Alternator mount screw with lock patch is 10-24 UNC x 1".
VT No: 37-9126
OEM No: 2720
Alternator mount screw with lock patch is 10-24 UNC x 1".
Fits:
FL 1970-1984
FX 1970-1984
FXST 1984-1986
FLST 1986-1986
UOM: 10 - PK
Country of Origin: USA
Type: All Other 
2018 Catalog pages: 346, 694 
2017 Catalog Page:  350
V-Twin Manufacturing Part Number:  37-9126
Manufacturer:   
Manufacturer Part Number:  016CSPNP
Harley-Davidson & Indian OEM Cross Reference Part Numbers:  2720            
Tags: V-Twin, Harley Davidson, Big Twin 1984-Up, Electrical, Charging System, Stators



