ARP Screw
Product number:
313538
flywheel to crankshaft - uprated version with 12 point head and 7/16" UNF thread
Product Information "ARP Screw"
Triumph: TR5, TR250 and TR6 (1967-76) • GT6 (1966-73) • Spitfire 1500 (1974-80)
Sprite / Midget: Midget 1500 (1974-79)
flywheel to crankshaft - uprated version with 12 point head and 7/16" UNF thread
ARP is one of the most renowned screw manufacturers for motorsport: well-known racing teams from Formula 1, Nascar and Indycar series trust the excellent quality.
The threads are rolled into high-strength steel. This non-cutting process does not interrupt the fibre flow, unlike thread cutting. On the contrary, the cold forming process hardens the structure of the surface.
The benefit lies in the high safety reserves of the most heavily loaded components in the engine.