Please fill out the form below for Washer Nylon Shoulder Sz 4 Id and get a quote for part number RV434-0258-001 by Collins Avionics Service Centre, please include required quantity along with expected turn around time. Our knowledgeable account manager will reply you shortly. Also check for the related parts for part number RV434-0258-001. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.