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Prevailing torque lock nuts, Zinc plated grade 8 (grade C) steel

Prevailing torque lock nut

Nut size (A.K.A. diameter) is the size bolt that the nut is used with. The same is true of the thread count. Thus a 1/4"-20 nut fits a 1/4"-20 bolt.

Prevailing torque lock nut diameter

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Prod. # Diameter and Thread count Each price Bag price Bulk price Price Buy

Coarse (standard) thread
8609 1/4"-20 $0.08 / ea $3.66 / 100 $32.80 / 1,000 $0.08 / ea $3.66 / 100 $32.80 / 1,000
8610 5/16"-18 $0.09 / ea $4.92 / 100 $44.10 / 1,000 $0.09 / ea $4.92 / 100 $44.10 / 1,000
8611 3/8"-16 $0.11 / ea $6.52 / 100 $58.60 / 1,000 $0.11 / ea $6.52 / 100 $58.60 / 1,000
8612 7/16"-14 $0.21 / ea $7.87 / 50 $70.10 / 500 $0.21 / ea $7.87 / 50 $70.10 / 500
8613 1/2"-13 $0.22 / ea $8.40 / 50 $75.20 / 500 $0.22 / ea $8.40 / 50 $75.20 / 500
8614 9/16"-12 $0.34 / ea $13.40 / 50 $120.00 / 500 $0.34 / ea $13.40 / 50 $120.00 / 500
8615 5/8"-11 $0.46 / ea $9.24 / 25 $84.80 / 250 $0.46 / ea $9.24 / 25 $84.80 / 250
8616 3/4"-10 $0.66 / ea $12.70 / 25 $117.00 / 250 $0.66 / ea $12.70 / 25 $117.00 / 250
8785 7/8"-9 $2.02 / ea $17.73 / 10 $163.00 / 100 $2.02 / ea $17.73 / 10 $163.00 / 100
8786 1"-8 $3.68 / ea $33.42 / 10 $308.00 / 100 $3.68 / ea $33.42 / 10 $308.00 / 100

Fine thread
8787 1/4"-28 $0.11 / ea $7.41 / 100 $66.70 / 1,000 $0.11 / ea $7.41 / 100 $66.70 / 1,000
8788 5/16"-24 $0.17 / ea $9.92 / 100 $90.30 / 1,000 $0.17 / ea $9.92 / 100 $90.30 / 1,000
8789 3/8"-24 $0.21 / ea $13.89 / 100 $128.00 / 1,000 $0.21 / ea $13.89 / 100 $128.00 / 1,000
8790 7/16"-20 $0.30 / ea $12.56 / 50 $115.00 / 500 $0.30 / ea $12.56 / 50 $115.00 / 500
8791 1/2"-20 $0.40 / ea $16.26 / 50 $149.00 / 500 $0.40 / ea $16.26 / 50 $149.00 / 500
8792 9/16"-18 $0.48 / ea $19.34 / 50 $178.00 / 500 $0.48 / ea $19.34 / 50 $178.00 / 500
8793 5/8"-18 $0.71 / ea $14.84 / 25 $136.00 / 250 $0.71 / ea $14.84 / 25 $136.00 / 250
8794 3/4"-16 $1.06 / ea $22.09 / 25 $203.00 / 250 $1.06 / ea $22.09 / 25 $203.00 / 250
8795 7/8"-14 $2.12 / ea $18.77 / 10 $173.00 / 100 $2.12 / ea $18.77 / 10 $173.00 / 100
8796 ^ 1"-14 $3.70 / ea $33.46 / 10 $308.00 / 100 $3.70 / ea $33.46 / 10 $308.00 / 100

^ NOTE: While 12tpi is the fine thread (UNF) standard, 14tpi is far more common in actual use.

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See also
Prevailing torque lock nut

Metric prevailing torque lock nuts

An all metal lock nut that is often used in high temperature applications. This style of lock nut deforms the threads of the mated fastener.