Railway Screw 24x170

The 24x170mm railway screw spike (also known as a sleeper screw or rail screw) is an extended, heavy-duty track fastener engineered for mainline high-speed networks, heavy-haul lines, and high-vibration turnouts. The dimensions define its robust footprint: an M24 nominal thread diameter combined with an extra-long 170mm shank. Anchored into pre-drilled wooden ties or cast into concrete sleepers via plastic dowels, its extended length delivers maximum vertical anchorage and extreme pull-out resistance under punishing dynamic train loads.

Key Features & Technical Specifications

· High-Torque Drive Head: Features a robust rectangular or square head designed to withstand high mechanical torque from automated hydraulic spike-driving machinery.

· Deep Coarse Threads: Specialized thread geometry maximizes surface area contact, providing up to three times the pulling resistance of a traditional cut spike.

· Enhanced Penetration Depth: The 170mm length provides deeper subgrade anchoring, making it ideal for thick heavy-haul baseplates and structural turnouts.

· Global Track Standards: Manufactured in accordance with strict international railroad benchmarks including UIC, DIN, BS, AREMA, and GOST.

· High-Tensile Materials: Forged from structural carbon steel or alloy steel (such as Q235, 35#, or 45#) in high-strength mechanical property grades (e.g., 5.6, 8.8).

· Corrosion Protection: Coated with Hot-Dip Galvanizing (HDG), Dacromet, or black oxide to survive brutal weather exposure, moisture, and track vibrations.

Custom Railway Screw Manufacturing by Signum

Kunshan Signum Machinery Technology Co., Ltd manufactures premium M24 screw spikes customized exactly to your client-provided drawings, precise tolerances, and material criteria.

Why Partner with Signum?

· OEM Drawing Alignment: We forge custom thread pitches, length variations, and head dimensions matching your exact technical blueprints.

· High-Throughput 2-Shift Fleet: Our facility operates on a 2-shift workforce to maintain constant uptime, fast production turnarounds, and massive volume scalability.

· Rigorous Quality Control Team: Expert in-house QA inspectors manage full steel heat traceability, thread-go gauge testing, and dimensional compliance.

· 3rd-Party Inspections Welcomed: To ensure zero-defect distribution, we fully support pre-shipment quality verification from accredited bodies like SGS, Bureau Veritas (BV), or your own inspectors.

Complete Rail Fastener Catalog

Beyond the 24x170mm sleeper screw, Signum supplies a full suite of critical track infrastructure components:

· Custom Screw Spikes: Available in alternative thread shapes, drive heads, and lengths (e.g., Ss series, ASTMA66).

· Dog Spikes / Cut Spikes: Forged in an array of imperial and metric sizes (including 14x14x130mm and 16x16x165mm).

· Track Fastening Systems: Elastic rail clips (E-clips, SKL clips), heavy-duty track bolts (such as HS32 variants), tie plates, plastic dowels, and resilient rubber pads.

Contact Signum for a Quick Quote

Procure precision-threaded, high-performance rail screws built for demanding modern track environments.

To receive a quick quote, please reply with your target order volume, destination port for shipping terms, or attach your technical engineering drawings. Let us know how we can best support your manufacturing timeline.