SFT Steel Lock Nut for Railroad Trucks - 28-37 HRC Hardness, Class 10 Mechanical Properties, -50℃ to 100℃ Temperature Range
Price:
Negotiable
MOQ:
100
Delivery Time:
Negotiable
Brand:
HT
Product Description
Railroad Truck SFT Steel Lock Nut
Railway casting parts truck fastener SFT locknut designed for ZT type bolt applications, specifically for mounting column wear plates on side frames for railway freight wagon bogies.
Product Specifications
| Item | Specification |
|---|---|
| Type | SFT locknut |
| Technical Standards | Q/ZC35-062-2004, TJ/CL412-2014 |
| Production Capacity | 200,000 pcs/month |
| Material | Carbon steel, Alloy steel |
| Process | Quenching and tempering heat treatment |
| Hardness | 28-37 HRC |
| Mechanical Property Class | Class 10 |
| Surface Treatment | Oxidation treatment |
| Operating Temperature | -50℃ to 100℃ (-58℉ to 212℉) |
Key Advantages
- Superior anti-vibration performance
- High abrasion and shear resistance
- Excellent reuse performance
Technical Dimensions - Type 1
| Nominal Diameter | h (mm) | D1 min (mm) | S (mm) | e max (mm) |
|---|---|---|---|---|
| M10 | 8.94-9.3 | 14.36 | 15.73-16 | 15.73 |
| M20 | 11.57-12 | 16.63 | 17.73-18 | 17.73 |
| M14 | 13.4-14.1 | 19.64 | 20.67-21 | 20.7 |
| M16 | 15.7-16.4 | 22.49 | 23.67-24 | 23.7 |
| M18 | 16.9-17.6 | 24.9 | 26.16-27 | 26.67 |
| M20 | 19-20.3 | 27.7 | 29.16-30 | 29.5 |
| M22 | 20.5-21.8 | 31.4 | 33-34 | 33.5 |
| M24 | 22.6-23.9 | 33.25 | 35-36 | 35.5 |
| M27 | 25.4-26.7 | 38 | 40-41 | 40.5 |
| M30 | 27.3-28.6 | 42.8 | 45-46 | 45.5 |
Technical Dimensions - Type 2
| Nominal Diameter | h (mm) | D1 max (mm) | S (mm) | e (mm) | a after close (mm) | b (mm) | c (degrees) |
|---|---|---|---|---|---|---|---|
| M10 | 9.1-9.3 | 15.5 | 15.73-16 | 15.5 | 0.3-0.8 | 1.5-2 | 152±3° |
| M12 | 11.7-12 | 17.5 | 17.73-17 | 17.5 | 0.3-0.8 | 1.7-2.2 | 152±3° |
| M14 | 13.9-14.2 | 20.5 | 20.7-21 | 20.5 | 0.4-1.0 | 1.9-2.4 | 152±3° |
| M16 | 16.1-16.4 | 23.5 | 23.7-24 | 23.5 | 0.4-1.0 | 2.1-2.6 | 152±3° |
| M18 | 17.3-17.6 | 26.5 | 26.67-27 | 26.5 | 0.6-1.2 | 2.3-2.8 | 152±3° |
| M20 | 20-20.3 | 29.5 | 29.5-30 | 29.5 | 0.6-1.2 | 2.9-3.4 | 152±3° |
| M22 | 21.5-21.8 | 33.5 | 33.5-34 | 33.5 | 0.9-1.5 | 3.1-3.6 | 152±3° |
| M24 | 23.6-23.9 | 35.5 | 35.5-36 | 35.5 | 0.9-1.5 | 3.3-3.8 | 152±3° |
| M27 | 26.4-26.7 | 40.5 | 40.5-41 | 40.5 | 1.2-2.0 | 3.3-3.8 | 152±3° |
| M30 | 28.3-28.6 | 45.2 | 45.5-46 | 45.2 | 1.2-2.0 | 3.3-3.8 | 152±3° |
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Company
Chongqing Hengtairail Equipment Co.,Ltd.
Location
A1-3-1, Xinrui Zone, No. 25-1-3, Keyuan 1st Street, Jiulongpo District, Chongqing
Contact Person
Wei Dong