Steelgrip 00 Belt Fastener - Galvanized Steel, 42" Matched Set, 4 Sets per Box non-sparking What does the AT5US in

What does the AT5US in 12AT5/375US mean

"name":"Gates 5MGT-600-09 Poly Chain GT Carbon Belts - 5M"

"mpn":"14/BK134-D&D"

Specification Value Part Number 1200-P8M-85 Belt Type Timing Belt Tooth Profile P8M RPP (curvilinear) Tooth Pitch 8 mm Number of Teeth 150 Belt Width 85 mm Pitch Length 1200 mm (Pitch Length) Construction Chloroprene (Neoprene)

Steelgrip 00 Belt Fastener - Galvanized Steel, 42" Matched Set, 4 Sets per Box non-sparking What does the AT5US inSteelgrip 00 Belt Fastener Matched Set is a hook style alligator lacing splice kit pre sized for a 42 inch belt width. For belts 1 16 inch on pulleys 1 inch or larger. Galvanized Steel construction. Pack contains 4 matched sets (top plate, bottom plate, and corrugated hinge pin) with installation instructions. What is in the package: Multiple sets of alligator style lacing in cross scored strips Corrugated hinge pin Gauge pin Installation instructions