Fish bolt and nut are used to connect the ends of the rail with the help of rail joints. According to the rail standard, at least two fishtail bolts are required for each rail joint, and the fishtail bolts should be in the proper size and position.
Fish bolts are usually used with spring washers and nuts to fasten the rails. The size of fish bolt and nut changes with the change of rail or fish plate.
Fish Bolt and Nut Specifications:
Standards: GB, DIN, ISO, ANSI/ASTM, B7, BS, JIS, etc.
Grade: 4.8, 6.8, 8.8, 10.9, 12.9
Material: Q235, 45#, 40Cr, 20Mntib, stainless steel, etc.
Size: M12-M24 or according to customer requirements
Length: 45mm-145mm or according to customer requirements
Surface: plain, black, galvanized or according to customer requirements
Purpose: Used to fix the rail fish plate on the railway.
If the buyer provides drawings or samples, non-standard OEM can be provided.
|Model||Specification||Material||Unit weight||Surface Treatment|
|M24*135 Fish bolt||Q235||0.65kg/pc||Plain or according to the requirement of customers|
|AREMA Fish bolt||7/8”*5-1/2”||45#||0.417kg/pc||Plain|
|AREMA Fish bolt||1”*5-1/4”||45#||0.579kg/pc||Plain|
|AREMA Fish bolt||1”*5-3/4”||45#||0.621kg/pc||Plain|
|AREMA Fish bolt||1”*5-7/8”||45#||0.631kg/pc||Plain|
The most commonly produced fish tail bolt types: round head oval neck fish tail bolts and diamond neck fish tail bolts
1. Round head oval neck fishtail bolts
2. Diamond neck fishtail bolts
|Note: All fish bolt dimensions given in inches.|
Other fish bolt types and details
3. Russian standard fish bolt
Material: Tensile stress 381KN
Standard: GOST 11530
Surface treatment: Ordinary oiling
4. Square head fishtail bolt
Size: M20, L to order
Grade: 4.6, 5.6
Standard: DIN5903-2 Type B
Surface treatment: galvanized, hot-dip galvanized