126A1 – 3/4″-16 X 3.5″ Wet Bolt w/ Nut, Zerk, Cotter

The 126A1 Wet Bolt Kit provides a complete spindle fastening solution for trailer hubs and axle assemblies. This assembly includes a precision-machined ¾”–16 × 3.5″ wet bolt, matching high-strength hex nut, grease zerk fitting for hub lubrication, and a stainless-steel cotter pin for positive locking. Ideal for maintaining properly greased wheel ends and ensuring safe, leak-free operation.

Features:

• Wet bolt design allows in-service greasing of wheel bearings via the zerk fitting
• ¾”–16 thread for heavy-duty axle applications
• Kit includes: bolt, hex nut, grease zerk fitting, and cotter pin
• Nut seats flush for spin-on grease caps or hub covers
• Protects bearings by enabling regular lubrication without disassembly

Specifications:

• Part Number: 126A1
• Bolt Thread: ¾”–16 UNC
• Bolt Length: 3.5″ (threaded shank length, under head)
• Material: Alloy steel bolt & nut; steel zerk; stainless cotter pin
• Finish: Zinc-plated bolt & nut; grease-resistant zerk coating
• Includes:
  • (1) ¾”–16 × 3.5″ wet bolt with built-in grease channel
  • (1) Matching hex nut (¾”–16)
  • (1) Grease zerk fitting (straight, 1/8″ NPT)
  • (1) Cotter pin (0.125″ × 2″)

Fitment & Applications:

• Fits ¾”–16 spindle nuts on many 3,500–7,000 lb trailer axles
• Commonly used with Dexter, Lippert, and industry-standard hubs
• Enables hassle-free bearing lubrication without hub removal
• Perfect for boat trailers, utility trailers, and equipment haulers