The home page banner on free shipping is gone, but I searched and selected for a few items, and they all were listed as free overnight shipping. So if for example you go to the 74hc4017 in DIP, and look over to the right where you add it to your cart, there's a link for "+FREE OVERNIGHT SHIPPING - DETAILS". I've reproduced below what it says. But I haven't made a purchase recently, so I don't know if shipping is actually still free or not.
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Free 1-Day Shipping on Arrow.com
Free 1-Day Shipping - No Minimum Order
Add the items you wish to purchase to your cart and overnight shipping is free when you check out. Everything we sell ships free overnight. Discount is automatically applied at checkout. No code needed. It's that simple.
For a limited time only, receive free US ground and international shipping on every order placed on
www.arrow.com. All orders receive free overnight shipping (US domestic orders only) or free priority international shipping (international orders). Free shipping will automatically be applied at checkout and includes select carriers and shipping methods. To have order shipped same day with overnight shipping, orders must be placed before 8pm ET for air shipments. Cut-off time for all ground shipments is 11pm ET. Orders placed after cut-off times, will be shipped on the next business day. Orders containing hazardous materials may not ship same day and may ship on a ground shipping method. Free shipping is available only if customer selects Arrow’s shipping account at checkout. Free overnight shipping does not apply to purchases made on
www.arrow.com/MyArrow and purchases made on components.arrow.com
Free overnight shipping for all US domestic orders applies to FedEx Standard Overnight. Free domestic ground shipping with $20 threshold for FedEx Ground and USPS First Class. Free priority international shipping for all international orders applies to FedEx International Priority.