What is the hardness of the screws?

The surface hardness is 550-700HV and the core hardness is 300-450HV, with a grade of 12.9.

Are samples available?

Yes, samples are provided for free.

What payment terms do you accept?

We accept LC (Letter of Credit) and T/T (Telegraphic Transfer).

Deck Screw Torx Screw Chipboard Screw Flat Head Countersunk Ruspert or Dacromet

Name: Deck Screw Torx Screw Chipboard Screw Flat Head Countersunk Ruspert or Dacromet
Brand: QINGDAO ZONGYU INDUSTRY AND TRADE CO., LTD.
SKU: 2033827552

Shandong, ChinaQINGDAO ZONGYU INDUSTRY AND TRADE CO., LTD.

US$0.60-1.00

50,000 Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel

Type

Round Head

Model NO.

deck screw

Groove

Torx

Connection

Common Bolt

Head Style

Counter Sunk Bolt

Standard

DIN, GB, ANSI, BSW, JIS, GOST, SGS

Grade

12.9

Usage

Metal and Wood

Head

Round / Hex/ Countersunk

Finish

Customized

Poin

Cutting/Selfing Tapping

Transport Package

Carton Package

Specification

SGS

Trademark

Origin

China

HS Code

7318140090

Production Capacity

1000ton/Month

Key features

Type 17 Drilling Point: Self-drilling tip with 45-degree thread angle for reliable connection in wood and chipboard.

OEM and Customization: OEM available based on drawings or samples; finish and head style are customizable.

High Hardness Grade: Grade 12.9 with surface hardness 550-700HV and core hardness 300-450HV.

Multiple Head Styles: Available in flat, pan, hex, truss, button, round, slice, and oval heads.

Durable Surface Treatment: Options include phosphated, zinc plated, Ruspert, Dacromet, and HDG with 24H-96H salt spray test.

Factory Direct Supply: Direct factory price with professional testing and quality control for competitive pricing.

Wide Material Range: Available in carbon steel and stainless steel grades 201, 304, 316, and 410.

Flexible Packaging: Bulk, small box, plastic bag, or plastic box packing available as customer requirements.

Company profile

Importers and ExportersHigh Repeat Buyers ChoicePatents AwardedNational Award received

QINGDAO ZONGYU INDUSTRY AND TRADE 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 CertifiedExport Year: 5 years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤3.20h

AI-Powered supplier vetting

SummaryThe supplier is a Qingdao-based manufacturer and trading company with a broad registered business scope covering mechanical equipment, metal products, automotive parts, plastic products, building materials, and import/export activities. It reports ISO 9001, 14001, and 18001 certification history, eight production lines, 50 quality-control staff, and stated production capacity for several nail categories. The supplier offers customization from designs and samples, ODM, and OEM services for well-known brands. However, it reported no new products in the past year, lacks overseas warehouses, showrooms, agents, or branches, and has weak documented service-management controls: no written service-assessment or corrective-action procedures and no complaint-handling records. Financial information is identified for 2021–2023, but the slices do not provide performance values, so financial credibility cannot be fully assessed.

Supplier typeThe supplier operates as a manufacturer and trading company: its registered scope includes sales and import/export activities, while its factory information reports eight production lines and product-specific output. Its company description also states more than 20 years of development and business relationships across Europe, America, Southeast Asia, and Africa.

CertificationsThe supplier states that it passed ISO 9001, ISO 14001, and ISO 18001 international management-system certifications in 2001. This is explicit certification evidence, although the slice does not provide current certificate validity or renewal details.

After-Sales capabilityThe supplier has a complaint-handling procedure but no written complaint records, and it lacks written procedures or records for service-capability assessment and corrective/preventive actions. It has participated in the Canton Fair but reports no overseas warehouses, showrooms, agents, or branches, limiting evidence of structured overseas after-sales support.

R&D capabilityThe supplier reports ODM capability, an available SDK, and one internationally recognized design award. However, it also states that no new products were developed in the past year; this indicates some design and development resources but limited recent product-innovation evidence.

Production capacityThe supplier reports eight production lines, 50 quality-control staff, and stated annual outputs of 10,000 tons each for U-type, roofing, twisted, clout, and common nails. It also reports a one-month average lead time in both peak and off-season, supporting evidence of established production capacity, though the stated output figures are supplier-reported and not independently verified.

Customization capabilityThe supplier explicitly provides customization from customer designs and samples, ODM services, and OEM services for well-known brands. These statements directly demonstrate multiple forms of customization and contract-manufacturing capability.