Fish Bolt Definition:
The fish bolt fixes the rail fish plates on the steel rails for fixing. It is usually made of high carbon steel.
Fish Bolt Features:
1. Fishtail bolts are usually used together with rail fishplates
2. The size of fishtail bolts must be changed according to the requirements of the rail
3. Fishtail bolts must have sufficient strength to avoid pinching and bending
4. Nylon dowels are sometimes used to reduce vibration.
Fishtail Bolt 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
If the buyer provides drawings or samples, non-standard OEM can be provided.
| Grade | 4.6 | 5.6 | 8.8 | 10.9 |
| Material | Q235 | 35# | 45# | 40Cr |
|
Mechanical
properties
|
Tensile strength: ≥400Mpa | Tensile strength: ≥500Mpa | Tensile strength:≥800Mpa | Tensile strength: ≥1000Mpa |
| Yield strength:≥240Mpa | Yield strength:≥300Mpa | Yield strength:≥640Mpa | Yield strength:≥900Mpa | |
| Elongation:≥22% | Elongation:≥20% | Elongation:≥12% | Elongation:≥9% | |
|
Cold bending:
90 degree without crack
|
Cold bending:
90 degree without crack
|
Cold bending:
90 degree without crack
|
Cold bending:
90 degree without crack
|
Fish Bolt Type:
There are two types of fish tail bolts most commonly produced: round head oval neck fish tail bolts and diamond neck fish tail bolts
1. Round head oval neck fishtail bolts
| Diameter | 1/2" | 1/2" | 1/2" | 5/8 | 3/4 | 3/4 | 3/4 | 7/8 | 7/8 | 1 | 1 | 1 | 1-1/16 | 1-1/8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length | 1-3/4" | 2" | 2-1/4 | 2-1/2 | 3 | 3-1/2 | 4 | 4-1/2 | 5 | 5 | 5-1/2 | 6 | 6 | 6-1/2 |
| Weight (Kg) | 0.097 | 0.1 | 0.112 | 0.183 | 0.328 | 0.339 | 0.356 | 0.559 | 0.593 | 0.8 | 0.839 | 0.879 | 0.995 | 1.186 |
2. Diamond neck fishtail bolts
| Diameter | Length | Weight (Kg) |
|---|---|---|
| 7/8 | 4-1/2 | 0.563 |
| 7/8 | 5-1/2 | 0.651 |
| 1 | 5-1/4 | 0.889 |
| 1 | 5-3/4 | 0.895 |
| Note: All fish bolt dimensions given in inches | ||
3. Russian standard fish bolt
Size: 27x160
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
Inquiry Now