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Rail Fastening System

A rail fastening system is a means of fixing rails to railway sleepers or railroad ties. In general, a complete rail fastening system is consisted of rail anchors, rail tie plates, railroad spikes, chairs, track bolts and other rail fasteners. How to choose the most suitable rail fastening system for your railroad project? I think the overarching principle is the structural stability, which concerns the safety of railroad transportation.

Types of rail fastening systems

With the development of railway technology, various types of rail fastening systems have been designed to meet different requirements. Namely, there are 7 types of rail fastening systems, which include rail spike with base plate above the tie, E-clip Fastening, Pandrol Fast Clip Fastening, Tension Clamp Fastening, Bolt Clamp Fastening, Tack Joint and Chairs Fastening, and Steel Spring Keyed rail in Chair Fastening. These names may vary with different countries and regions.

SKL Clip rail fastening system

SKL clip rail fastening system.1
SKL clip rail fastening system.2
SKL clip rail fastening system.3
Technical Parameters for ONE unit of SKL Clip rail fastening system
Item included Pieces required Material Size Note
SKL tension clip 2 60Si2CrA, 60Si2CrA, 38Si7 skl1,skl3,skl12,skl14 Hardness: 42-47HRC 5 millions cycles without breaking. Standard: DIN17221, GB/T1222
Ss35 screw spike 2 Grade 4.6: Q235; Grade 5.6: 35# Grade 8.8: 45# M24×150mm Standard: ISO898-1, UIC864-1 and NF F500-50
Flat washer 2 Q235 Uls7 Standard: EN10025, EN10139
Plastic dowel 2 HDPE, Reinforced Nylon 66 (PA66) For different sizes of screw spike To insert into concrete sleeper
Guide plate 2 Reinforced Nylon 66 (PA66) UIC54, UIC60, 50kg rail, 60kg rail, and other sizes as ordered Customized products available
Rail pad 1 ML08AI  

E-Clip rail fastening system

E clip fastening system.1
E clip fastening system.2
E clip fastening system.3
Technical Parameters for ONE unit of E-Clip rail fastening system
Item included Quantity Material Size Remark
E clip 2 60Si2MnA, 60Si2CrA Dia. 16mm,18mm or 20mm (E1809, E2006,E2007,E2009,etc Hardness: 44-48HRC
Toe Load: Dia.16mm: 500-700kgf; Dia.18mm:750-900kgf; Dia.20mm:1100-1400kgf
Fatigue life: 5 millions cycles without breaking
Standard: DIN17221, BS970, GB/T1222
Shoulder 2 QT500-7, QT450-10 For UIC54, UIC60, 115RE, BS80lbs, BS100lbs, 50kg rail, 60kg rail, etc. Note: Hardness of E-clip is 44-48HRC;
Toe Load for E-clip is 500-700kgf (Dia.16mm);
750-900kgf(Dia.18mm); 1100-1400kgf(Dia.20mm);
Fatigue life of E-clip is 5 millions cycles
without breaking DIN17221, BS970, GB/T1222 qualified E-clip
Rail pad 1 HDPE, rubber or EVA
Insulator 2 Reinforced Nylon 66 (PA66)

KPO Clamp rail fastening system

KPO clamp fastening system.1
KPO clamp rail fastening system.2
KPO clamp rail fastening system.3
Technical Parameters for ONE unit of KPO Clamp rail fastening system
Item included Pieces required Material Type Note
KPO clamp 2 Q235 KPO3,KPO6,KPO9 Srandard:DIN5906
Screw spike 2 Grade 4.6: Q235 Grade 5.6: 35# Grade 8.8: 45# M24×150mm M24 ×160mm M24 ×180mm Standard: ISO898-1, UIC864-1 and NF F500-50
HS bolt 4 Grade4.6: Q235 Grade5.6: 35# Grade8.8: 45# HS26, HS32 Diameter: 22mm or 24mm. Length: 55mm, 65mm, 75mm, 90mm
Hex nut 2 Grade 5: 35# Grade 8: 45# As customized Standard: DIN985
Double coil spring washer 2 65Mn As customized Standard: UIC864-3
Base plate 1 Casting iron QT500-7, QT450-10, or forging low carbon steel or high carbon steel UIC54,UIC60, 50kg rail, 60kg rail,S49 in ordered size Standard: UIC864-6

Nabla Clip rail fastening system

Nabla clip rail fastening system.1
Nabla clip rail fastening system.2
Nabla clip rail fastening system.3
Technical Parameters for ONE unit of Nabla Clip rail fastening system
Item included Pieces required Material Size Note
Nabla clip 2 60Si2MnA, 60Si2CrA 4mm or 4.5mm thick 42-47HRC 3 million times without breaking; Application for different rail type
Insulator 2 Reinforced Nylon 66 (PA66)   Density:1.3-1.45g/cm3 Tensile strength:≥170Mpa Elongation:≤4.4% Bending Strength:≥250Mpa Impact Strength(No gap):≥80KJ/m2 Melting point:250-270℃ Insultion resistance:≥1X108Ω Glass fiber content:30-35% Hardness:≥110HRR
Screw spike 2 Grade5.6:35# UIC54,UIC60,50kg rail,60kg rail Tensile strength:≥500Mpa Yield strength:≥300Mpa Elongation:≥20% Cold bending:90 degree without crack
Spring washer 2 ML08AI 18.25x34x78mm Chemical composition(%): C:0.05-0.10, Mn:0.30-0.60, Si:≤0.1, Cr:≤0.2, P:≤0.035, S:≤0.035


1. What is the definition of ONE SET railway fastening system?

Generally speaking, ONE SET railway fastening system refers to the unit for one side of a sleeper of a single rail, i.e., 2 sets of fastening systems are needed for a single sleeper of a single rail, and 4 sets needed to fix a sleeper with rails.

2. Do you supply FREE samples of the rail fastening systems?

FREE samples can be supplied but the freight is paid by customer.

3. How is surface treatment for the fasteners?

We provide different coating service as per clients’ requirement: plain (oiled); paint with any color; oxide black; wax; bituminizing; DHG; electroplating zinc and others are available. plain and black oxide are all available.

4. What is the payment term?

We usually accept 30% prepayment, and the balance 70% against B/L copy within 5 working days after B/L date; flexible payment is negotiable.

5. What is the delivery time?

It depends. Delivery time can be as short as 10 days or less when moulds or goods are in stock. Otherwise, it may take 30-40 days to develop new products.

6. How do you guarantee the quality of fastening system?

A: We have passed the certification of CRCC in China and ISO9001:2008 overseas. We also accept third party test from clients.
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