Square Head Lag Track Bolt
Track bolts, also called fang bolts or rail anchor bolts, are used to fix steel rails and rail chairs torail tie plates, or to fastenrail jointsto link rails. In most cases, when building a new railway system, the track anchors are made of concrete instead of traditional wood. In order to fix the track to the concrete anchor, the track must be fixed into the concrete by using mounting brackets that hold the rails of the track in place. Before installing the rail on the mounting bracket, the mounting bracket must be anchored to the concrete. This is done by using dedicated track bolts.
| Available Material: |
1.StainlessSteel:SS201,SS303,SS304,SS316, SS410, SS420, 4.8 steel hex bolt 2.Steel:C45(K1045), C46(K1046),C20 3.Carbon Steel:CH1T,ML08AL,1010,1035,1045 4.AlloySteel:10B21,35ACR,40ACR,40Cr,35CrMn,SCM435 5.Aluminum or Aluminum Alloy:Al6061,Al6063 etc |
| Grade: | 4.8, 8.8, 10.9, 12.9. |
| Finished: | Zinc-plating, Geomet, Dacromet, Black Oxide, Phosphatizing, Powder Coating and Electrophoresis. |
| Standard: | ISO, DIN, ANSI, JIS, BS and Non-standard. |
| Certificate: |
GB/T19001-2008/ISO9001:2008 It can match ROHS,SGS and environment protection |
| Manufacture Process: | Raw Material/QC/Heading/Thread/HeatTreatment/Surface Treatment/QC Inspection/Sorting and Packing/Shipping |
| Sample Service: | Samples for standard stainless steel fasteners are all in free. |
| Lead Time: | 10-20days after order confirmed |
| After-sales Service: | We will follow up every customer and solve all your problems satisfied after sales |
Because of the weight that the track of any track system must bear at any given time, the anchoring system must be as strong as possible to prevent any possibility of displacement. As a result, most of the mounting brackets and track bolts are made of hardened steel. The steel has been treated to prevent it from rusting. These mounting systems using track bolts are installed and directly anchored to the track anchors, regardless of whether the track is made of concrete, wood or other materials.
The track bolts themselves include not only threaded bolts. Track bolts are usually three-part fasteners, including bolts, lugs or nuts, and lock washers. The washer prevents the track bolts from shifting or loosening due to strong vibration caused by passing trains.
Place the nut on the mounting bracket, on the faucet into which the bolt is screwed, while placing the washer on top of the lug. The mounting bracket and the lug have opposite teeth, which when engaged with each other, can prevent any slippage during the tightening process. After applying the lock washer to the top of the lug, align the bolt with the center of the lug, and then drive it into the anchor of the track through the screw hole in the mounting bracket. Once the lock washer is engaged with the bolt, it can prevent the bolt from slipping or twisting.
As the track bolts are fastened and fixed into the track anchor by the mounting bracket, the fixing pin or track pin held by the mounting bracket is pulled down. Then, it applies pressure to the bottom flange of the rail. This is the most common method of fixing the track to the fixed anchor of the track system.
Track bolts can be divided into several types, such as, button head oval neck track bolt, diamond neck track bolt, rail bolt NF F50-008, fish bolt, Russian standard track bolts, clip bolt, clamp bolt and inserted bolt for Russia, , anchor bolt, T-bolt clamp and other special bolts, etc. For fastening flat-bottomed rails, an upper-lipped washer can be used to grip the edge of the rail. They are more resistant to loosening by vibrations and movement of steel rails. In actual use, they are more effective than track spikes and screws and so are used in positions such as switch (point) tie plates and on sharp curves.
Parameters of track bolts are presented as follows
Button head oval neck track bolt
Material: Carbon steel
Grade: 8.8 10.9
Size: Dia. M5-M42
Surface: zinc plated
Types: BS standard, R54 rail in Indonesia,AS1085.4-1999,
Russian standard, AREMA standard, etc.
Diamond neck track bolt
Material: Q235, 35#, 45#
Grade: 4.6, 5.6, 8.8 10.9
Standard: UIS864-2
Surface: plain (oiled), Oxide black, Zinc, HDG, wax, bitumen,
Dacromet, Sherardizing
Rail bolt NF F50-008
Material: Q235, 35#, 45#,, 40Cr
Grade: 4.6, 5.6, 8.8 10.9
Certificate:ISO9001:2008
Surface: plain (oiled),
Oxide black, Zinc, HDG
Clip bolt with BSW thread
Material: Q235, 35#, 45#, 40Cr
Grade: 4.6, 5.6, 8.8, 10.9
Certificate:ISO9001:2008
Fish bolt used for rail joints (with railnuts and spring washers)
Material: Q235, 35#, 45#,, 40Cr , C45
Grade: 4.8, 8.8, 10.9 Size: 22×135, 24×135, 24×145
Surface: plain (oiled), Oxide black, Zinc, HDG
Types: BS standard, R54 rail in Indonesia, AS1085.4-1999,
Russian standard, AREMA standard, etc.
