Improvement Materials (改修資材, IM, screws) are items required for equipment improvement.

Description

装備を改修する為の資材、「改修工廠」で使用します。

Used in the "Improvement Arsenal" to improve equipment.

How to Obtain

Purchasable in the Shop:

One time:

A44 (x3), A45 (x5), A57 (x2), A60 (x2), A64 (x2), A71 (x3),
B33 (x5), B38 (x2), B41 (x3), B44 (x2), B45 (x2), B47 (x4), B49 (x3), B56 (x2), B57 (x3), B59 (x3), B60 (x3), B62 (x3), B66 (x3), B68 (x2), B69 (x3), B72 (x2), B74 (x4), B79 (x4), B86 (x5), B88 (x2), B90 (x4), B91 (x3), B95 (x4), B99 (x4), B101 (x4), B102 (x4), B109 (x4), B110 (x4, choice), B112 (x4, choice), B113 (x3, choice), B116 (x5, choice), B118 (x4, choice), B120 (x4, choice), B124 (x5, choice), B126 (x4, choice), B127 (x4, choice), B130 (x5, choice), B137 (x5, choice), B141 (x6, choice), B145 (x4, choice), B147 (x2, choice), B149 (x4, choice), B161 (x6, choice), B163 (x3, choice), B170 (x7, choice), B173 (x5, choice), B174 (x5, choice), B175 (x5, choice), B176 (x4, choice), B177 (x6, choice), B183 (x8, choice), B185 (x7, choice), B187 (x7, choice), B188 (x10, choice), B194 (x7, choice), B198 (x5, choice), B199 (x7, choice), B200 (x8, choice), B202 (x2, choice), B205 (x10, choice), B207 (x9, choice),
C6, C7, C13 (x2), C18 (x2, choice), C48 (x2, choice), C51 (x4, choice), C68 (x2, choice), C75 (x3, choice),
D18, D19 (x2), D28 (x4, choice), D29 (x3), D30 (x2, ), D39 (x4, ), D42 (x4, ), D43 (x3, ),
F17 (x7), F36 (x6), F83 (x2, choice), F96 (x4, choice), F97 (x4, choice), F106 (x8, choice), F108 (x3, choice), F110 (x2, choice), F118 (x10, choice),
G11 (x5, choice)

Repeatable:

Bw5, Bw7 (x3), Bw9 (x2), Bw10 (x3), Bm3 (x3), Bm4 (x4), Bm5 (x3), Bm6 (x2), Bm7 (x2), Bm8 (x2, choice), Bq1 (x5), Bq2 (x4), Bq4 (x4), Bq7 (x5, choice), Bq10 (x10, choice), Bq11 (x2, choice), By1 (x4, choice), By4 (x4, choice), By5 (x8, choice), By7 (x3, choice), By12 (x4, choice), By13 (x2, choice), By14 (x3, choice), By15 (x5, choice),
Cw1, Cq2 (x3,choice), Cq3 (x3, choice), Cy3 (x3, choice), Cy7 (x3, choice), Cy8 (x3, choice), Cy9 (x4, choice), Cy10 (x4, choice), Cy12 (x2, choice), Cy16 (x3, choice),
Dw3, Dq2 (x3), Dy1 (x3, choice), Dy3 (x3, choice), Dy4 (x4, choice), Dy6 (x4, choice), Dy7 (x3, choice), Dy8 (x4, choice),
Fd6, Fw2, Fq1 (x4), Fq4 (x4, choice), Fy1 (x5, choice), Fy3 (x5, choice), Fy4 (x4, choice), Fy5 (x2, choice), Fy6 (x2, choice), Fy7 (x8, choice), Fy8 (x3, choice), Fy9 (x3, choice), Fy11 (x2, choice),
Gy2 (x2, choice), Gy4 (x2, choice)

Some Expeditions reward screws (Great Sucess (GS) only sometimes):

Events and limited quests can reward screws.

Due to the uncertainty of such rewards, please check the current event/quest page for up-to-date details.

Some ship remodeling consume screws.

One Time: