Trailer Hardware | Nut | Lock 1-1/8"-7 | Used with 7-170 | 21-757

Trailer Hardware | Nut | Lock 1-1/8"-7 | Used with 7-170 | 21-757

This trailer hardware is specified as Nut, Lock 1-1/8"-7, Used with 7-170. Use part number 21-757 when matching or reordering this component. It is intended for service, repair, or replacement work where the listed dimensions and application details match the trailer.

Key Specifications

• Nut
• Lock 1-1/8"-7
• Used with 7-170
• Part/SKU: 21-757

Application and Fitment

Designed for compatible trailer hardware applications. Confirm diameter, thread pitch, length, head or seat style, finish, and the intended assembly. Trailer parts that look similar can use different dimensions or ratings, so use the stamped part number and physical measurements as the final fitment check.

Before You Order

Inspect the related components for wear and compare every listed measurement with the part being replaced. Installation should follow the trailer or component manufacturer's procedures and applicable torque specifications.

Why Buy from Trailer Parts Plus?

Trailer Parts Plus supplies practical replacement trailer hardware for utility, cargo, boat, equipment, and commercial trailers. Need help confirming 21-757? Have your axle rating, measurements, and existing part numbers ready so the correct match can be verified.