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Philidas® Turret Nut

The Philidas® Turret Nut, originally designed for the aircraft industry, is now available for commercial use and is often used within the rail industry.

The locking function is located in the turret (collared) section of the nut, which has two slots, one above the other, designed to de-pitch the bolt threads, providing lower prevailing torque and higher re-usability than the Philidas® Industrial type.

Unaffected by chemicals such as oil, petrol or other liquids and vapours and is suitable for use in high or low temperatures.

The Philidas® Turret Nut is available in: ISO coarse, UNF, UNC, BA, BSF, AND BSW threads (2.5mm to 52mm, 4-40 (6BA) to 3″).

Philidas Turret Nuts are manufactured in Steel Grade 8 & 10 in various finishes, and also Stainless Steel.

UNC & UNF Philidas Turret Nuts available from 4-40″ to 3″ in Steel Grade 1 & 3 in various finishes.

BA, BSW & BSF are manufactured to order and are subject to minimum order quantity.

Philidas Turret Nut Technical Drawing

Technical Data & Available Sizes
Thread Diameter A (mm) B (mm) C (mm)
M2.5 5.0 4.5 2.4
M3 5.5 4.75 2.45
M3.5 7.0 5.0 2.5
M4 7.0 5.6 3.3
M5 8.0 6.8 3.9
M6 10.0 8.5 5.0
M8 13.0 10.5 6.0
M10 17.0 13.0 7.6
M12 19.0 15.0 8.5
M14 22.0 17.0 10.0
M16 24.0 19.5 12.0
M18 27.0 22.0 14.0
M20 30.0 24.0 15.5
M22 32.0 26.5 17.5
M24 36.0 29.0 19.0
M27 41.0 33.0 22.0
M30 46.0 39.0 26.0
M33 50.0 43.0 30.0
M36 55.0 47.0 32.5
M39 60.0 50.0 35.0
M42 65.0 54.0 37.5
M45 70.0 58.0 41.0
M48 75.0 62.0 42.5
M52 80.0 67.0 46.5
Size not listed? Please contact us – we may be able to provide it.

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