My other mod Add Resources is also a Tutorial on finding ID's and making Batch Files (Bat Files)

This mod is mainly designed to show how to add Legendary Stats to Weapons,
Spacesuits, Helmets, and Boost Packs as well as setting the
Quality Level. It does include 4 bat files that can auto mod each type to Legendary Level with My Favorite Legendary Stats.
moda.txt mods Armor,
modh.txt mods Helmets,
modp.txt mods Boost Packs and
modw.txt mods Weapons.
Just extract those 4 files to the Root of your Starfield Game Folder (Where
Starfield.exe is) and in game Drop the item to mod on the Ground (Not in
your ship as it is almost impossible to correctly select it in Command
mode) open Command Prompt and Click on the Item so it shows it's ID (Ex
ARMO XXXXXXXX) then type "bat moda" with no quotes and hit enter and
when you close the prompt and pick up the item it will have 3 effects
and be legendary.
moda.txt, modh.txt, and mod p.txt can be used interchangeably with any Armor, Helmet or Boostpack but modw.txt can
only be used with Weapons.

moda.txt adds
amod 000be542 ; mechanized +40 carry capacity
amod 001336c1 ; chameleon makes you invisible in sneak while not moving
amod 00060295 ; weapon holsters weapons weigh 50% less

modh.txt adds
amod 000be542 ;mechanized +40 carry capacity
amod 000690ae ;o2 filter -25% oxygen consumption
amod 000710fd ;acrobat reduces fall dmg by 50%

modp.txt adds
amod 000be542 ; mechanized +40 carry capacity
amod 000690b0 ; o2 boosted +20% oxygen
amod 000710fd ;acrobat reduces fall dmg by 50%

modw.txt adds
amod 000ff442 ;Legendary 1 - Anti-Personnel
amod 00122f1c ;Legendary 2 - Hitman
amod 000fa8d6 ;Legendary 3 - Explosive

To set the Quality Level of any Item Drop the item to mod on the Ground
(Not in your ship as it is almost impossible to correctly select it in
Command mode) open Command Prompt and Click on the Item so it shows it's
ID (Ex ARMO XXXXXXXX) then type "amod 3AF7D" no quotes for highest
quality level

Quality Codes
Armor
11E2BB    mod_Armor_Spacesuit_Quality_01
11E2BC    mod_Armor_Spacesuit_Quality_02
11E2BA    mod_Armor_Spacesuit_Quality_03
11E2B9    mod_Armor_Spacesuit_Quality_04
3AF7D    mod_Armor_Spacesuit_Quality_05

Weapons
Thanks kbubba
06 September 2023, 10:48PM
Also for anyone who wants to know the Weapon Quality Codes:

Calibrated (Level 2) - 0028F442
Refined (Level 3) - 0028F443
Advanced (Level 4) - 0028F444
????? (Level 5) - 0028F445 - Increases stats, but not item name


Here are all the Legendary codes I have found so far

These will all work with Armor, Helmets, and Boost Packs
Mod Rare          sets the Rare Mods
Mod Epic          sets the Epic Mods
Mod Legendary     sets the Legendary Mods

Mod Rare

ID            Name            Modifier Description
002c43db    Sensor chip        +20% acc while moving
000be540    Sentinel         75% chance to take 50% less damage while not moving
002c43dc    Headhunter        +25% damage on next attack after a headshot
002ede59    Armor Plated    -10% damage from physical,energy and em
000be542    Mechanized        +40 carry capacity
002EDE4F    Assisted Carry    reduces O2 consumption while encumbered by 75%
00002983    Incendiary 2    10% chance to ignite nearby attackers
00059ae8    Mirrored        4% chance to reflect attacks
0006029d    Repulsing        5% chance to disarm nearby attackers


Mod Epic

ID            Name            Modifier Description
000690b0    O2 boosted        +20% oxygen
001336be    Combat Veteran    -15% damage from humans
001336bd    Beast Hunter    -15% damage from aliens
001336c1    Chameleon        makes you invisible in sneak while not moving
0013369c    Ablative        -15% incoming energy damage
00133699    sturdy            -15% incoming melee damage
000690ae    O2 filter        -25% oxygen consumption
001336c6    bolstering        grants up to +100 energy and physical resistance, the lower your health
001336bc    technician        -15% damage from robots
0013369e    anti-ballistic    -15% incoming damage from ranged weapons


Mod Legendary

ID            Name                Modifier Description
002ede4e    Fastened            +20 carry capacity
000c9a43    Auto Medic            automatically use a med pack when hit and health is below 25%, 60s cd
000710f7    Galvanized            +25 corrosive resistance
0007d728    Incendiary 1        randomly deal fire damage (works with the other incendiary mod too)
000710f6    Liquid Cooled        +25 thermal resistance
00060293    Resource Hauler        resources weigh 25% less
000690af    Analyzer            +10% dmg to scanned targets
000710f5    Leadlined            +25 radiation resistance
002c43da    Hacker                +2 max auto attempts that can be banked while hacking
00060295    Weapon Holsters        weapons weigh 50% less
000710fd    Acrobat                reduces fall damage by 50%
000710fa    Antiseptic            +25 airborne resistance
000e8d64    Staggering            small chance to stagger enemies


Weapon Legendary Mods
For Weapons the number of mods added determine the Class Ex 1 mod = Rare, 2 Mods = Epic, 3 Mods = Legendary

ID                Name                Modifier Description
000FF442        Anti-Personnel        +10% Damage against Humans
000FEA07        Bashing                Deals double damage when gun bashing
000F437E        Berserker            Does more damage the less armor one has
000F428E        Cornered            Damage increases as health decreases
000FC884        Demoralizing        Small Chance to Demoralize a Target
001625EB        Disassembler        +20% Damage against Robots
0031C0C4Elementalgives a chance on a random elemental effect
000FA8D6        Explosive            Randomly switches to Explosive Rounds
000FFA3B        Extended Magazine    Doubles the base magazine
0015DD18        Exterminator        +30% Damage against Aliens
000FC8A4        Frenzy                Small Chance to Frenzy a Target
000EA117        Furious                Each consecutive hit deals more damage
00122F1C        Hitman                +15% Damage while Aiming
0007D728        Incendiary            Randomly switches to Incendiary Rounds
000F2013        Instigating            Deals Double Damage to Targets with Full Health
000FEA49        Lacerate            Randomly applies a Bleeding effect to the Target
000FFA3C        Med Theft            Chance that Humans drop extra Med Packs on Death
00319AEC        Poison                Randomly Deals Poison Damage and Slows the Target
000EA13B        Radioactive            Randomly switches to Radioactive Rounds
000FEA04        Rapid                +25% Increase in Attack Speed
000F4557        Shattering            Break Through even the Strongest Armor
0031C0C4Skipshotgives an extra shot every 4th bullet
000F7321        Space-Adept            +30% Damage when in Space and -15% Damage when on a Planet
000E8D64        Staggering            Small Chance to Stagger Target
000FFA3D        Titanium Build        Premium Build Materials make this Weapon Light as a Feather

From kbubba
For All Standard Mods here is a Starfield Modifiers - Google Sheets