M24 X 80mm Bolt Track Shoe Nuts Kit Grade 10.9 High Tensile Steel Corrosion Resistant Coating Crawler Tractor Undercarriage

M24 x 80mm Track Chain Assembly Bolts & Nuts Kit - Grade 10.9 High Tensile Steel - Corrosion Resistant Coating - Compatible with Common Crawler Tractor Undercarriage Systems

Innovations:

• Locking Tech: Integral spiral locking threads (Deutschhold® patent)

• Material: Grade 12.9 super alloy (1,200 MPa yield)

• Finish: Phosphating + wax impregnation

• Design: Reduced-shank diameter for elasticity

Dynamic Load Performance:
Tested under SAE J2531 vibration profile (10–2,000Hz), these bolts maintain clamp load at >85% after 5M cycles. The spiral lock threads create radial interference, resisting loosening better than nylon inserts. Phosphated surface holds lubricant film, reducing fretting wear by 60%.

Compatibility:

• Mine sites with blast vibrations

• Piling rigs/compactors

• Rail-mounted excavators

Technical Specs:

• Fatigue limit: 425 MPa (R = -1)

• Operating temp: -50°C to +150°C

• Magnetism: <1.05 permeability (non-interfering with sensors)

Maintenance:
Inspect every 500 service hours. Discard if thread damage exceeds 10% or corrosion penetrates >5µm.

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Quanzhou Yangxin Machinery Co., Ltd. was founded in 2017 and is located in Quanzhou, Fujian Province, on the Silk Road. It is adjacent to Quanzhou Jinjiang Airport and has convenient transportation. Our company specializes in producing high-strength track shoes, bolts, and various chassis vulnerable parts. Our products undergo strict inspections before leaving the factory and are sold well throughout the country. We adhere to the business philosophy of "quality first, customer first",