Description

Overview

M30 nyloc hex nut secures pivot and suspension hardware on heavy trailer air suspension assemblies. The zinc plated metric lock nut uses a nylon insert to resist loosening, so it suits service points where vibration and movement can work standard nuts loose.

Features

• M30 metric nyloc hex nut for heavy trailer suspension hardware.
• Zinc plated finish for general corrosion resistance.
• 45mm across-flats size with 51mm outside width and 29mm height.
• Suits BPW, Meritor, Stefair and York air suspension applications listed for this nut.

Specifications and Materials

M30 nyloc hex nut suits metric suspension fastening where a nylon insert lock nut is required. The listed dimensions are Size A M30, Size B 45mm, Size C 51mm and Size D 29mm, so check the matching bolt, washer and suspension assembly before ordering.

Part number: CH5521.

Use the ISO 7040 prevailing torque nut standard when matching non-metallic insert lock nut requirements.

Compatibility and Fitment

Match this nut to the suspension model, bolt diameter and washer stack before fitting. It suits BPW Type 30-36-36K, Meritor Flexair FL11000L-150, Stefair Euro 3, York Duratrac FB, York Tecair 1 and York Tecair 2 suspension applications.

These cross-references show where this part replaces the part numbers and applications listed. Some installations may need minor changes. 754448, 99527003, B0702008600A, 295329

Related Parts

Check the related service parts below against the trailer setup before ordering.

Compliance and Safety

Replace nyloc nuts after removal where the nylon insert no longer gives proper locking resistance. Also inspect the matching bolt and washer before reassembly, because worn pivot hardware can affect suspension alignment and clamping force.

Trailer Applications

Workshops use M30 nyloc hex nut during air suspension pivot and beam hardware service on trailer suspension systems. It suits fleet repair work where mechanics need to match the nut to specific BPW, Meritor, Stefair or York suspension assemblies.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Why Choose ICS Trailers

This nut belongs with the pivot bolts, washers and bushes that keep trailer suspension hardware clamped correctly. Keeping the matching M30 hardware together helps workshops complete suspension service without mixing fastener sizes across different axle and suspension setups. Shop more through the Suspension parts category