Fish Bolt
The Fish Bolt, also known as a rail joint bolt or track bolt, is an essential component in railway fastening systems. It is specifically designed to securely fasten fish plates (joint bars) to the ends of steel rails, ensuring stable and continuous rail connections. Manufactured by Wuxi Lanling Railway Equipment Co., Ltd., our Fish Bolts are engineered for high strength, corrosion resistance, and long-term performance under heavy loads and harsh outdoor conditions...
- Product Introduction
Lanling specializes in offering premium railway fish bolts in a range of sizes that satisfy international standards, including ISO, JIS, and ASME, and can be used on a variety of standard tracks. In order to provide a comprehensive connection solution for railroad tracks, our product line also includes associated nuts, washers, and fish plates. Additionally, we may create product samples based on any bespoke drawings that clients supply to guarantee that the finished product completely satisfies their particular needs.
| Grade |
4.8, 6.8, 8.8, 10.9, 12.9 |
| Model |
Φ14×70, Φ16×75, Φ18×90, Φ20×90, Φ22×135, Φ24×135, Φ24×145, Φ24×170, etc. |
| Standard |
GB, DIN, ISO, ANSI/ASTM, B7, BS, JIS etc |
| Material |
Q235, 45#, 40Cr, 20Mntib, stainless steel, etc |
| Surface Treatment |
Plain, black, zinc-plated, or according to the customers' requirements |
Technical Parameters Of Rail Fish Bolt
|
Railway Fish bolt |
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|
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 |
|
|
Surface |
plain (oiled), Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing |
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|
Standard refers |
UIC864-2 |
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Hot Selling Rail Fish Bolts
High-Strength Fish Bolts
Physical properties of high-strength fish bolts：
|
Tensile Strength |
Yield Strength |
Elongation |
|
800Mpa |
640Mpa |
12% |
Button Head Oval Neck Fish Bolt
|
Diameter |
Length |
Weight (Kg) |
|
1/2″ |
1-3/4″ |
0.097 |
|
1/2″ |
2″ |
0.10 |
|
1/2″ |
2-1/4 |
0.112 |
|
5/8 |
2-1/2 |
0.183 |
|
3/4 |
3 |
0.328 |
|
3/4 |
3-1/2 |
0.339 |
|
3/4 |
4 |
0.356 |
|
7/8 |
4-1/2 |
0.559 |
|
7/8 |
5 |
0.593 |
|
1 |
5 |
0.8 |
|
1 |
5-1/2 |
0.839 |
|
1 |
6 |
0.879 |
|
1-1/16 |
6 |
0.995 |
|
1-1/8 |
6-1/2 |
1.186 |
Diamond Neck Fish 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 are given in inches. |
Questions About Fish Bolt Installation
What Should Be Paid Attention To When Installing Fish Bolts And Fish Plates?
The contact part of the fish plate with the rail and the bolts should be oiled.
When inserting fish bolts, the nuts must be staggered inside and outside.
The procedure for bolting, if using a four-hole fish plate, first tighten the two in the middle, then the two on the sides, and after tightening the two sides, tighten the two in the middle again.
When tightening the fish bolts, one person should use a 55 cm screw wrench. Do not use a screw wrench that is too long or two people to tighten.
When the fish bolts cannot be put on, use a hammer to hit the two ends of the fish plate to align the eyes. Do not use a hammer to force the fish bolts in.
Why Choose Lanling Railway
Quality Control
At Wuxi Lanling Railway Equipment Co., Ltd., every fish bolt undergoes strict quality inspection for hardness, tensile strength, thread accuracy, and coating thickness.
We implement ISO 9001:2015 quality management system and ensure compliance with AREMA, DIN, and GB standards for international railway and industrial rail systems.
Packaging & Transportation
- Moisture-proof performance reaches 99% when a five-layer reinforced protective packaging method is used.
- Every box load-bearing test weighs more than 1000 kg.
- Transportation vibration can be reduced by 90% with a special shockproof liner.
- Every product has an RFID smart traceability sticker that can be tracked around-the-clock.
Our Strength
With over 30 years of professional manufacturing experience, Wuxi Lanling Railway Equipment Co., Ltd. has become a trusted supplier of rail fastening systems and components.
We combine advanced forging, machining, and coating technologies to deliver reliable, high-performance products to customers in Asia, Europe, the Middle East, and North America.
We offer full technical support, installation guidance, and product warranty for every customer. Our engineering team can assist with rail layout design and fastening solutions for complex crane systems.
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