The Minimum Order Quantity is 10,000 pieces for customized items. For general trading, the MOQ is 0.4 Ton.

Can I visit your factory?

Yes, factory visits are welcome. Please contact us in advance to arrange transportation from the airport or train station.

How are products packaged?

Standard packaging is 20-25 kg per carton, with 36 or 48 cartons per pallet (approx. 900-960 kg). Custom packaging with customer logos is available.

Premium Hexagon Socket Grub Screws with Concave Points

Name: Premium Hexagon Socket Grub Screws with Concave Points
Brand: Bolnut Fastener Co., Ltd
SKU: 2208236405

Jiangsu, ChinaBolnut Fastener Co., Ltd

US$0.10

1 Piece

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel, Alloy Steel/Stainless Steel

Type

Round Head, Round Head

Model NO.

Din916

Groove

Hexagon

Connection

Common Bolt

Head Style

Round

Standard

DIN, GB, ANSI, BSW, JIS, GOST

Grade

10.9

Connection

Common Bolt

Head Style

Round

Standard

DIN, ANSI, GB, JIS, Bsw

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Black

Grade

A2-70

MOQ

10000pieces

Thread

Metric

Name

Rods

Ceteficate

ISO9001

Transport Package

20-25kg/Carton+900kg Pallet

Specification

M4-M100

Trademark

BNT

Origin

China

HS Code

731815

Production Capacity

1000ton/Month

Key features

Free Sample Availability: Free samples provided for standard fasteners under 1kg weight.

Custom Logo and Design: Accepts custom logos, designs, and packaging according to client specs.

Wide Material Selection: Available in SS201, SS304, SS316, and various alloy steel grades.

Multiple Finishing Options: Offers Zinc, HDG, Black Oxide, Anodization, and Nickel plating.

Flexible Production Capacity: Cold forging for M2-M24 and hot forging for M24-M100+ sizes.

Fast Delivery for Stock Items: In-stock items can be delivered within 2-5 days.

Verified Manufacturer: ISO9001 certified with 13 years of export experience.

Comprehensive Payment Terms: Accepts T/T, L/C, D/P, PayPal, and Western Union.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceFast Delivery

Bolnut Fastener Co., Ltd

Jiangsu, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 13 YearsNearest Port: SHANGHAI , NINGBO ,ZHAPU , SHENZHEN, TIANJINGAverage Response Time: ≤0.85h

AI-Powered supplier vetting

SummaryThe supplier is identified as a trading company in Zhangjiagang, Suzhou, with business scopes covering labor protection products, apparel, textiles, communication equipment, electronics, and certain medical protective products. It is described as a professional technical supplier and offers multiple customization modes, ODM services, and OEM services for popular brands. However, it has only one R&D engineer, launched no new products in the past year, and does not provide 3D software or SDK services. Service procedures and complaint-handling procedures exist, but supplier approval records are incomplete. Financial information is represented only by reporting years, without performance values. No overseas warehouse, showroom, overseas branch or offline trade-show participation is reported.

Supplier typeThe supplier is explicitly classified as a trade company, while its stated scope includes labor protection products, apparel, textiles, medical protective equipment, communication equipment, and electronic products. It is also identified as a professional technical supplier, indicating a trading-oriented business with technical and customization support rather than confirmed manufacturing status.

After-Sales capabilityThe supplier has a clear complaint-handling procedure with followed records, and it has a corrective and preventive action mechanism with implementation records. However, its general service-assessment procedure has no records, and its approved-supplier list lacks approval signatures or dates, indicating documented but incompletely controlled service processes.

R&D capabilityThe supplier is identified as a professional technical supplier and offers ODM services, but it has only one R&D engineer, launched no new products in the past year, and lacks both 3D software design and SDK capabilities. This shows some technical development and design support, but limited demonstrated innovation output and digital R&D capability.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides ODM services, directly evidencing broad customization and design-manufacturing support.

Client casesA repeat-buyer preference of 50%–80% is reported, and the supplier states that it provides OEM services for popular brands. These are positive customer-related indicators, but no named customers, specific projects, order examples, or independently verifiable case details are provided.

Product Q&A

Q:Can I get free samples?

Yes, free samples are available for standard fasteners. We ship weights under 1kg for free. Existing customers also receive free samples with covered express charges.

Q:What is the delivery time?

Stock items are delivered in 2-5 days. Orders of 1-2 containers take 18-25 days. Expedited production is available for larger orders.

Q:Do you accept custom logos or designs?

Yes, we accept custom logos, product designs, and packaging. Our professional design team can create products based on your specifications.

Q:What are the payment terms?

Standard terms are 30% T/T deposit and 70% before shipping. We also accept L/C, D/P, PayPal, and Western Union.

Q:What materials are available?

We offer Stainless Steel (SS201, SS303, SS304, SS316, SS316L, SS904L, F593) and Alloy Steel (Grades 4.6 to 12.9, SAE Gr.2/5/8, ASTM 307A/B, A325, etc.).