What certifications do your factory and products have?

Our factory has ISO, CE, ROHS certifications; fasteners comply with ANSI, ASME, DIN, JIS and GB standards.

Do you support customization for fasteners and machined parts?

Yes, we support full customization of size, material, surface treatment and packaging for all our products.

What is your monthly production capacity for fasteners?

We have strong monthly production capacity for fasteners, which is sufficient to efficiently meet the delivery requirements of your bulk orders.

High Precision Vented Socket Head Screws M4 M6 M8 or Custom Vented Hex Head Screw Hollow Screws with Hole DIN933 From Pdm

Name: High Precision Vented Socket Head Screws M4 M6 M8 or Custom Vented Hex Head Screw Hollow Screws with Hole DIN933 From Pdm
Brand: Qingdao Pengrui Machinery Co., Ltd.
SKU: 2292284625

Shandong, ChinaQingdao Pengrui Machinery Co., Ltd.

US$0.60

5,000-9,999 Pieces

US$0.40

10,000+ Pieces

Product specifications

hex vented screw

Cap head screw

Hollow Set Screw

Sample price:US$40.00/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel, Carbon Steel,Steel,

Type

Vented Screws

Model NO.

Hollow Screw Bolts

Groove

Hexagon Head

Connection

Through Hole

Head Style

Hexagonal

Standard

DIN, GB, ANSI, ANSI ISO

Grade

A2-70 A4-70

Product Name

Vented Cap Head Screws

Sample

as Per Request

OEM

Acceped

Quality

High Quality

Screw Type

Hollow Screws

Hole Dia.

1.5mm,2.0mm or Customized

Hexagon Height

2.1mm,2.8mm or Customized

Feature

Heavy Tensile Strength,Corrosion Resistant,etc;

MOQ

500 PCS

Delivery Time

30-40 Working Days

Core Process

Cold Forming,Thread Rolling,CNC Turning,etc;

Transport Package

Carton+Pallet

Specification

M6/M8/M10/M12/M16 or Customized

Trademark

PDM

Origin

China

Key features

Customizable Hole Diameter: Hole diameter available in 1.5mm, 2.0mm, or fully customized to specific requirements.

Customizable Hexagon Height: Hexagon height options include 2.1mm, 2.8mm, or fully customized dimensions.

High Precision Tolerance: Strict dimensional inspection ensures plus-minus 0.002mm tolerance for accuracy.

Diverse Material Options: Available in 304/316 stainless steel and 8.8/12.9 carbon steel for various environments.

Comprehensive Surface Finishes: Offers zinc plating, passivation, black oxide, and nickel plating for corrosion resistance.

ISO and RoHS Certified: Products and factory certified under ISO 9001, CE, and RoHS standards.

Advanced Manufacturing Process: Utilizes cold forging, CNC precision drilling, and thread rolling for high strength.

Full Customization Service: Supports non-standard drawings, special hole diameters, and custom strength grades.

Company profile

Importers and ExportersYears of Export ExperienceHigh Repeat Buyers Choice

Qingdao Pengrui Machinery Co., Ltd.

Shandong, 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: 14 Years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤24h

AI-Powered supplier vetting

SummaryThe supplier presents established manufacturing and export capabilities, with ISO9001:2015 certification, two production lines, 6–10 quality-control staff, and stated contracts with affiliated subcontractors. It supports flexible customization, ODM, OEM for popular brands, and reports new products in the past year. Export activity has continued for 11 years, with 51%–70% of sales from exports and self-operated import/export rights. Service strengths include inventory capability, documented complaint and corrective-action procedures, quality assurance, and lead times within 15 working days in both peak and off-season periods. However, the supplier has no overseas warehouse, showroom, agents, branches, or stated overseas-service countries, and has not participated in offline trade shows. Supplier-service assessment lacks written procedures and complete records. Financial credibility cannot be assessed from the non-monetary information provided.

Supplier typeThe supplier is identified as a combined company rather than an offshore company, and its profile covers manufacturing, export trade, service, quality control, R&D, and sustainability capabilities. This supports classification as an integrated manufacturing and trading-oriented supplier, although the exact legal business structure is not further specified.

CertificationsThe supplier holds an ISO9001:2015 certificate. This is explicit evidence of a recognized quality-management-system certification, although no additional certifications are stated.

After-Sales capabilityThe supplier has documented procedures and records for customer complaints and corrective/preventive actions, provides inventory capability, and reports lead times within 15 working days in both peak and off-season periods. However, it has no overseas warehouse, showroom, agents, branches, or stated overseas-service countries, while its supplier-service assessment process has no written procedures or followed records.

R&D capabilityThe supplier reports two years of total R&D-engineer experience, new products developed during the past year, ODM capability, customization from designs and samples, an available SDK, and one national science and technology progress award. These stated capabilities provide explicit evidence of active R&D and innovation support.

Production capacityThe supplier operates two production lines, has 6–10 quality-control staff, maintains valid manufacturing-capacity contracts with affiliated subcontractors, and reports 30 qualified suppliers for service capability. It also states inventory capability and lead times within 15 working days in both peak and off-season periods, indicating established operational capacity.

Customization capabilityThe supplier explicitly offers flexible, minor, and full customization, including customization from customer designs and samples, as well as ODM services and OEM for popular brands. These stated services demonstrate broad customization and contract-manufacturing capability.

Client casesThe supplier names long-term customers including Richelieu Hardware, Hillman Agroup, VIPA, CFI, and BUFAB. These named customer relationships provide explicit evidence of customer experience, although the information does not state order scope, duration for each account, or independently verified performance outcomes.

Product Q&A

Q:Who are we?

We are based in Shandong, China, start from 2012,sell to North America(40.00%),Domestic Market(15.00%),Eastern Europe(10.00%),Southeast Asia(10.00%),Oceania(5.00%),Western Europe(5.00%),Eastern Asia(4.00%),Northern Europe(4.00%),Southern Europe(4.00%),Mid East(3.00%). There are total about 11-50 people in our office.

Q:How can we guarantee quality?

Always a pre-production sample before mass production; Always final Inspection before shipment;

Q:What can you buy from us?

Fastener,CNC Machined Parts,Metal Fabrication

Q:Why should you buy from us not from other suppliers?

Fasteners, Hardware Components & Auto Fittings

Q:What services can we provide?

Accepted Delivery Terms: FOB,CFR,CIF,EXW,DDU,Express Delivery; Accepted Payment Currency:USD,EUR,CAD,HKD,GBP,CNY; Accepted Payment Type: T/T,L/C,MoneyGram,Credit Card,PayPal,Western Union,Cash,Escrow;