[17] PLUG, 1/2" NPT LEVEL SEAL (B039)
[18] HHCS, 1/4-20 UNC x 0.5, GRADE 8 (B040M)
[19] HHCS, M10 x 1.5 x 25, GRADE 10.9 (SH00012-0.750F)
[20] HHCS,0.375UNC-0.750 GR8 ZNC (SH00012-1.000F)
[21] HHCS,0.375UNC-1.000 GR8 ZNC (SH10030-0.375)
[22] WSHR,NL-0.375 GR8 ZN (W001)
[23] WASHER, 1/4'', HARDENED (W004M)