Cap Screw Bolt Metric, FT, 10.9 Zinc M14 x 2.0 x 40 mm Length, 50 Pcs | eBay
Windshield Wiper Bolt Cap 2008+ WRX/STI /BRZ - FastWRX.com
M6-1.00 x 20mm Stainless Steel Hex Cap Bolt / Screw, Coarse DIN 933 Tap A2 18-8 | eBay
CAP,SOCKET BOLT 6 for GL1500SE GOLDWING SPECIAL EDITION 1995 (S) SPAIN / KPH - order at CMSNL
Found an ancient coin on my first hunt (search?) in City Park, New Orleans. Also found several bottle caps, aluminum can pull tabs and 21 cents! : r/metaldetecting