DIN7504K Countersunk Head Self Drilling Screw Zinc Plated Carbon Steel

DIN7504K Countersunk Head Self Drilling Screw Zinc Plated Carbon Steel is a precision metal fastener fully manufactured according to German DIN7504K standard. This fastener combines drilling, tapping and fastening into one component, removing the need for pre-drilling holes required by traditional fasteners. The cross recess countersunk flat head can fully sink into thin metal plates after tightening, achieving a flush workpiece surface without protruding parts. The high-hardness drill tip quickly penetrates thin steel sheets and metal profiles to raise assembly efficiency. Made by Ningbo Gangtong Zheli Fasteners Co., Ltd, this product undergoes standardized molding and surface treatment to guarantee stable batch quality.

Material & Standard Specification

This fastener uses premium carbon steel and 410 stainless steel as raw materials selected after strict incoming component inspection. The carbon steel version adopts fine electro-galvanized treatment, forming a compact, uniform and bright zinc protective layer on the fastener surface to resist rust and oxidation under normal atmospheric conditions. Full production and inspection follow DIN7504K, covering dimension tolerance, thread precision, drill tip hardness and tensile strength, to guarantee consistent mechanical performance for every finished fastener.

Ningbo Gangtong Zheli Fasteners Co., Ltd can supply complete inspection documents for every batch of DIN7504K Countersunk Head Self Drilling Screw Zinc Plated Carbon Steel. Available reports include MTC material test report, dimensional inspection report, mechanical performance test report, factory COA certificate and salt spray report. All documents support customer on-site audit and third-party verification, fully satisfying strict quality audit and procurement requirements of global industrial purchasers and engineering buyers.

Standard Size Specification Table

Product Core Performance Advantages

The countersunk flat head design prevents screw head protrusion after installation, keeping workpiece surface smooth and avoiding collision interference with surrounding components. The integrated high-hardness drill tip provides strong penetration for thin steel plates, completing drilling and locking in one step, cutting labor cost and shortening construction time.

Precision uniform threads form tight engagement with metal workpieces to prevent loosening and tooth damage for long-term use. The galvanized coating adheres firmly and resists mild humid corrosion, extending service life. The fastener balances hardness and toughness, avoiding breakage or deformation during drilling and tightening.

Product Parameter Comparison

DIN7504K Countersunk Head Self Drilling Screw is equipped with integrated sharp drill tip to realize one-step drilling fastening without pre-drilling, while ordinary self tapping screw has no drill tip and requires pre-drilling and secondary tapping.

For head structure, DIN7504K Countersunk Head Self Drilling Screw adopts cross recess countersunk flat head for fully embedded installation. Ordinary self tapping screw only has ordinary countersunk head without embedded optimization.

In terms of installation effect, DIN7504K Countersunk Head Self Drilling Screw can stay flush with workpiece surface without protrusion. Ordinary self tapping screw can achieve flat surface but needs multiple working steps.

When it comes to construction efficiency, DIN7504K Countersunk Head Self Drilling Screw supports one-step operation to save labor and time. Ordinary self tapping screw needs multiple procedures and leads to low assembly efficiency.

As for corrosion resistance, DIN7504K Countersunk Head Self Drilling Screw has uniform zinc plating with good anti-rust performance. Ordinary self tapping screw only has simple surface treatment and weak corrosion resistance.

Wide Application Scenarios

DIN7504K Countersunk Head Self Drilling Screw Zinc Plated Carbon Steel suits multiple industrial and construction applications, widely used for metal roofing, wall panel installation, light steel structure, thin steel plate connection, electrical cabinet assembly and metal profile splicing. This fastener can deliver stable fastening performance when connecting thin metal sheets, and the countersunk head design keeps the surface neat and flat after installation, which is highly valued for projects requiring smooth outer surfaces.

This fastener adapts to indoor, outdoor and mild humid environments. Metal processing factories, construction contractors and electrical equipment manufacturers globally select this product for long-term bulk procurement. The complete size range of DIN7504K Countersunk Head Self Drilling Screw Zinc Plated Carbon Steel meets bulk order and customized matching demands for different project thickness and load requirements.

Advantages of Choosing Ningbo Gangtong Zheli Fasteners Co., Ltd

Ningbo Gangtong Zheli Fasteners Co., Ltd is a professional fastener manufacturer integrating R&D, production and sales, with fully automated production lines and independent professional quality inspection lab. Ningbo Gangtong Zheli Fasteners Co., Ltd has accumulated years of rich experience in manufacturing standard and non-standard fasteners, and maintains stable long-term cooperation with purchasers from different regions all over the world.

Full quality control runs from raw material incoming inspection, production monitoring to finished goods testing. Every batch of DIN7504K Countersunk Head Self Drilling Screw Zinc Plated Carbon Steel passes strict dimension, hardness, tensile force and coating inspection before delivery. The factory supports custom length, special surface treatment and personalized packaging solutions, provides flexible MOQ and stable fast lead time for bulk orders. Complete official certificates and test reports are available for all orders to effectively reduce procurement risk for global buyers.

FAQ

Q1: What is the executive standard of this self-drilling screw?

A: Products are manufactured and inspected strictly according to German DIN7504K standard, with accurate dimensions and stable mechanical performance.

Q2: What material options are available?

A: Carbon steel zinc plated and 410 stainless steel. Carbon steel version is cost-effective for normal environment; 410 stainless steel offers better corrosion resistance for humid conditions.

Q3: What reports and certificates can you provide?

A: MTC material test report, dimensional report, mechanical test report, COA factory certificate and salt spray test report, all available for customer audit.

Q4: Can you customize specifications and packaging?

A: Yes. Custom length, surface treatment and printed carton packing can be arranged to meet different project demands.

Q5: What are the main application scenarios?

A: Metal roof, light steel structure, thin metal plate assembly, electrical cabinet and mechanical equipment shell fixing.

Packaging & Shipment

All DIN7504K Countersunk Head Self Drilling Screw Zinc Plated Carbon Steel are packed in standard industrial cartons with inner waterproof and moisture-proof protective film, which can effectively prevent rusting, scratching and product damage during long-distance sea or land transportation. Custom carton logo, product specification marks and shipping marks are acceptable according to customer’s requirements. After carton packing, all cartons will be neatly stacked and fixed on export pallets with wrapping film and binding straps for sea shipment, greatly improving packaging stability and avoiding cargo collapse during transit.

Ningbo Gangtong Zheli Fasteners Co., Ltd takes advantage of convenient logistics conditions of Ningbo port, offering flexible shipping options including sea freight, air freight and international express delivery. The factory arranges shipment strictly according to customer’s order schedule and required delivery time. Full logistics information can be tracked in real time, helping customers monitor cargo status and ensure safe and on-time delivery to destination.