M4 Flanged Lock Nut Set $1.99 Quantity discounts available QuantityPrice Quantity: -+ Add to Cart SKU: HPIZ684 ABOUT THIS PRODUCT:M4 Flanged Lock Nut SetAboutAboutSet of four (4) self-clinching flanged lock nuts. M4 size. HPI part # Z684. Q&A's:Be the first to submit a Question.Submit your question:Your question has been successfully submitted !Please write a question.