Top Lock Nut Grades

A perforated block of steel possessing an internal or female thread intended for use on an external or male thread such as a bolt it also possesses a slight disfigured top which keeps pressure on the inserted bolt to give greater resistance to loosening. Top lock nuts grade c designed to maintain clamp load in temperatures up to 450 f the top of these nuts are crimped to create a locking zone. It is also know as a tech type locknut.

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Strength exceeds grade 5.

Top lock nut grades.

Use with heat treated medium strength steel fasteners like astm a325 structural bolts. Prevailing torque sae lock nut grade 5 steel 3 8 24 zinc plated 100 pk. Strength is similar to grade 5. Nylon insert lock nut flanged 13 nylon insert lock nut with cap 10 reversible lock nut 22 safety wheel lock nut 6 self locking flange nut 20 self locking flange nut serrated 66 self threading lock nut 12 serrated lock nut 26 tooth washer lock nut 55 top lock 364 top lock flange nut 48 top lock jam nut 91 wedge lock.

This custom style locknut incorporates two locking zones at the top of the nut. Strength is similar to grade 8. Use with astm a325 structural bolts. Use with grade 2h and grade c nuts.

Available in coarse and fine threads. It is designed to ovalize and top lock by wrapping the locking zones from the top to the sides. Requires the mating part to protrude a minimum of two threads to fully engage the locking element. Grade b7 threaded stud rod.

They meet ifi standards 100 101 106 107 and 108 and ansi standards b18 16 1m b18 16 2m and b18 16 3m and can be used with higher carbon and alloy steel bolts and studs. Same as grade 5. Prevailing torque sae lock nut grade 5 steel 5 16 24 zinc plated 100 pk 59209 pkg qty 100. Grade c top lock nuts.

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