Quantity Digits to Accompany Grenade Modifier Codes
01 - Napalm Grenade
02 - Dynamite
03 - Airstike Beacon
04 - Shatter Grenade

Quantity Digits to Accompany Weapon Modifiers Codes
01 - Spread Pulse Cannon
02 - Napalm Grenade
03 - Dynamite
04 - Airstrike Beacon
05 - Shatter Grenade
06 - Multiple Warhead Rockets
07 - Spyra Missles
08 - Flame Thrower
09 - Hominig Missiles
0A - Portable Particle Accelerator
0B - Vulcan Cannon
0C - Shotgun
0D - Phantasm
0E - Mines
0F - Reclaimed Alien Weapon
10 - Laser Guided Missiles
11 - Pulse Cannon

Note 1:
With these digits, you must use them with the Equip Any Grenade Into Any Weapon Slot Code, if you do not use them with this code, then you will not be able to fire the grenades.