What grades are available for these screws?

Available grades include 4.8, 6.8, 8.8, and 10.9.

Do you offer free samples?

Yes, free samples are available for standard fasteners.

What are your lead times?

Peak season lead time is one month, while off-season lead time is within 15 workdays.

ASME B18.2.3.3m Metric Heavy Hex Screws

Name: ASME B18.2.3.3m Metric Heavy Hex Screws
Brand: Jiaxing City Qunbang Hardware Co., Ltd.
SKU: 790142155

Zhejiang, ChinaJiaxing City Qunbang Hardware Co., Ltd.

US$0.10

5,000 Pieces

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head

Model NO.

ASME B18.2.3.3M

Connection

Common Bolt

Head Style

Hexagonal

Standard

ASME

Grade

Cl.4.8/6.8/8.8/10.9

Application

Machinery

Thread

Partial/Half Thread

Max Body Length

800mm/32in

Purpose

Machinery

Used

Machinery, Chemical Industry, Environmental, Build

Transport Package

Bulk/Boxes in Cartons, Bulk in Polybags/-Buckets

Specification

M12-M36

Trademark

QBH

Origin

Jiaxing, Zhejiang

HS Code

7318151090

Production Capacity

500 Tons/Month

Key features

ASME Standard Compliance: Meets ASME B18.2.3.3m standard for metric heavy hex bolts.

Multiple Grade Options: Available in grades 4.8, 6.8, 8.8, and 10.9 for diverse strength needs.

Customizable Thread Type: Offers partial or half thread options to suit specific requirements.

Extended Length Capacity: Maximum body length up to 800mm (32 inches) for heavy-duty applications.

Versatile Material Selection: Manufactured from low carbon steel, medium carbon steel, or alloy steel.

Broad Industry Application: Suitable for machinery, chemical industry, environmental, and construction sectors.

Flexible Packaging: Available in bulk, cartons, polybags, buckets, or wooden pallets.

Free Sample Availability: Free samples provided for standard fasteners upon request.

Company profile

Importers and ExportersYears of Export ExperiencePatents AwardedCustomization from Designs

Jiaxing City Qunbang Hardware Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2004-01-10Nearest Port: SHANGHAI, NINGBOAverage Response Time: ≤15hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, DDP, EXW, Others

AI-Powered supplier vetting

SummaryJiaxing City Qunbang Hardware Co., Ltd. is identified as a limited trading company supplying fasteners, including bolts, nuts, thread rods, washers, and related products. It reports more than 10 production lines, stated bolt and nut output, broad export-market coverage, and access to Shanghai and Ningbo ports. The supplier has documented procedures and records for corrective/preventive actions, complaint handling, supplier approval, and service-capability assessment. It provides 3D software design, ODM, and customization from designs or samples, and reports OEM service for known brands. However, no certification information is provided, overseas showrooms or agents are absent, no offline trade-show participation is reported, and recent new-product activity, environmental assessment, and fire-drill status are either negative or unknown. Financial records are referenced for multiple years, but the provided information does not establish financial strength.

Supplier typeThe supplier is explicitly classified as a limited trading company. Its stated business scope covers hardware, fasteners, plastic products, molds, and import/export activities, while its company description also presents production, design, sales, and after-sales functions.

After-Sales capabilityThe supplier has clear procedures and followed records for corrective and preventive actions, customer complaints, approved-supplier updates, and service-capability assessment. It is located near Shanghai and Ningbo ports, but reports no overseas showroom, overseas agent or branch, and no offline trade-show participation.

R&D capabilityThe supplier provides 3D software design, has CAD capability, reports one R&D patent and one registered trademark, offers ODM services, and has an available SDK. Conversely, it reports no new products in the previous year and no private-mold capability, indicating documented but limited evidence of ongoing innovation.

Production capacityThe supplier reports more than 10 production lines, annual bolt output of 4,000 tons and nut output of 5,000 tons, with off-peak lead time within 15 working days. Its stated product range and proximity to Shanghai and Ningbo ports further support operational and export capability.

Customization capabilityCustomization from customer designs and samples is explicitly available, together with 3D software design, ODM services, OEM service for known brands, CAD capability, and SDK availability. The absence of private-mold capability limits the documented customization scope but does not negate the stated services.

Product Q&A

Q:Are you a factory or trading company?

We are factories, mainly producing fasteners, such as nuts, bolts, screws and rods, and meanwhile, we also manage other hardware products.

Q:Where is your factory located? How can I visit there?

Our factory is located in Jiaxing City, Zhejiang Province with a good location and convenient transportation, which is next to Shanghai Port, Ningbo Port and Zhapu Port.

Q:How does your factory do regarding quality control?

Quality is priority we supervise each production link and we always attach great importance to quality controlling from the beginning to the end.

Q:What is the maximum body length available?

The maximum body length is 800mm or 32 inches.

Q:What materials are used for these bolts?

We use low carbon steel, medium carbon steel, and alloy steel.