If you’re in search for quality aviation parts such as Screw But Hd 4 40unc X 5 Or 16 Lg, Aerospace Unlimited is your-one-stop shop. S0410KBBZP are just a few of the Screw But Hd 4 40unc X 5 Or 16 Lg parts that we have inventoried. In fact, we have over 6 billion new, old and obsolete parts in our procurement list. Our customers know that they can trust us because of our policy to source exclusively from certified manufacturers like Contour Machining Inc. We pride ourselves in being the only independent parts distributor with a No China Sourcing pledge. If you submit an Instant RFQ for your desired Screw But Hd 4 40unc X 5 Or 16 Lg parts, we can provide you with a quote in as little as 15 minutes.