High Strength 24x165 Rail Screw Spike Grade 5.6 Railway Sleeper Screw

Our 24x165 Screw Spike Grade 5.6 is a professional railway fastener manufactured with 35K carbon steel (35# steel) and paired with Fe6 spring washer, featuring hot-dip galvanized (HDG) surface treatment. With a fixed size of 24mm diameter and 165mm length, grade 5.6 strength, this screw spike is engineered for railway track fastening to secure rails, sleepers, and rail clips tightly. The screw thread design enhances anchoring force, while the Fe6 spring washer prevents loosening under long-term vibration. Strictly compliant with railway fastener standards, it provides stable, corrosion-resistant, and long-lasting performance.

In railway track operation, fastener stability directly affects driving safety. Ordinary straight-thread spikes have weak anchoring force and are prone to loosening under continuous train vibration, leading to rail displacement and potential safety hazards. Inferior materials and low-grade spikes are susceptible to bending, breaking, or thread slipping under heavy load. Without matching Fe6 spring washers, fastening tightness is insufficient, and lack of HDG finish results in rapid rust corrosion in outdoor environments—increasing maintenance frequency and replacement costs.

Our 24x165 Screw Spike Grade 5.6 with Fe6 Spring Washer HDG addresses these challenges effectively. 35K carbon steel and grade 5.6 strength ensure excellent toughness and load-bearing capacity, resisting bending and breaking. The unique screw thread design increases contact area with sleepers, enhancing anchoring force and preventing displacement under vibration. The matched Fe6 spring washer provides elastic preload, effectively preventing loosening during long-term operation. Hot-dip galvanized finish forms a thick, uniform protective layer, achieving superior corrosion resistance for outdoor, humid, and coastal railway environments.

• Railway track fastening: fixing rails, rail clips, and sleepers in main railway lines, suburban railways, and industrial railways
• Railway maintenance: replacement of old, damaged screw spikes to restore fastening stability
• Railway construction: new railway line laying, including high-speed railway auxiliary lines, freight railway, and urban rail transit
• Industrial railway: fastening of rails in factory workshops, mining railways, and port railway yards
• Outdoor railway infrastructure: railway bridges, tunnels, and coastal railway sections

The 24x165 screw spike adopts a screw thread structure, driven into pre-drilled holes of sleepers using professional tools. The screw thread increases friction and anchoring force between the spike and sleeper, preventing slipping or displacement under train vibration. The Fe6 spring washer is sleeved on the spike rod before nut installation; when tightened, the spring washer compresses to generate elastic preload, continuously applying pressure to the nut and effectively preventing vibration-induced loosening. The hot-dip galvanized surface layer isolates the 35K steel body from environmental elements, ensuring long-term stable performance.

• Confirm Size Matching: The 24x165 size is standard for conventional sleepers. Verify sleeper thickness and pre-drilled hole diameter compatibility.
• Strength Grade Confirmation: Grade 5.6 is standard for ordinary railway lines. Higher grades available for high-speed or heavy-load sections.
• Surface Finish Selection: HDG is default for outdoor use. Black oxide finish available for indoor industrial railways in dry environments.
• Accessory Matching: Must use matched Fe6 spring washer for anti-loosening effect; pair with standard nuts of corresponding size.