CMK1406 SCREW.  BMC Rocker cover screw.

Full thread ¹/₄” UNF screw suitable for the small holed rocker cover gasket. 

Genuine Multipart Leyland part.

Fitted to some of the last of the Nuffield 10/60 tractrors from engine number D80181 onwards and to Leyland four cylinder and six cylinder engines;

• BMC 3.4TD 4 cylinder engine
• BMC 3.8TD 4 cylinder engine
• BMC 5.7VD 6 cylinder engine
• Leyland 498 4 cylinder engine
• Leyland 698  6 cylinder engine

See item 7 in the illustration.

Note: for later engines with the large holed rocker cover gasket you will need  The “shouldered” type rocker cover screw NKJ96. 

Fitted to:

• Nuffield 10/60
• Leyland 344, 384, 255, 270, 262, 272, 462, 472, 282, 482
• Leyland 285, 2100, 485, 4100