How long is the lead time for production?

The average lead time is within 15 workdays for both peak and off-peak seasons.

What surface treatments are available?

Options include Color Zinc, White Zinc, Blue Zinc, Nickel Plating, Oxidation Black, Chrome Plating, and more.

Where is your factory located?

Our factory is located in Tianjin Xiqing Automobile Industrial Zone, Tianjin, China.

M8-M20 Options

Name: Oppu Three-Piece Washer Assembly Set - M3/M4/M6/M8-M20 Options
Brand: OPPU (Tianjin) Industrial Parts Co., Ltd.
SKU: 2181787512

Tianjin, ChinaOPPU (Tianjin) Industrial Parts Co., Ltd.

US$0.60

1,000-4,999 Pieces

US$0.20

5,000-9,999 Pieces

US$0.10

10,000+ Pieces

Product specifications

M

Product profile

Customization

Available

Standard

DIN, ANSI, GB, JIS

Material

Stainless Steel

Model NO.

four-piece washer assembly

Connection

Welding

Surface Treatment

Galvanized Sheet

Head Type

Hexagon

Specification

M3, M4, M6, M8-M20

Trademark

oppu

Origin

Tianjin

HS Code

7415290000

Production Capacity

5000ton/Year

Key features

Diverse Material Options: Available in Plastic, Aluminum, Iron, and Stainless Steel 201/304/316.

Multiple Standard Compliance: Meets DIN, ANSI, GB, JIS, and various national and metric standards.

Extensive Surface Treatments: Options include Color Zinc, Nickel Plating, Chrome Plating, and Oxidation Black.

Customization Acceptance: Factory accepts custom orders for non-standard shapes and specifications.

Wide Head Type Selection: Includes Hexagon, Round, Flat, Countersunk, and various specialized heads.

High Hardness Grades: Offers grades from Carbon Steel 4.8 to 12.9 and Stainless Steel A2-70.

Over 30 Years Experience: Manufacturer with over three decades of professional production history.

ISO Management Certified: Certified under ISO9001:2015, ISO45000:2018, and ISO14001 standards.

Company profile

Cooperated with Fortune 500Self-brandedFast DeliveryQuality Assurance

OPPU (Tianjin) Industrial Parts Co., Ltd.

Tianjin, China

CertifiedBusiness Type: Manufacturer/Factory & Trading CompanyExport Year: 2025-06-01Nearest Port: tianjinAverage Response Time: ≤0.22hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CIF

About Our Factory & Business Background

AddressTianjin Xiqing Automobile Industrial Zone (Zhangjiawo Industrial Zone), No. 11 Taijin Road, Zone 1, Tianjin, China

Plant Area2834 square meters

Number of Employees34

Registered Capital10,000,000 RMB

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Minimum Order Quantity1000 pcs

Supply Chain Partners200

Our Production Capability & Technical Expertise

Main ProductsHardware Fastener, Bolts, Nuts, Screws, Washer, Industrial Parts, Pins, Studs

Our Industry Experience & Global Business Record

Year of Establishment2012-08-06

Main MarketsAfrica, Domestic

Repeat Buyers Choice80%~100%

Number of Foreign Trading Staff3

Overseas Agent/BranchNo

Our Certifications, Standards & Industry Recognition

Management System CertificationISO9001:2015, ISO45001:2018, ISO14001, Others

Cooperated with Fortune 500Yes

Product Q&A

Q:What materials are available for this washer assembly set?

We offer Plastic, Aluminum, Iron, and Stainless Steel (201, 304, 316).

Q:Which standards do your products comply with?

Our products comply with DIN, ANSI, GB, JIS, and various national and metric standards.

Q:Do you accept custom orders?

Yes, we accept custom orders for non-standard shapes and specifications.

Q:What is the minimum order quantity?

The minimum order quantity is 1000 pieces.

Q:What are the available payment terms?

We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.

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