Grade 4.8 8.8 10.9 Galvanized Railway Fish Bolt Plate And Nut

Fish bolts are bolts for fastening fishplates. Railway fishplates are generally used at the joints of two rails on the railway to fix the two sections of steel rails. Fishbolt need to be used in conjunction with nuts. When purchase, please choose the fishbolts that match the aperture size and the thickness of the fishplate.

We are a professional supplier of wholesale and custom rail bolt products. Our rail fasteners have passed ISO9001-2000 and CE certification, to meet the EU and other high standards of railway equipment quality requirements. Over the years, we have provided track bolts and supporting railway products to hundreds of customers from dozens of countries. AREMA. BS, GB, UIC and DIN standard types of rail bolts and abrasives are readily available, and production can be started at any time.

Square head fish bolt

Size: M20, L as ordered
Grade: 4.6, 5.6
Standard: DIN5903-2 Type B
Surface treatment: Zinc plated, hot dip galvanized

Cup head oval neck fish bolt

Size: M18, M20, M22, M24, L as ordered
Materials: Middle carbon steel
Standard: AS 1085.4, 6&7
Surface treatment: Black

BHON track bolt

Size: Dia. 5/8"－1-1/2", Length1-1/2"－13"
Grade: Gr2, Gr5, Gr8
Standard: AREMA & SAE J429
Surface treatment: Black, Zinc plated

BHDN track bolt

Size: Dia. 15/16"－1-1/2", Length1-1/2"－13"
Grade: Gr2, Gr5, Gr8
Standard: AREMA & SAE J429
Surface treatment: Black
Application areas: North America

Day mark fish bolt

Size: A30, B30, A37, B37, A50, B50, B40N
Grade: 4.6, 5.6, 6.8, 8.8, 10.9
Standard: JIS E1107
Surface treatment: Black, Zinc plated, plain oiled

The benefits of galvanizing fish bolts are superior corrosion resistance from a protective zinc coating, long-term durability and strength, enhanced abrasion resistance, and lower maintenance costs due to the coating's long life. The galvanized layer provides a barrier and also offers cathodic protection, meaning it sacrifices itself to protect the underlying steel from rust and other environmental factors, making it ideal for marine or outdoor applications.

The main use of a fish bolt is to connect two steel rails in a railway track by fastening a fishplate (or joint bar) to the ends of the rails. Fish bolts are specifically designed to withstand the high stress, vibration, and dynamic load of passing trains. They are also used in other industries requiring heavy-duty fasteners for steel structures, such as the metallurgical and coking industries.

• Railway tracks: This is the most common use, where fish bolts hold two separate rail sections together to create a continuous track.

• Steel and metallurgical industries: Fish bolts are used for heavy-duty connections in machines and structures.

• Other applications: They are sometimes used in the coking industry and for connections in bridges or other heavy-duty applications.

Prior to shipment packaging of railway fasteners, product appearance quality inspection and targeted protective treatment must first be completed. For fasteners with precision structures on the surface (such as embedded sleeves, insulated rail gauge blocks), use transparent PE protective film to attach to the surface, avoiding scratches affecting usage accuracy;

Each package is clearly labeled with key information, including product name ("fish bolt and nut"), specification, material, surface treatment (e.g., "Hot-dip Galvanized"), quantity, net weight, gross weight, manufacturer's name, and logo. Handling marks such as "Keep Dry", "Handle with Care", and "Stack Height Limit" are also printed on outer cartons to guide proper storage and transportation.

Contact now

GNEE RAIL manufacture according to GB/TB (Chinese national standards and railway standards), AREA, UIC, BS, DIN, ASTM, and AS standards.

Our products are mainly made through hot forging. The threads of rail screw spikes are made by hot rolling with special threading machines. We produce metric threads, BS, BSW, TR thread, or round threads.

Our high strength bolts come in different specifications of Class 4.8, 4.6, 5.6, 5.8, 6.8, 8.8, 10.9, and 12.9. A variety of non-standard fastening is also available. We can customize our products using customer drawings or samples as well.

Hot Tags: grade 4.8 8.8 10.9 galvanized railway fish bolt plate and nut, China grade 4.8 8.8 10.9 galvanized railway fish bolt plate and nut manufacturers, suppliers, factory