What is the minimum order quantity?

The minimum order is 500kgs for each specification, or 2000 pieces for trial orders.

What is the delivery time?

Delivery time is approximately 30 days after payment, with OEM samples taking about 10 days.

OEM Stainless Steel Nut Washers Set Galvanized Hex Bolt

Name: OEM Stainless Steel Nut Washers Set Galvanized Hex Bolt
Brand: Weifang Shengao Machinery Co., Ltd.
SKU: 698652162

Shandong, ChinaWeifang Shengao Machinery Co., Ltd.

US$0.39-3.19

100 Pieces

Sample price:US$0.49/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head

Model NO.

SA-DXLS

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ANSI, GB, JIS, BSW, GOST

Grade

8.8

Application

Machinery, Environmental, Building

Finish

Hot Galvanizing

Name

Bolt and Nuts

Material Type

Steel: 35CrMoA, 35CrMo, 30CrMoA, 30CrMo, 42cr2moa,

Place of Origin

Shandong, China

Thread

Unc,Unf,Uef,Un,Uns

Quality Stardard

ISO, DIN, ANSI, JIS, BS and Non-Standard

R & D Service

Design and Drawing

Dimension

Customized

Unique

15 Years of Manufacturing

OEM and ODM

100% with Drawings and Samples

Delivery Time

30 Days After Payment

OEM Sample

About 10 Days

MOQ

2000 Pieces for Trial Order

OEM Package

Anti-Rust Package System

Inner Package

Carton Box/Plastic Bag

Transport Package

Plywood Box

Specification

SGS

Trademark

Shengao

Origin

Weifang City, Shandong Province, China

HS Code

87089910

Production Capacity

50000PCS/Month

Key features

Customizable Dimensions: Dimensions can be customized according to customer drawings and specifications.

OEM and ODM Service: 100% OEM and ODM service available with provided drawings and samples.

Wide Material Range: Available in Carbon Steel, Stainless Steel 304/316, Brass, and Aluminum.

Multiple Grade Options: Grades include 4.8, 8.8, 10.9, 12.9, and Stainless Steel 18-8/316.

2-Year Quality Guarantee: Comprehensive 2-year quality guarantee period provided after shipment.

Professional Manufacturing: Over 15 years of experience in the fasteners industry with own plant.

Flexible Packaging: Custom packaging options including bulk, carton, pallet, or wooden case.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Weifang Shengao Machinery Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2010-04-06 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤2.58h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryWeifang Shengao Machinery Co., Ltd. is a limited company focused on mechanical parts, hardware, metal tools, CNC machine tools, and related components. It identifies as a professional technical supplier and offers 3D software design and broad customization services, including sample-, design-, full-, minor-, and flexible customization. The supplier has written procedures and records for service assessment, corrective actions, and complaint handling. Its export sales share is stated at 71%–90%, with three years of export experience. However, the supplier has nine employees, only two years of total R&D engineer experience, no new products in the past year, no ODM, SDK, or overseas service infrastructure, and no stated customer cases. Audit information is provided for a TUV Rheinland audit with a validity period from September 4, 2025 to September 3, 2026, but the evaluation result is recorded as 0 and no certification name is specified.

Supplier typeThe supplier explicitly identifies as a professional technical supplier and a limited company. Its stated business and product scope covers mechanical parts, hardware products, metal tools, CNC machine tools, functional components, forgings, and powder metallurgy products; the audit record identifies mechanical parts as the primary product.

After-Sales capabilityThe supplier has clear written procedures and followed records for corrective and preventive actions and for handling customer complaints. This directly supports an established service-response process, although the slices do not provide service performance results or response-time data.

Production capacityThe supplier reports an annual production output range, six to ten quality-control staff, on-time delivery, random production quality inspection, and its own factory. It has nine total employees, so the available evidence supports an operating production capability, while capacity beyond the stated output range cannot be determined.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization, and also welcomes OEM and ODM requests according to its company description. These repeated statements provide direct evidence of broad customization coverage, although the separate record states that ODM is not available, creating a conflict on ODM specifically.

Product Q&A

Q:Why choose Shengao product?

We shengao have our own plant Weifang Shengao machinery Co., Ltd, therefore we can surely promise the quality of every product and provide you comparable price.

Q:Do you provide OEM Service?

Yes, we provide OEM Service.

Q:Do you provide customized Sheet Metal Stamping/Stamped Parts/Punching Parts?

Yes. Customers give us drawings and specifications, and we will manufact accordingly.

Q:What is your payment term?

We provide kinds of payment terms such as L/C, T/T, Paypal, Escrow, etc. If there's anything we can help, please feel free to contact with us.

Q:What materials are available for these fasteners?

Materials include Carbon Steel, Alloy Steel, Stainless Steel (304/316), Brass, and Aluminum.