Quanzhou Mingzhu Technology Development Co., Ltd
| Optional Material | 35CrMo Alloy Steel |
| Matching Part | Track Bolt & Nut Assembly |
| Packaging Details | Export pallet packaging |
| Thread Type | Metric Coarse Thread |
| Supply Ability | 1500 MT/month |
| Payment Terms | L/C,D/P,T/T |
| Surface Finish | Black Oxide |
| Delivery Time | 3-5 days |
| Product Size | M19 × 57 mm |
| Manufacturing Process | Precision Hot Forged |
| Certification | CE、CNAS、COC、SGS、ISO |
| Model Number | M19x57mm |
| Brand Name | STST |
| Place of Origin | Fujian, China |
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Product Specification
| Optional Material | 35CrMo Alloy Steel | Matching Part | Track Bolt & Nut Assembly |
| Packaging Details | Export pallet packaging | Thread Type | Metric Coarse Thread |
| Supply Ability | 1500 MT/month | Payment Terms | L/C,D/P,T/T |
| Surface Finish | Black Oxide | Delivery Time | 3-5 days |
| Product Size | M19 × 57 mm | Manufacturing Process | Precision Hot Forged |
| Certification | CE、CNAS、COC、SGS、ISO | Model Number | M19x57mm |
| Brand Name | STST | Place of Origin | Fujian, China |
| High Light | m19x57mm bolts and nuts ，m19x57mm bulldozer undercarriage parts ，black bolts and nuts | ||
The M19x57mm Bolts and Nuts are precision-engineered fastening components designed for excavator and bulldozer undercarriage systems. Designed to withstand continuous vibration, heavy impact loads, and abrasive working conditions, the M19x57mm track bolts and nuts help maintain stable track shoe connections while reducing maintenance frequency and extending the service life of crawler undercarriage assemblies.
Specification | Details |
|---|---|
| Product Name | M19x57mm Bolts and Nuts |
| Product Type | Track Bolts & Nuts |
| Bolt Size | M19 × 57 mm |
| Thread Type | Metric Coarse Thread |
| Material | High Strength Alloy Steel |
| Manufacturing Process | Precision Hot Forging |
| Heat Treatment | Quenched & Tempered |
| Strength Grade | Grade 12.9 (Optional) |
| Surface Treatment | Black Oxide, Phosphate, Zinc Plated or Customized |
| Hardness | HRC 32–39 |
| Tensile Strength | ≥1220 MPa |
| Application | Excavator & Bulldozer Undercarriage Parts |
| OEM / ODM | Supported |
| Packaging | Export Carton, Wooden Case or Customized |
The M19x57mm bolts and nuts are suitable for a wide range of crawler equipment, including:
Each fastener is produced under strict quality control procedures:
Every M19x57mm bolt and nut undergoes comprehensive quality inspections, including:
This rigorous inspection process ensures every fastener meets demanding industry requirements for reliability and long-term performance.
They are designed for excavator and bulldozer undercarriage systems that require M19×57 mm track bolts and matching nuts. Please verify compatibility using your machine model or OEM part number.
The bolts and nuts are manufactured from premium alloy steel and undergo quenching and tempering to achieve high tensile strength, wear resistance, and long-term durability.
Reliable fastening reduces the need for frequent inspections and replacements, helping minimize equipment downtime, lower maintenance costs, and improve operational efficiency.
Low Maintenance Requirements M19x57mm Bolts And Nuts, Long Service Life M19x57mm Bolts And Nuts, Bolts and Nuts, Bulldozer Undercarriage Parts Bolts And Nuts, Excavator Undercarriage Parts Bolts And Nuts
Company Details
Business Type:
Manufacturer
Year Established:
2006
Total Annual:
8000000-12000000
Employee Number:
67~120
Ecer Certification：
Verified Supplier
Quanzhou Mingzhu Technology Development Co., Ltd Quanzhou Mingzhu Technology Development Co., Ltd
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