Railroad tie lag screws, also known as sleeper screws, rail screws, or lag bolts, are medium or large metal screws used to fix the rail base plate or rail. This screw spike is always fixed in the holes drilled on the tie sleeper, sometimes fixed with the embedded plastic dowels, and is usually used for rails with wooden sleeper, especially in the United States and Canada.
Railroad tie lag screws production process:
1. Raw material
2. Pull line
3. Rod cutting
4. Head molding
5. Cut
6. Thread roller
7. Heat treatment
8. Surface treatment
9. an examination
10. Package
11. Transportation
Kingrail Parts can produce railroad tie lag screws of various sizes to meet the installation needs of different sizes of railways. Our lag screws can reach UIC, AREMA, GB, BS, DIN and JIS or ISO and other standards.
SS25, SS35, SS36 sleeper screw
Size: 24 × L, L = 150mm to 270mm
Level: 5.6, 8.8
Standard: ISO898-1, UIIC864-1, NF F500-50
Surface treatment: ordinary oil, sandblasting oil, black oxide, galvanized, HDG, Daklo and zinc.
AS screw spike
Mechanical performance: UTS550-700N/mm2, an extension of 15%.
Standard: BS64 normal strength
Surface treatment: ordinary oil, sandblasting oil, black oxide, galvanized, HDG, Daklo and zinc.
24 × 185mm alloy steel screw spike
Size: 24 × 185mm
Material: alloy steel
Level: 8.8
Execution standard: GB/T3098.1
Surface treatment: ordinary oil, sandblasting oil, black oxide, galvanized, HDG, Daklo and zinc.
TR thread screw
Size: TR22 × L, TR23 × L, L = 115mm to 165mm, Step 5mm
Level: 4.6, 5.6, 8.8, 10.9
Standards: NF F500-15, UIIC864-1, ISO898-1
Surface treatment: ordinary oil, sandblasting oil, black oxide, galvanized, HDG, Darklo, zinc osmotic
Timber screw
Size: diameter 15/16 '', 1 '', L ordered by 16 × 115, 19 × 115. Diameter 3/4 '' × l, l = 12 ''
Material: Low -carbon steel Q235
Mechanical performance: minimum tensile strength 740000PSI
Surface treatment: black oil, soaked wax
Chex screw spikes
Size: 25 × 190mm 24 × 180mm
Level: 4.6, 5.6, 8.8
Standard: AS1085.18
Surface treatment: HDG
Other types
We can customize railway lag screws according to the customer's drawings and grades.
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