What is your terms of packing?

Generally, we pack our products in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the products in your branded boxes with your authorization letter.

Do you test all your goods before delivery?

Our testing methods are diversified and can provide qualified company testing to meet EU standards and other requirements

Are you a factory or trading company?

TANJA is a direct factory of industrial hardware products and TANJA company specializing in manufacturing toggle latches,locks,hinges,handle etc. for more than 20 years.

Four Star Nut Knob SUS304 Knob for Equipment and Testing Instruments

Name: Four Star Nut Knob SUS304 Knob for Equipment and Testing Instruments
Brand: Tanja Industrial(Shandong)Co., Ltd
SKU: 1983184682

Shandong, ChinaTanja Industrial(Shandong)Co., Ltd

US$4.90

100-999 Pieces

US$2.50

1,000-1,999 Pieces

US$1.40

2,000+ Pieces

Sample price:US$1.40/piece.Request sample

Product profile

Customization

Available

Process

Die Casting

Molding Technics

Pressure Casting

Model NO.

T56

Application

Machinery Parts

Material

Stainless Steel

Surface Preparation

Sand Blast

Surface Roughness

Ra1.6

Machining Tolerance

+/-0.01mm

Standard

Certification

RoHS, ISO 9001:2000, ISO 9001:2008

Surface Treatment

Sand Blast/Mirror Polish

Color

Silver

MOQ

500

Style

Five Star

Transport Package

Carton

Trademark

TANJA

Origin

China

HS Code

7326909000

Production Capacity

80000PCS/Year

Key features

OEM/ODM Customization: Supports custom surface treatment, style, and production from samples or technical drawings.

High Precision Tolerance: Machining tolerance of +/-0.01mm ensures high-precision fit for testing instruments.

RoHS & ISO Certified: Certified with RoHS, ISO 9001:2000, and ISO 9001:2008 for quality assurance.

Free Sample Available: Provides free samples for quality testing with plenty of stock available.

20+ Years Experience: Over 20 years of manufacturing experience with 3,000+ product models.

Direct Factory Source: Direct factory in China with independent R&D and mold building capabilities.

Company profile

In-stock CapacityYears of Export ExperienceExperienced TeamStandardized quality control

Tanja Industrial(Shandong)Co., Ltd

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2006-06-06 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤1.75h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier is a limited company with 71 employees and offers toggle latches, hinges, door fittings, panel cabinet locks, indexing plungers, and handles. It demonstrates broad manufacturing and service capabilities, including more than 10 production lines, in-stock capacity, valid manufacturing contracts, quality assurance procedures, complaint-handling and corrective-action records, and export experience in South America, Europe, and North America. Its R&D profile is comparatively strong: it provides 3D design, ODM, OEM, SDK, flexible customization, and documented design review, verification, and validation activities. The supplier holds ISO9001:2015, ISO45001:2018, and ISO14001 certifications. However, it has no overseas warehouse, showroom, agent, or branch, reports no overseas service countries, and lacks a factory environmental impact assessment report. Financial information identifies reporting years but provides no substantive performance data. No specific customer case details are provided.

Supplier typeThe supplier is identified as a limited company, has 71 employees, is not part of a larger company group, and reports no cooperative suppliers. Its product scope covers six industrial hardware categories, indicating a standalone, specialized supplier structure.

CertificationsThe supplier reports ISO9001:2015, ISO45001:2018, and ISO14001 certifications, covering quality, occupational health and safety, and environmental management. It also conducted regular fire drills during the past year, although no factory environmental impact assessment report is available.

After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions and customer complaint handling, while its technical engineers provide production and after-sales technical support. It has in-stock service capacity and has attended CIIF 2025, but lacks overseas warehouses, showrooms, agents, and branches, with overseas services reported in zero countries.

R&D capabilityThe supplier reports new products during the past year, six R&D engineers, 3D software design, ODM capability, an available SDK, and documented design input, output, review, verification, and confirmation records. R&D engineers also handle customer requirements, technical support, and new product development, providing explicit evidence of active innovation capability.

Production capacityThe supplier operates more than 10 production lines, reports substantial product-specific output capacities, has six to ten quality-control staff, maintains in-stock capacity, and holds valid manufacturing contracts with associated subcontractors. Its quality-control processes include stated quality assurance, corrective-action procedures, and complaint-handling records.

Customization capabilityThe supplier explicitly supports customization from samples, customer designs, full customization, minor customization, and flexible customization. Its ODM service, OEM experience for well-known brands, 3D design service, and SDK availability further support a broad customization offering.

Product Q&A

Q:What are your main products and what is your MOQ?

Our main products are toggle latch, handles, knobs, hinges and other industrial hardware accessories, all of which are in sufficient stock and our MOQ is 100.

Q:Can you provide CAD drawings?

Yes, CAD /3D drawings are available upon customers' requirements.

Q:Can you produce according to the samples?

Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Q:Can you provide free samples to test quality?

Yes, We are a source factory in China, undertaking ODM /OEM orders and having independent development capabilities.

Q:How many days does it take for a customized product sample?

Usually 10-15days to finish new tooling and 20 days to finish new sample.