Trade Discount 20%
ASSY® 4 HCR 1.4539 CS Stainless Steel Screw | Highly Corrosion Resistant | Partial Thread Countersunk Head | @Pack of 250 | by Wurth
ASSY® 4 HCR 1.4539 CS stainless steel screws are designed for outdoor use, featuring a highly corrosion-resistant 1.4539 material and a partial thread with a countersunk head. Ideal for timber construction and marine environments, these screws ensure optimal performance with their RW20 internal drive and smooth thread start, making them perfect for wood fastening applications.
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Product Name/Title: ASSY® 4 HCR 1.4539 CS Stainless Steel Screw | Highly Corrosion Resistant | Partial Thread Countersunk Head | @Pack of 250 | by Wurth
Brand: Wurth
SKU: 18794060
Alternatively Known As: Stainless steel wood screw, corrosion resistant screw, countersunk head screw, HCR screw, 1.4539 stainless screw
Technical Specifications
- Nominal diameter: 4 mm
- Length: 60 mm
- Head type: Countersunk head
- Head diameter: 8 mm
- Head height: 2.5 mm
- Internal drive: RW20
- Thread type: Wood screw thread
- Thread design: Partial thread
- Thread form: Single start thread
- Thread length: 39 mm
- Core diameter: 2.5 mm
- Tip shape: Tip with hilltop milling cutter
- Tip angle: 28 degrees
- Material: Stainless steel 1.4539 (X1NiCrMoCu25-20-5)
- Surface finish: Plain
- Min/max screw-in angle: 0-90 degrees
- Product weight per item: 3.376 g
- Suitable materials: Wood, derived timber product, softwood, plywood, hardwood, LVL
- Suitable machines: Würth BS 14-A Combi
- Approval: ETA-11/0190
- RoHS-compliant: Yes
- Dimensions (H x L x W): 2.5mm x 60mm x 8mm
- Weight: 0.0034 kg
Key Features
- Made of high-quality austenitic HCR stainless steel 1.4539 with corrosion resistance class IV
- Partial thread wood screw with countersunk head for wood-wood fastening
- RW20 internal drive for ideal power transmission and fewer bit changes
- Reinforced asymmetrical thread flank geometry for higher power transmission in hardwoods
- Smooth thread start reduces screw-in force and splitting effect
- Non-magnetic, non-rusting stainless steel suitable for high chloride or SO2-contaminated areas
- Tip with hilltop milling cutter and 28° tip angle for optimized recessing and biting
- Pulls together without head milling due to lack of milling elements below the head
- Perfect fit of 90° head in metal countersinks
Professional Installation Requirements
- Recommended installation with Würth BS 14-A Combi machine or equivalent for optimal performance.
Applications
- Outdoor use in facades, wet areas, timber construction
- Ocean climate environments
- Play equipment, boardwalks, terraces, fences
- Suitable for wood, derived timber products, softwood, plywood, hardwood, LVL
Standards & Compliance
- Complies with AS/NZS 1170 – Structural Design Actions (Wind, Earthquake, Snow Loads) for construction fasteners
Environmental Benefits
- Corrosion resistance extends product life reducing replacement frequency and waste
- RoHS-compliant ensuring reduced hazardous substances
- Suitable for outdoor and marine environments minimizing environmental impact
Warranty Information
Warranty details available upon request from Wurth; product approved under ETA-11/0190.
Available Now
Available for immediate purchase, ideal for outdoor timber construction, marine, and high corrosion environments.
