Long rod insulator end fittings include ball and socket couplings, locking devices, and clevis and tongue couplings. Long rod insulator end fittings types, design, dimension, applications, drawings, and pictures are as follows.

Long rod insulator end fittings:
Long rod insulators ball and socket couplings:
Standard IEC 60120
Dimensions of the pin ball
Dimensions of the socket end
Minimal value
Minimal value of the thickness of the locking device

Clearance between the pin ball and the socket end
The pin ball in the socket entry.
The pin ball in the socket interior.

Designated size of coupling
Clearance between the pin ball and the locking device
Dimensions of the twin-balled pins

Long rod insulators locking devices:
Standard IEC 60372
Dimensions of the split – pin (V - Type) for ball and socket couplings

All the dimensions are the same as for standard split-pins, except the value F2replaced by F'2
The dimension Lmax shall be specified by the purchaser of the split-pin.
V -Type Split-Pin in Locking and in Coupling Positions

Split-pin in locking position; Split-pin in coupling position

Dimensions of the W-clip for ball and socket couplings

W-clip in locking and in coupling positions
W-clip in locking position; W-clip in coupling position

Long rod insulator clevis and tongue couplings:
Standard IEC 60471
Dimensions of clevis and tongue coupling
Standard DIN 48 073
Dimensions of connecting bolts
Shape N with cotter pin and disk
Shape S with grooved nut and cotter pin

Long rod insulators with ball and socket couplings
Characteristics of Long Rod Insulators with Ball and Socket Couplings "B" according to the Standard IEC 60433 (1998) and according to the former German Standard DIN 48006

Long rod insulators with clevis and tongue couplings
Characteristics of Long Rod Insulators with Clevis and Tongue Couplings "C" according to the Standard IEC 60433 (1998) and according to the former German Standard DIN 48006

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