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