Description
Grade 8, 3/8-16 x 3/4 long, (16).Each bolt is permanently attached with a set of special cam locking washers.When sufficiently torqued, the washers super hardened external serrated teeth bite into and grip the bottom of the bolt head and the top surface of the header.After being self-locked in this manner, any bolt loosening rotational movement is blocked by the cam locking action created by the washers interfacing matching cams.Loosening the bolt is literally an uphill climb.Vibration that would ordinarily loosen other header bolts actually increases the cam locking tension, keeping the bolt secure.Because this simple cam locking method uses tension instead of friction, contact with oil actually facilitates the cam effect.When changing headers these bolts can be loosened with a normal wrench, re-lubricated then reused.
1947 (47), 1948 (48), 1949 (49), 1950 (50), 1951 (51), 1952 (52), 1953 (53), 1954 (54), 1955 (55), 1956 (56), 1957 (57), 1958 (58), 1959 (59), 1960 (60), 1961 (61), 1962 (62), 1963 (63), 1964 (64), 1965 (65), 1966 (66), 1967 (67), 1968 (68), 1969 (69), 1970 (70), 1971 (71), 1972 (72), 1973 (73), 1974 (74), 1975 (75), 1976 (76), 1977 (77), 1978 (78), 1979 (79), 1980 (80), 1981 (81), 1982 (82), 1983 (83), 1984 (84), 1985 (85), 1986 (86), 1987 (87), 1988 (88), 1989 (89), 1990 (90), 1991 (91), 1992 (92), 1993 (93), 1994 (94), 1995 (95), 1996 (96), 1997 (97), 1998 (98)
Above years shown are used for searches and are not application listings.
NPD Part Number : 9432-2LB
Manufacturer Reference ‘s:66752,
