Mercury 200 Verado FourStroke Operation, Maintenance & Warranty Manual page 138

Must be a hex head bolt with an unthreaded shank length of not less than 1
Thread size
Material
Minimum mechanical
properties
• Nut specifications:
Nut to be a prevailing torque, full height nut, nylon 6/6 or equivalent insert
Thread size
Material
Minimum mechanical
properties
• Washer specifications:
This washer is for use on the
transom bracket side of the
application
This washer is for use on the
transom side of the application
INSTALLATION
inch
0.50‑20 inch UNF ‑ 2A thread
Austenitic stainless steel grade 304 or 316
90,000 psi ultimate tensile strength/50,000 psi
yield strength. This corresponds to a F593C
bolt head marking per American Society for
Testing and Materials (ASTM).
0.50‑20 inch UNF thread
Brass, Grade Cu 613 per ASTM
80,000 psi proof stress. This corresponds to
a F467F mechanical marking per ASTM.
0.88 x 0.53 x 0.104 inch flat washer,
630 (H1025) hardened stainless
steel
1.5 x 0.515 x 0.125 inch flat washer,
302, 304, or 316 stainless steel
128
48016
eng