How do you control quality during production?

Our QC team inspects every production link for each batch of goods. We can provide you with an MTC (Material Test Certificate) and mill certificate when the goods are finished.

Can you provide free samples?

For new customers, we provide free samples for standard fasteners, but the client pays the express charges. For old customers, we send free samples and cover the express charges ourselves.

Do you accept small orders?

Yes, we accept any order size. We keep stock for various bolts, nuts, threaded rods, and washers, and can produce them quickly.

What is your delivery time?

Generally, if goods are in stock, we can deliver within 15 days. For quantities of 1-2 containers, the delivery time is 25-35 days.

What is your packing method?

Our standard packing is 20-25kg per carton, with 36 or 48 cartons per pallet (approx. 900kg). We can also produce customer logos on cartons or customize cartons according to requests.

What are your payment terms?

We accept T/T, L/C, and D/P for general orders. For small orders or samples, we accept PayPal and Western Union.

Hot-Selling ASTM A307 Grade a Hex Bolts

Name: Hot-Selling ASTM A307 Grade a Hex Bolts
Brand: Ningbo Steel Bolt Co., Ltd
SKU: 2113479485

Zhejiang, ChinaNingbo Steel Bolt Co., Ltd

US$0.10

1,000 pieces

Product profile

Customization

Available

Material

Steel

Type

Hexagon Head

Model NO.

A307

Connection

Common Bolt

Head Style

Hexagonal

Standard

ASTM

Grade

Grade a

Application

Machinery, Chemical Industry, Environmental, Building, Industry

Finish

Zinc, Plain

Head Type

Hexagon Flange Head

Surface Treatment

Black Oxide

Transport Package

Carton+Pallet

Specification

M6-M100

Trademark

ningbo-bolt

Origin

Zhejiang, China

Production Capacity

100000 Piece/Pieces Per Month

Key features

OEM/ODM Customization: Supports OEM/ODM services with flexible customization from samples, designs, or full customization.

Lifetime Warranty: Guarantees all products are 100% qualified with a lifetime warranty coverage.

ISO9001 Quality Control: Strict quality control from raw materials to finished products under ISO9001 system.

Fast Delivery Options: 15 days for stock items; 25-35 days for 1-2 container orders.

Free Sample Policy: Free standard fastener samples for new customers (buyer pays shipping); free samples for old customers.

Alibaba Credit Guarantee: Gold member of Alibaba with credit guarantee for secure transactions.

MTC and Mill Certificate: Provides Material Test Certificate (MTC) and mill certificate upon completion.

Custom Packaging: Standard 20-25kg/carton; supports custom logos and carton specifications.

Company profile

High Repeat Buyers Choice

Ningbo Steel Bolt Co., Ltd

Zhejiang, 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: 6 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤15h

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier and operates as a combined company involved in producing and selling fasteners, hardware products, auto parts, and oil pipeline fittings. It supports extensive product customization, including samples, designs, full customization, minor customization, and flexible customization. The supplier reports two production lines and one presence in a main export market, with an average lead time of one month in both peak and off-season periods. However, it lacks 3D software design services, SDK availability, in-stock capacity, overseas warehouses, overseas agents or branches, and offline trade-show participation. Finished products are checked by packing staff, while no written procedures or records are used for assessing service capability. The provided information does not establish certifications, financial strength, after-sales performance, or customer case history.

Supplier typeThe supplier is explicitly identified as a professional technical supplier. It is a combined company whose stated business scope includes production and sales of fasteners, hardware products, auto parts, and oil pipeline fittings, as well as related import and export activities.

R&D capabilityThe supplier is identified as having professional technical research and development capability, and it offers multiple forms of customization. However, it explicitly does not provide 3D software design services and has no available SDK, so the evidence supports technical customization but not broader digital or software innovation capability.

Production capacityThe supplier reports two production lines, one-month average lead times in both peak and off-season, and six years of exporting experience. Countervailing controls are limited: finished products are checked by packing staff, there is no continuous quantity reconciliation for each batch or production run, no outsourcing SOP, no valid manufacturing-capacity contract with related subcontractors, and no in-stock capacity.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. This is direct evidence of broad product-design and modification capability, although 3D software design services are not available.

Product Q&A

Q:Are you a manufacturer or trading company?

We are a manufacturer of fasteners with many years of experience in Bolts, Nuts, Threaded Rods, and Washers in Ningbo, China.

Q:Do you provide OEM/ODM services?

Yes, we accept OEM/ODM services and offer flexible customization options.

Q:How do you guarantee quality?

We have strict quality control from raw materials to finished products according to the ISO9001 quality management system. We guarantee all products are 100% qualified and support a lifetime warranty.

Q:How can I trust your company?

We are a fasteners factory in China with many years of production experience. We are a Gold member of Alibaba and Made-in-China, and we offer a credit guarantee from the Alibaba Group.

Q:What is your pricing policy?

We offer high-quality products at reasonable prices. Please send an inquiry, and we will quote you a price immediately for your reference.