What is the standard grade of the screws?

The screws are available in Grade 4.8 and 3.6, meeting GB standards.

304 St4.8 Bi-Metal Flat Head Roofing Self-Drilling Self-Tapping Screws

Name: 304 St4.8 Bi-Metal Flat Head Roofing Self-Drilling Self-Tapping Screws
Brand: Xiamen Xinhuixiong Hardware Co., Ltd.
SKU: 2098714155

Fujian, ChinaXiamen Xinhuixiong Hardware Co., Ltd.

US$0.05

5,000-9,999 Pieces

US$0.03

10,000+ Pieces

Sample price:US$250.00/piece.Request sample

Product profile

Customization

Available

Finish

Plain

Grade

4.8, 3.6

Model NO.

XHX-SC-F2

Head Type

Flat Head

Material

Steel

Standard

Groove

Cross

Connection

Common Bolt

Type

Flat

Head Style

Flat

Transport Package

PE Bag and Carton

Specification

ST4.8

Trademark

Customized

Origin

China

Production Capacity

50000 Piece/Pieces Per Month

Key features

Bi-Metal Construction: Made of 304 stainless steel with ST4.8 grade for high strength and rust-proof performance.

Flat Head Design: Flat head shape suitable for roofing applications, providing a smooth surface finish.

Customization Available: Accepts custom drawings or details for groove, connection type, and head style.

Free Sample Offer: Provides free samples for quality verification, customer only pays express cost.

Fast Delivery: Delivery time is generally 15 to 30 days depending on order quantity.

Quality Assurance: Uses high-quality raw materials from major steel factories with strict quality control.

Company profile

Xiamen Xinhuixiong Hardware Co., Ltd.

Fujian, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2011-06-07 CertifiedNearest Port: Xiamen PortAverage Response Time: ≤0.37h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryXiamen Xinhuixiong Hardware Co., Ltd. is identified primarily as a China-based private manufacturer/factory in Fujian, although another record describes the company type as a trading company, creating an entity-classification inconsistency. The supplier reports more than 10 production lines, 6–10 quality-control staff, and substantial stated output across springs, clips, chains, clamps, and racks. It reports ISO 9001 certification and annual ISO 9001/14001:2015 quality and environmental system audits by Bureau Veritas. Its product range covers power springs, constant-force springs, spring clips, chains, hose clamps, hardware stampings, and related mechanisms. Evidence indicates specialized design and production capability, 11–20 years of R&D engineering experience, and products requiring frequent testing and professional assembly. Export activity began in 2011, with 31%–40% of sales from exports and reported sales of dispenser products to the United States. Evidence is insufficient to assess after-sales...

Supplier typeThe supplier is explicitly listed as a Manufacturer/Factory, privately owned, and located in Xiamen, Fujian, China. However, a separate company record describes the company nature as a trading company, so the supplier’s formal business classification is inconsistent across the provided records.

CertificationsThe supplier reports ISO 9001 certification and states that Bureau Veritas audits its ISO 9001/14001:2015 quality and environmental management systems annually. This provides explicit evidence of recognized management-system certification and recurring external audit activity.

R&D capabilityThe supplier states that it has professional design and production capability for power springs, developed spring-loaded beverage dispensers and automatic up-and-down vending machines, and created a roller-blind driving device with a gravity-balance mechanism. It also reports 11–20 years of total R&D engineer experience, supporting a positive assessment of product-development capability.

Production capacityThe supplier reports more than 10 production lines, 6–10 quality-control staff, and stated high-volume output for spring clips, power or constant-force springs, chains, hose clamps, and elevating racks. Its described production environment, advanced equipment, and broad product output support strong production capability, although the records do not independently verify the reported volumes.

Client casesThe supplier states that it has started selling its beverage dispenser to customers in the United States and is communicating with US clients regarding roller blinds. This is direct evidence of at least one overseas market application, but the information does not identify customer names, order scale, duration, or independently verifiable case details.