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contre-écrou
construct.	check nut, lock nut; safety nut
cycl.	locknut; lockring
industr.	check nut
mech.eng.	counter nut; jam nut; lock; lock nut; black nut
sport.	checknut
contre ecrou
forestr.	nylock nut

contre-écrou: 3 phrases in 2 subjects

Technology	2
Transport	1