

Machinery, Chemical Industry, Environmental, Build

Process

CNC Turning / Cold Forging / Machining + Polishing

Service

OEM/ODM Support, Free Samples Available

Thread Specification

Custom Full Metric Thread (M, Unc, Unf)

Surface Treatment

Black / Silvery / Color Zinc / PTFE

Tolerance Grade

ISO 2768 Standard Tolerance

Corrosion Resistance

A2/A4 Stainless Steel with Anti-Rust

Knurl Specification

N/a

Key Features

Hexagonal Head, Multi-Grade, Multi-Standard

Transport Package

Polybag+Export Strong Carton

Specification

M3-M100 (custom per client demand)

Trademark

HYS

Origin

China

HS Code

7318160000

Production Capacity

100ton/Month

Key features

Multi-Grade Material Options: Available in A2-70, A4-80, and strength grades 4.8 to 12.9 for diverse applications.

Custom Thread Specifications: Supports full metric threads (M, UNC, UNF) and custom thread forms per client demand.

Comprehensive Surface Treatments: Offers plain, polished, PTFE, galvanized zinc, and other custom finishes for corrosion resistance.

OEM/ODM Customization Support: Full customization available from samples, designs, or drawings with professional engineering advice.

High Precision Manufacturing: Strict adherence to ISO9001:2008 and ISO 2768 tolerance standards for high-precision parts.

Wide Standard Compliance: Meets DIN, GB, ANSI, BSW, JIS, GOST, and ISO standards for global compatibility.

Flexible Delivery Times: Standard parts delivered in 7-15 days; non-standard parts in 15-25 days.

Free Samples Available: Customers can request free samples to verify quality before placing bulk orders.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Kunshan Hongyongsheng Precision Hardware Products Co., Ltd.

Jiangsu, 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: ShanghaiAverage Response Time: ≤1.50h

AI-Powered supplier vetting

SummaryKunshan Hongyongsheng Precision Hardware Products Co., Ltd. is a China-based factory established in 2016, with 25 employees and a business scope covering automotive parts, mechanical components, furniture parts, plastic products, metal materials, and mechanical equipment. It offers extensive customization and ODM services, reports new product development within the past year, and provides OEM services to well-known brands. Production-related evidence includes CNC and machining equipment, five quality inspectors, standardized finished-product inspection instructions, and peak/off-season lead times within 15 working days. Service procedures cover supplier assessment, corrective and preventive actions, and customer complaints, although overseas service infrastructure is absent. An SGS audit report is identified, but the provided data does not state a certification or a positive audit result. Financial information is present only as year labels, so financial strength cannot be assessed. Customer and brand...

Supplier typeThe supplier is identified as a factory and a limited company located in Kunshan, Suzhou, Jiangsu, China. It was established on March 10, 2016, and has 25 employees, indicating a relatively small manufacturing enterprise.

After-Sales capabilityThe supplier has written procedures and records for customer complaint handling, corrective and preventive actions, and service-capability assessment. However, it has no overseas warehouses, showrooms, agents or branches, has not participated in offline trade shows, and reports zero countries with overseas services.

R&D capabilityThe supplier reports that it had new products within the past year and provides ODM services. It does not have an available SDK, but SDK availability is not sufficient by itself to negate the stated product-development capability.

Production capacityThe supplier operates as a manufacturing factory covering automotive, mechanical, furniture, plastic, and related products. It lists CNC lathe, machining center, and screening-machine capabilities, employs five quality inspectors, follows standardized finished-product inspection instructions, and reports lead times within 15 working days in both peak and off-season.

Customization capabilityBoth the R&D and design-capability records identify customization from samples, customization from designs, full customization, minor customization, and flexible customization. The supplier also reports ODM availability, providing explicit evidence of broad customization support.

Product Q&A

Q:Why choose us?

To provide our customers with first-class services in the supply of quality fasteners minimizing costs. We wish to build successful relations with our partners and be their first choice as a fasteners supplier. Our mission is professional customer service, and innovation in technology. Further more, we do not only offer you fasteners with more reasonable quality and price than your expectations, but also would like to be your friend and to provide you market sales suggestion for your reference,

Q:How is quality ensured?

All our processes strictly adhere to ISO9001:2008 procedures. We have strict quality control from producing to delivery. Our company had strong technology support, We have cultivated a group of managers who are familiar with product quality , good at modern concept of management.

Q:If you can not find on our website the product you need how to do?

You can send the pictures/photos and drawings of the products you need by email , we will check if we have them. We develop new models every month, Or you can send us samples by DHL/TNT, then we can develop the new model especially for you.

Q:Can You Strictly Follow The Tolerance on The Drawing And Meet The High Precision?

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

Q:How should I order and make payment?

By T/T, for samples 100% with the order; for production, 30% paid for deposit by T/T before production arrangement, the balance to be paid before shipment.