This Listing is for TWELVE (12) ROADWAY MOUNTING SCREWS #8352. These Screws were the normal issue for the Thunderjet 500, T-Jet & AFX TRACK TO ROADBED CONNECTORS. These are Unused, new old stock, original equipment manufactured by The Aurora Plastics Corp. of West Hempstead, Long Island New York. The Vintage 1960's issued parts are new & just as you remembered. Authenticity, quality & condition absolutely guaranteed. Screw length is approx. 12mm(0.47") and screw head is approx. 5mm(0.2") in circumference. Sold as is with no reserve. Buy with confidence & please check out my other offbeat slot car related auctions. These come from my personal collector-obsessed 40-year collection. I will pack your item(s) well & try to ship promptly. Descriptions are very accurate; No Returns. Glad to combine shipping when practical.  We ship promptly & professionally. We happily combine orders & refund any excess s/h immediately upon shipping. We can always provide tracking. I Only ship U. S. Postal Service PRIORITY MAIL TO THE USA. I apologize for any inconvenience, but; Due to previously lost packages: ALL INTERNATIONAL Shipments Only Ship by U.S. Postal Service, GLOBAL EXPRESS. Very Fast Delivery! We Know H.O.