iMac Retina 4K 21.5-inch Late 2015 - Screws Chart

999-0013
Screws Full Set/Kit, 40+ Pieces

923-0339
Screw, Torx T5, Camera / iSight

Camera (2)

923-0337
Screw, Antenna to Rear Housing, Torx T4

Wireless Antenna Lower (2)
Wireless Antenna Middle (2)
Wireless Antenna Upper (2)

923-00609
Screw, Washer, Torx T5

Wireless Antenna Bracket (2)

923-0323
Screw, Hard Drive, Upper Right, Short, Torx T10

Hard Drive Bracket (1)

923-0324
Screw, Hard Drive, Lower, Medium, Torx T10

Hard Drive Bracket (2)

923-0325
Screw, Hard Drive, Lower Right, Long, Torx T10

Hard Drive Bracket (1)

923-0331
Screw, M3 x 6.0mm, Torx T10

Logic Board (4)
Hard Drive Cradle (1)
Power Supply (2)

923-0338
Screw, Phillips 00, Chin Strap, Long

Chin Strap (Sides) (4)

923-0335
Screw, Chinstrap, Short, Phillips 00

Chin Strap (center) (1)

923-0333
Screw, Shoulder, D4.0, H6, M3 x 4, Torx T10

Left Speaker (2)
Right Speaker (2)
Fan (3)

923-0327
Screw, Shoulder, M2,5.6mm Head, Therm, Torx T8

Heatsink (Upper Finstack) (2)

923-0336
Screw, T8, 2.5mm x 3.0mm, Torx T10

Heatsink (Lower Finstack) (2)

923-00571
Screw, Wireless Card, Torx T4

Wireless Card (2)

923-0329
Screw, Stand, Torx T8

Stand (7)

923-0334
Screw, Torx T10, Clutch Mechanism

Clutch/Hinge Mechanism to Housing (4)

923-0328
Screw, Solid State Drive (SSD), Torx T8

Solid State Drive (SSD) (1)

923-0399
Standoff / Screw, Power Supply, Torx T25, 13.84mm

Power Supply Standoff (lower) (1)

923-0417
Screw, VESA Pentalobe

VESA Mount Adapter / Bracket (2)