Clip bolt HS26 & HS32
This type of bolt is used to connect base plates and
rail clamps together with nuts and washers.
Two types of clip bolts are available: with square neck or without neck.
Standard: UIS864-2
Material: Q235, 35#, 45#
Grade: 4.6, 5.6, 8.8
Standard: UIC, GB, BS, DIN and GOST or ISO, etc.
Surface: Plain, black painting or upon customer requirement
For rail types: M20 X 60 30Kg rail, M20 X 75 30Kg rail,
M22 X 66 40Kg rail, M22 X 80 48Kg rail, etc.
Clamp bolt and inserted bolt for Russia
Material: Q235, 35#, 45#
Grade: 4.6, 5.6, 8.8
Size: M22 ×75, M22 ×175
Surface: Plain, black painting or upon customer requirement
Anchor bolt
We produce rail anchor bolt for concrete sleeper
rail fastenings or for crane rail fastening systems.
Material: Q235 Grade: 4.6, 5.6, 8.8
Surface: Plain, black painting or upon customer requirement
Type: L type,J type, I type, curve bolt,
or the type by customers’ drawings
T-bolt
Material: Q235, 45#
Standard:GB37-88
Size: M5-48
Grade: 4.6, 5.6, 8.8, 10.6, 12.9
Surface: Natural or according to customers' requests
Special bolt
Material: Q235, 35#, 45#
Grade: 4.6, 5.6, 8.8
Surface: Plain, black painting or upon customer requirement
Tunnel bolt
Type :available by customers drawings and samples .
Surface: plain (oil ) black.zin .HDG etc
Class:4.6.4.8.8.8.10.9.
Types: Square flange bolts with round thread, special curve bolt,
spear bolts with special pitches, etc.
Application factors of track bolts:
According to the standards of steel rails, each rail joint needs to be bolted with at least two bolts in each rail tightened to approximately 400 foot-pounds of torque which develops between 25,000, and 30, 000 pounds of tension in track bolts.
Track bolts in use have to be in the proper size and tightly in place.
Track bolts have to be installed with AREMA spring washers whereas the nuts have to be installed against the spring washer.
Track bolts have to be installed and the nuts have to install alternately on the inside and outside of the rail track.
When track bolts and joint bars are moved away, the joint area of the rail and the contact surface of the joint bar have to be cleaned and the joint bar and the bolt threads have to be lubricated.
Safety standards require that on operation are permitted over rail tracks where all bolts are missing or ineffective
Ruika a professional and leading manufacture of all kinds of standard and non-standard fasteners
Our company has purchased steel from several large steel groups , such as Shanghai Bashan Steel Mill, Beijing Shrugging Steel Mill whose steel have good mechanical properties and stability of chemical component. it keep the bolt to be of high strength
First, we have our own High-precision Digital Machining center for mould making in special Mould Workshop, excellent mould make product beautiful appearance and its size accurately.
The second, we adopt blasting procession, removing Oxidation surface , make the surface to be bright and clean and uniform and beautiful.
The third, in heat treatment: We use the Controlled-atmosphere Automatic heat treatment Furnace, we also have four mesh belt convey furnaces, Can deal with the products in different sizes keeping the non-oxidation surface
The quality control is strictly performed from buying raw materials in warehouse to different machining procession and to final packing. We have Magnetic Powder Detector, Material Testing Machine, Metallographic Microscope, such testing instruments, guarantee product high quality and beautiful appearance.
Ruika specialize in manufacturing all kinds of rail fasteners. The main products includes:Rail Clips, Rail fastening system,Bolts, Nuts, Tunnel Bolt, Washers,Screw Spikes, Rail Tie Plat etc for Railway, Metro, Iron Towers in the field of power industry.
We have abundant technical force,technology innovation,scientific management,and good management.We welcome all interested companies and people contact us for business discussion.We hope to establish a long-term relationship with you for common growth and success.
Q: Are you trading company or manufacturer ?
A: We are a factory.
Q: How long is your delivery time?
A: Generally within 25-30 days for a 20ft container after the prepayment received.
Q: What is your terms of payment ?
A: 30% of the payment in advance , the balance before shippment via T/T.
Q: Will that be possible for us to receive pieces of samples for approval?
A: Sure. The samples can be supplied for free but the freight counts on you.
Q: What's the packing way?
A: Bundled in steel strips with iron/wood pallets.
Q: How long will it be the quotation valid?
A: The validity is 15 days in general, but also depends on the quantity and special conditions. It will be shown in every quotation.
Q: What is MOQ?
A: 20’’ container in general, depending on whether enough stocks available for small quantity; customized products accepted.
Q: Do you have any certifications regarding Track Bolts?
A: We have passed the certification of CRCC in China and ISO9001:2008 overseas. Before shipment, Certificate of Quality can be supplied. We also accept Third Party Inspection from clients, with free samples to supply.
If you have any questions, pls feel free to contact us as below:
Web: Email:
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