Dimension Hexagon nut - 12 x 1.25 - For Rim 
Dimension stud - 1.7 "
weight  - 110 gm
 
Hexagon Nut: 12 x 1.25 (M12 thread, 1.25mm pitch).
Stud Dimension: 1.7" (43mm) length.
Weight: 110 gm (0.11 kg).
Context: Likely used to secure a rim (wheel assembly) on a ride-on toy, mini bike, or small agricultural machine (Mechanical Buffalo), paired with a twin belt clutch (3.5" x 4.8" x 3.3", 4 kg, short shaft) and a lever accelerator cable (4.3" x 1.8", 150 gm).
 
This component appears to be a wheel stud with a hexagonal nut, commonly used to fasten a rim to a hub or axle on vehicles like go-karts, ATVs, or small machinery. Below, I’ll analyze the specifications, provide relevant matches based on the context and available sources, and suggest how it integrates with the Mechanical Buffalo.
 
Understanding the Specifications
Hexagon Nut (12 x 1.25):
M12 x 1.25: Metric thread with a 12mm diameter and 1.25mm fine pitch, common in automotive and small machinery applications (e.g., wheel hubs, engine mounts).
Width Across Flats: Typically 17–19mm for an M12 nut, allowing tightening with a standard wrench.
Material: Likely stainless steel, carbon steel (zinc-plated), or alloy steel for durability and corrosion resistance, given the outdoor use of a Mechanical Buffalo.
 
Stud (1.7" / 43mm):
Length: 1.7" (43mm) total length, likely including the threaded portion and any unthreaded shank. This is typical for wheel studs on small vehicles like go-karts or ATVs.
Diameter: Assumed to be M12 x 1.25 to match the nut, unless otherwise specified.
Function: The stud is pressed or threaded into the hub/axle, and the hex nut secures the rim to it.
 
Weight (110 gm / 0.24 lbs):
Indicates a single stud with nut, heavier than a standard M12 nut (~20–30 gm) due to the stud’s length and material (e.g., steel). Comparable to automotive wheel studs.
 
For Rim:
Suggests the stud and nut are part of the wheel assembly, securing the rim to the hub or axle of the Mechanical Buffalo.
Common in go-karts, ATVs, or ride-on toys with small engines (50cc–250cc, e.g., Honda GX160, Predator 212cc).
 
Mechanical Buffalo Context:
Likely a ride-on toy, mini bike, or small agricultural machine with a twin belt clutch (short shaft, 3/4" or 20mm) and a lever accelerator cable (hand-operated throttle).
The rim is part of the wheel system, possibly 6"–10" diameter, typical for go-karts or small vehicles.