SG1820 SG1820A SG1802
General Construction Set-in Set-in Set-in
Scale Length 24-3/4" (628.6mm) 24-3/4" (628.6mm) 24-3/4" (628.6mm)
Body Body Materials Maple / Mahogany Maple / Mahogany Maple / Mahogany
Body Finish Gloss Polyurethane Gloss Polyurethane Gloss Polyurethane
Neck Neck Materials Mahogany 3-Piece Mahogany 3-Piece Mahogany 3-Piece
Neck Finish Gloss Polyurethane Gloss Polyurethane Gloss Polyurethane
Fingerboard Materials Rosewood Rosewood Rosewood
Fingerboard Radius 13-3/4" (350mm) 13-3/4" (350mm) 13-3/4" (350mm)
Fret wire Medium Jumbo Medium Jumbo Medium Jumbo
Number of frets 22 22 22
Nut materials Graph Tech TUSQ Graph Tech TUSQ Graph Tech TUSQ
Neck Width @ 0 Fret / 12th Fret 43.0 / 52.6 mm 43.0 / 52.6 mm 43.0 / 52.6 mm
Thickness @1st Fret / 12th Fret 20.5 / 25.0 mm 20.5 / 25.0 mm 20.5 / 25.0 mm
Electronics Neck Pickup Seymour Duncan '59 SH-1n EMG 85 Seymour Duncan SP90-3n
Middle Pickup - - -
Bridge Pickup Seymour Duncan '59 SH-1b EMG 81 Seymour Duncan SP90-3b
Controls Front Volume, Rear Volume, Front Tone, Rear Tone Front Volume, Rear Volume, Front Tone, Rear Tone Front Volume, Rear Volume, Front Tone, Rear Tone
Pickup Switch 3-Position Toggle Switch 3-Position Toggle Switch 3-Position Toggle Switch
Hardware Bridge TonePros AVRII TonePros AVRII TonePros AVRII
Tremolo Arm - - -
String spacing 10.4mm 10.4mm 10.4mm
Tailpiece TonePros, T1Z TonePros, T1Z TonePros, T1Z
Tuning Machines Grover Locking Tuners Grover Locking Tuners Grover Locking Tuners
Pickguard 2-Ply Ivory 2-Ply Ivory -
Others String gauge D'Addario EXL110 / 0.010-0.046 D'Addario EXL110 / 0.010-0.046 D'Addario EXL110 / 0.010-0.046
Case Hardshell Case Hardshell Case Hardshell Case
Special Features I.R.A. Treatment I.R.A. Treatment I.R.A. Treatment
SG1820/1820A
SG1802