Replacement set of 100 square track nuts designed to fit Caterpillar models D6N D6M D5H D6R D6H D7H and models 517 and 527. Ideal for workshops, fleet maintenance, and field repairs where reliable replacements are required quickly. Key benefits Bulk supply reduces downtime: 100 nuts in one set keep a service bay or fleet depot stocked for multiple repairs and routine maintenance cycles. Exactfit replacement: Designed to match the square nut profile and dimensions used on the listed models for straightforward installation and reliable seating on track bolts. Consistent performance: Each nut is manufactured to consistent tolerances to ensure uniform clamping and reduced risk of loosening during operation. Practical for parts management: Samepart replacements simplify inventory and reduce the time spent sourcing individual items. What this product does Secures track components: These square nuts fasten track bolts and components on the undercarriage, helping keep track links and shoes properly joined during operation. Facilitates repairs and overhauls: Used during track replacement, undercarriage rebuilds, or when replacing worn or damaged fasteners. Compatibility and dimensions Fits the following models: D6N, D6M, D5H, D6R, D6H, D7H, 517, 527. Square profile: Matches the square nut interface used on the compatible machines. OEMcompatible sizing: Produced to align with the standard dimensions and tolerances required for the listed models. Verify thread size and torque values against the equipment manual during installation. Use scenarios Service overhaul: A heavy equipment maintenance replaces worn undercarriage fasteners across several machines. The 100piece set provides enough nuts for multiple rebuilds without frequent reordering. Field after track failure: A field technician carrying a stock kit can quickly damaged or missing track nuts onsite to get equipment back to a worksite without waiting for parts delivery. Preventative maintenance for fleets: Fleet managers keep a supply on hand for scheduled track inspections and preventive replacements to avoid progressive wear from loose or damaged fasteners. Package contents 100 square track nuts compatible with the listed models, supplied ready for installation. Installation note Follow the equipment manufacturers service manual for correct thread engagement, torque specifications, and any recommended locking or retaining methods. This set provides a practical, readytouse supply of square track nuts for routine maintenance, emergency repairs, and undercarriage rebuilds on the compatible models listed.