Cylinder head nut
Triumph: Spitfire Mk3, Mk4 and 1500 (1967-1980)
Mini: all models (1959-2000)
Sprite / Midget: with 948 cc, 1098 cc and 1275 cc engines (1958-74)
MG: MGA 1500, 1600, 1622 and De Luxe (1955-62) • MGB (1962-80) • Magnette ZA, ZB and Mark III (1953-61)
TVR: Grantura with BMC B-Series engine (1958-67)
Morris: Oxford (1954-71) • Cowley (1956-59) • Major Elite (1962-64) • ADO17 Landcrab 1800 (1966-75) • Marina 1.8 (1971-78)
Mercedes Benz: L206, L207, L306 and L307 (1967-78)
Austin: A50, A55 and A60 Cambridge (1956-69) • ADO17 Landcrab 1800 (1964-75) • Princess 1.8 (1975-78)
Riley: 1.5, 4/68 and 4/72 (1957-69)
Wolseley: 15/50, 1500, 15/60 and 16/60 (1956-71)
Hanomag: Matador (1966-67) • F20, F25, F30 and F35 (1967-75)
improved version, shouldered
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