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FmlTubeNuts PRIMARY
Unit of Measure
1 

Item #

Tube Size

Thread Diameter

Thread Pitch

Old FMSI No.

Edelmann #

Weatherhead #

41S-3 (Formerly 3428) N/A 3/16 in N/A 3/8 in N/A 24 T.P.I N/A 3428 N/A 141030 N/A 1110X3
41S-4 (Formerly 3429) N/A 1/4 in N/A 7/16 in N/A 20 T.P.I N/A 3429 N/A 141040 N/A 1110X4
41S-5 (Formerly 3430) N/A 5/16 in N/A 1/2 in N/A 20 T.P.I N/A 3730 N/A 141050 N/A 1110X5
41S-6 (Formerly 3431) N/A 3/8 in N/A 5/8 in N/A 18 T.P.I N/A N/A N/A
41S-8 (Formerly 3432) N/A 1/2 in N/A 3/4 in N/A 18 T.P.I N/A 3432 N/A 141080 N/A 1110X8
3489 N/A 5/16 in N/A 1/2 in N/A 20 T.P.I N/A N/A N/A
Unit of Measure
1