Honda Original Equipment Screw Set
This includes 4 Screw Set 16028-ZA0-931's

This 16028-ZA0-931,4 Screw Set fits these models:
Assemblies where 16028-ZA0-931 is used

E3500K1 A - E3500 1100021-1129668 - CARBURETOR
E3500K2 A - E3500 1200221-9999999 - CARBURETOR
E4500 A - E4500 1000006-1020225 - CARBURETOR
E4500K1 A - E4500 1000005-1020560 - CARBURETOR
EB3500X A - EA6 3000001-3100000 - CARBURETOR (EM, EB)
EB3500XK1 AG/A - EA6 3100001-3114939 - CARBURETOR
EB3500XK1 AG/B - EA6 3114940-3159999 - CARBURETOR
EB3500XK1 AG/C - EA6 3160001-3999999 - CARBURETOR
EB3800X A - EAJC 1000001-9999999 - CARBURETOR (1)
EB3800X AC - EAJC 1000001-9999999 - CARBURETOR (1)
EB3800X AN - EAJC 1000001-9999999 - CARBURETOR (1)
EB5000XK1 AG/A - EA7 3100001-3113257 - CARBURETOR
EB5000XK1 AG/B - EA7 3113258-3179999 - CARBURETOR
EB5000XK1 AG/C - EA7 3180001-3999999 - CARBURETOR
EB5000XK2 A - EAKC 1000001-9999999 - CARBURETOR (1)
EB5000XK2 AC - EAKC 1000001-9999999 - CARBURETOR (1)
EB5000XK2 ACH - EAKC 1000001-9999999 - CARBURETOR (1)
EB5000XK2 AH - EAKC 1000001-9999999 - CARBURETOR (1)
EB5000XK2 AN - EAKC 1000001-9999999 - CARBURETOR (1)
EB5000XK2 ANH - EAKC 1000001-9999999 - CARBURETOR (1)
EB6500SX A - EZCH 1000001-1049999 - CARBURETOR
EB6500SX A/A - EZCH 1050001-9999999 - CARBURETOR
EB6500X A - EALC 1000001-9999999 - CARBURETOR (1)
EB6500X AC - EALC 1000001-9999999 - CARBURETOR (1)
EB6500X ACH - EALC 1000001-9999999 - CARBURETOR (1)
EB6500X AH - EALC 1000001-9999999 - CARBURETOR (1)
EB6500X AN - EALC 1000001-9999999 - CARBURETOR (1)
EB6500X ANH - EALC 1000001-9999999 - CARBURETOR (1)
EB6500X AT - EALC 1000001-9999999 - CARBURETOR (1)
EL5000 A - GX360 1000001-1017635 - CARBURETOR (1)
EM3500SX A - EA6 1000001-1100000 - CARBURETOR (EM, EB)
EM3500SXK1 A/A - EA6 1100001-1111464 - CARBURETOR
EM3500SXK1 A/B - EA6 1111465-1149999 - CARBURETOR
EM3500SXK1 A/C - EA6 1150001-1999999 - CARBURETOR
EM3500X A - EA6 2000001-3000000 - CARBURETOR (EM, EB)
EM3800SX A - EAMC 1000001-9999999 - CARBURETOR (1)
EM3800SX AC - EAMC 1000001-9999999 - CARBURETOR (1)
EM3800SX AN - EAMC 1000001-9999999 - CARBURETOR (1)
EM5000SXK1 A/A - EA7 1100001-1125948 - CARBURETOR
EM5000SXK1 A/B - EA7 1125949-1199999 - CARBURETOR
EM5000SXK1 A/C - EA7 1200001-1299999 - CARBURETOR
EM5000SXK2 A - EANC 1000001-9999999 - CARBURETOR (1)
EM5000SXK2 AC - EANC 1000001-9999999 - CARBURETOR (1)
EM5000SXK2 ACH - EANC 1000001-9999999 - CARBURETOR (1)
EM5000SXK2 AH - EANC 1000001-9999999 - CARBURETOR (1)
EM5000SXK2 AN - EANC 1000001-9999999 - CARBURETOR (1)
EM5000SXK2 ANH - EANC 1000001-9999999 - CARBURETOR (1)
EM6500SXK1 A - EAPC 1000001-9999999 - CARBURETOR (1)
EM6500SXK1 AC - EAPC 1000001-9999999 - CARBURETOR (1)
EM6500SXK1 ACH - EAPC 1000001-9999999 - CARBURETOR (1)
EM6500SXK1 AH - EAPC 1000001-9999999 - CARBURETOR (1)
EM6500SXK1 AN - EAPC 1000001-9999999 - CARBURETOR (1)
EM6500SXK1 ANH - EAPC 1000001-9999999 - CARBURETOR (1)
EM6500SXK1 AT - EAPC 1000001-9999999 - CARBURETOR (1)
ES3500K1 A - ES3500 1100014-1129443 - CARBURETOR
ES3500K2 A - ES3500 1200161-9999999 - CARBURETOR
ES4500 A - ES4500 1000005-1020560 - CARBURETOR
ES4500K1 A - ES4500K11100001-9999999 - CARBURETOR
ES6500 A - GX360 1000001-1017635 - CARBURETOR (1)
ES6500K1 A/A - EA1 1000001-1072228 - CARBURETOR (3)
ES6500K1 A/B - EA1 1072229-1099999 - CARBURETOR (3)
ES6500K1 AR - EA1 1000005-1099999 - CARBURETOR (3)
EV4000 A - EV4000 1000001-9999999 - CARBURETOR / CHOKE SOLENOID
EW140 A - EA9 1000001-9999999 - CARBURETOR
EW171K1 A - EB1 1100001-1119999 - CARBURETOR
EW171K1 A/A - EB1 1120001-9999999 - CARBURETOR
EX3300SK1 A - EB2 1100001-1102329 - CARBURETOR
EX3300SK1 A/A - EB2 1102330-1109999 - CARBURETOR
EX3300SK1 A/B - EB2 1110001-9999999 - CARBURETOR
EX4500SK1 A/A - EB3 1104212-1119999 - CARBURETOR
EX4500SK1 A/B - EB3 1120001-9999999 - CARBURETOR
EX5500 A - GX360 1000001-1017635 - CARBURETOR (2)
EX5500K1 A/A - EA1 1000001-1072383 - CARBURETOR (4)
EX5500K1 A/B - EA1 1072384-1099999 - CARBURETOR (4)
EX5500K2 A/A - EA1 1100001-1100100 - CARBURETOR (4)
H5013 AC2/A - FAHA 4100001-4299999 - CARBURETOR
H5013 AC2/B - FAHA 4300001-9999999 - CARBURETOR
H5013 AC4/A - FAHA 4100001-4299999 - CARBURETOR
H5013 AC4/B - FAHA 4300001-9999999 - CARBURETOR

This is an OEM Honda part.