Railway Bolts

Railroad lag bolts, also called rail sleeper screws or railroad tie lag bolts, are medium or large metal screws used to fix steel base plates or rails.

Kingrail Parts can produce various kinds of railroad lag bolts of various materials to meet the actual needs of customers. Our railway bolts can meet SKL, KPO, NablaPR, Russia, fast, UIC, BS, JIS and other standards.

Production Process:

Raw material

Drawing

Bar cutting

Head molding

Trimming

Thread rolling

Heat treatment

Surface treatment

Examination

Package

Transportation

Types of Railroad Lag Bolts:

As the type of rail lag screws, the Ss series is the best-selling, with a variety of sizes to choose from. In addition, there are square head screws, hexagon screws, double head screws, dog screws, wood screws, etc.

1.SS25, SS35, SS36 sleeper screws

Size: 24×L, L=150mm to 270mm

Grade: 5.6, 8.8

Standards: ISO898-1, UIC864-1, NF F500-50

Surface treatment: ordinary oiling, sand blasting oiling, black oxide, galvanizing, hot-dip galvanizing, dacromet and sherardizing.

2.AS screws

Mechanical properties: UTS550-700N/mm2, 15% elongation.

Standard: BS64 normal strength

Surface treatment: ordinary oiling, sand blasting oiling, black oxide, galvanizing, hot-dip galvanizing, dacromet and sherardizing.

3.24×185mm alloy steel screws

Size: 24×185mm

Material: Alloy steel

Rating: 8.8

Standard: GB/T3098.1

Surface treatment: ordinary oiling, sand blasting oiling, black oxide, galvanizing, hot-dip galvanizing, dacromet and sherardizing.

4.Tr thread screws

Size: Tr22×L, Tr23×L, L=115mm to 165mm, step length is 5mm

Grade: 4.6, 5.6, 8.8, 10.9

Standard: NF F500-15, UIC864-1, ISO898-1

Surface treatment: ordinary oiling, sandblasting oiling, black oxide, galvanizing, hot-dip galvanizing, dacromet, sherardizing

5. Wood screws

Size: Diameter 15/16", 1", L, order 16×115, 19×115. Dia. 3/4'' ×L, L=12''

Material: low carbon steel Q235

Mechanical properties: minimum tensile strength 740000psi

Surface treatment: black oil, dipping wax

6.Chex screws

Size: 25×190mm 24×180mm

Grade: 4.6, 5.6, 8.8

Standard: AS1085.18

Surface treatment: HDG

7. Custom lag bolts

Our customers customize lag bolts for railroad according to the customer's drawings and grades.

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