Railway Bolt

Rail-fasteners

Track bolts, also called fang bolts or rail anchor bolts, are used to fix steel rails and rail chairs to rail ties, or to fasten rail joints to link rails. The track bolt is a bolt inserted through a hole in rail tie with a fanged nut that embeds into the lower surface of the tie. In general, the size of track bolts varies from requirements of the rail sections. The proper diameter and length of the track bolt can be determined by checking the applicable railway standards.

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.

Types of track bolts Parameters of track bolts are presented as follows 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

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.