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Track bolts are used to fasten rail ends together at a joint. The sizes of track bolts are varying with the requirements of the section of rail. The proper diameter and length of the track bolt can be determined by checking the applicable railway standard.
The track bolts can be classified into several types, such as, Button head oval neck track bolt, Diamond neck track bolt, Rail bolt NF F50-008, Fish bolt, Track bolt of Russian standard, Clip bolt, Clamp bolt and inserted bolt for Russia, , anchor bolt, T-bolt clamp and other special bolts, etc.
Application Criteria of Track Bolts
According to related rail standards, each 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 the bolts.
Bolts in use have to be in the proper size and tightly in place.
Bolts have to be installed with AREMA spring washers whereas the nuts have to be installed against the spring washer.
Bolts have to be installed and the nuts have to installed alternately on the inside and outside of the rail.
When 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 rails where all bolts are missing or ineffective
Track Bolts
The parameters of Our Track Bolts are presented in the following for your reference:
| Button head oval neck track bolt |  | Material: Carbon steel Grade: 8.8 10.9 Size: Dia. M5-M42 Surface: zinc plated |
| 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. |
