Are free samples available?

Yes, new customers can receive free standard fastener samples (express charges covered by client), and old customers receive free samples with express charges covered by us.

What quality certifications do you have?

We maintain strict quality control following the ISO9001 quality management system and provide MTC and mill certificates.

What is the minimum order quantity?

We accept any order size and keep stock of various fasteners to accommodate different requirements.

Hardened Structural Flat Washers ASTM F436

Name: Hardened Structural Flat Washers ASTM F436
Brand: Ningbo Steel Bolt Co., Ltd
SKU: 2116016725

Zhejiang, ChinaNingbo Steel Bolt Co., Ltd

US$0.10-1.00

1,000 Pieces

Product profile

Customization

Available

Type

Flat Gasket

Material

Steel

Model NO.

ASTM F436

Combination Washer Structure

A Type

Combination Washer Packaging

All Inclusive

Spring Washer Type

Standard

Packing

Cartons+Plastic Bags

Standard

DIN

Finish

Plain

Application

Industry

Surface Treatment

Hot DIP Galvanized

Transport Package

Carton+Pallet

Specification

M6-M100

Trademark

ningbo-bolt

Origin

Zhejiang, China

Production Capacity

100000 Piece/Pieces Per Month

Key features

Lifetime Warranty: Covers all products with a lifetime warranty for mechanical defects.

ISO9001 Certified: Strict quality control following ISO9001 management system.

OEM/ODM Accepted: Supports OEM and ODM services for customized needs.

Free Samples: Free standard fastener samples available for new customers.

Flexible Packaging: Standard 20-25kg/carton with customized options available.

Fast Delivery: Stock items delivered within 15 days; bulk in 25-35 days.

MTC Provided: Mill Test Certificates provided upon completion of orders.

DIN Standard: Manufactured according to DIN standards for high quality.

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.