Jaeger LeCoultre® calibre # 840 casing clamp screw Generic Crystals to fit Swiss Army 2mm (2-1/4") D including shaft)

2mm (2-1/4") D including shaft)

cap height 2

For FHS Hermle clock movement 1171

Designed to open/close screw-back style cases

10 mm is most commonly used for older clocks with wooden pulleys

Jaeger LeCoultre® calibre # 840 casing clamp screw Generic Crystals to fit Swiss Army 2mm (2-1/4") D including shaft)Jaeger LeCoultre casing clamp screw, part # 5166, calibre # 840 casing clamp screw to fit Jaeger LeCoultre calibres: 840 *Perrin Supply Ltd is independent of and not affiliated with or sponsored by Jaeger LeCoultre. Jaeger LeCoultre warranty does not apply to parts supplied byPerrin Supply Ltd. Using generic parts may devalue your watch.