What grades of bolts are available?

We offer ASTM standard grades including B7, B7m, B16, B8, and B8m.

Do you provide quality certificates?

Yes, our QC team inspects every production link and provides MTC and mill certificates upon completion.

What are the customization options for surface treatment?

We offer Zinc or Plain surface treatment options for our heavy hex bolts.

Ningbo Factory Heavy Hex Bolts Assortment

Name: Ningbo Factory Heavy Hex Bolts Assortment
Brand: Ningbo Steel Bolt Co., Ltd
SKU: 2112575435

Zhejiang, ChinaNingbo Steel Bolt Co., Ltd

US$0.10-1.00

10,000 Pieces

Product profile

Customization

Available

Material

Steel

Type

Hexagon Head

Model NO.

A193

Connection

Common Bolt

Head Style

Hexagonal

Standard

ASTM

Grade

B7 B7m B16 B8 B8m

Application

Machinery, Chemical Industry, Environmental, Building, Industry

Finish

Plain

Sufrface Treatment

Zinc/Plain

Factory

in Ningbo

Transportation

Ship

Transport Package

Carton+Pallet

Specification

M6-M100

Trademark

ningbo-bolt

Origin

Zhejiang, China

Production Capacity

100000 Piece/Pieces Per Month

Key features

Lifetime Warranty Coverage: Covers all mechanical defects with strict ISO9001 quality control ensuring 100% qualified products.

OEM/ODM Services Available: Accepts customization from samples, designs, and offers full or minor flexible customization options.

Fast Delivery for Stock Items: Stock items delivered within 15 days; larger quantities delivered within 25-35 days.

Free Samples for New Customers: New customers receive free standard fastener samples (express charges apply).

Comprehensive Quality Certificates: QC team inspects every link providing MTC and mill certificates upon completion.

Flexible Payment Terms: Accepts T/T, L/C, D/P for general orders and PayPal/Western Union for small or sample orders.

Customizable Surface Treatment: Offers Zinc or Plain surface treatment options for heavy hex bolts.

Wide Grade Selection: Available in ASTM grades B7, B7m, B16, B8, and B8m for various industrial applications.

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: ≤18h

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.