Nylon Lock Nuts 304 Stainless Steel

Stainless Steel Nylon Insert Hex Lock Nuts

Lock Nuts with a Nylon Insert in Corrosion Resistant 304 Stainless Steel


  • Hexagonal shape
  • Nylon material creates pressure against the fastener
  • Forces the bottom threads of the fastener against the top threads of the bolt
  • Creates a better hold
  • Locks the nut into place so it will not vibrate loose
  • Retain locking ability up to 250 °F (121 °C)
  • Also referred to as Nylon Lock Nuts or Nyloc Nuts

To prevent or stop galling (also known as seizing or locking-up) on stainless steel fasteners, we recommend using an anti-seize thread lubricant from our line of
MRO Solutions


Nylon Insert
Lock Nut Size
Width Across Flats Height / Thickness
#4 0.251" 0.153"
#6 0.313" 0.188"
#8 0.345" 0.239"
#10 0.376" 0.249"
#12 0.439" 0.328"
1/4" 0.439" 0.328"
5/16" 0.502" 0.359"
3/8" 0.563" 0.468"
7/16" 0.627" 0.468"
1/2" 0.752" 0.609"
9/16"
0.877" 0.656"
5/8" 0.940" 0.765"
3/4" 1.064" 0.890"
7/8" 1.252" 0.999"
1" 1.44" 1.078"
Select Products Below
Product Specifications
Color
Silver
Corrosion Resistant
Yes
Material
304 Stainless Steel
Product Type
Nylon Insert Lock Nut
Thread Direction
Right Hand
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
Select Products Below
Qty
Size
Select Package Quantity
SubTotal
#4-40
SKU #128012
#4-40
SKU #128012
1
$0.15 (0.15/ea)
25
$1.00 (0.04/ea)
100
$3.00 (0.03/ea)
1000
$20.00 (0.02/ea)
 
#4-48
SKU #128022
#4-48
SKU #128022
1
$0.15 (0.15/ea)
25
$1.25 (0.05/ea)
100
$4.00 (0.04/ea)
1000
$30.00 (0.03/ea)
 
#6-32
SKU #128032
#6-32
SKU #128032
1
$0.15 (0.15/ea)
25
$1.25 (0.05/ea)
100
$4.00 (0.04/ea)
1000
$30.00 (0.03/ea)
 
#8-32
SKU #128042
#8-32
SKU #128042
1
$0.15 (0.15/ea)
25
$1.50 (0.06/ea)
100
$5.00 (0.05/ea)
1000
$40.00 (0.04/ea)
 
#8-36
SKU #1280502
#8-36
SKU #1280502
1
$0.15 (0.15/ea)
25
$2.00 (0.08/ea)
100
$7.00 (0.07/ea)
1000
$60.00 (0.06/ea)
 
#10-24
SKU #128052
#10-24
SKU #128052
1
$0.15 (0.15/ea)
25
$1.75 (0.07/ea)
100
$5.00 (0.05/ea)
1000
$40.00 (0.04/ea)
 
#10-32
SKU #128062
#10-32
SKU #128062
1
$0.15 (0.15/ea)
25
$1.75 (0.07/ea)
100
$5.00 (0.05/ea)
1000
$40.00 (0.04/ea)
 
#12-24
SKU #128072
#12-24
SKU #128072
1
$0.15 (0.15/ea)
25
$3.50 (0.14/ea)
100
$13.00 (0.13/ea)
1000
$80.00 (0.08/ea)
 
#12-28
SKU #128082
#12-28
SKU #128082
1
$0.16 (0.16/ea)
25
$3.50 (0.14/ea)
100
$13.00 (0.13/ea)
1000
$100.00 (0.10/ea)
 
1/4"-20
SKU #128092
1/4"-20
SKU #128092
1
$0.15 (0.15/ea)
25
$2.00 (0.08/ea)
100
$7.00 (0.07/ea)
1000
$50.00 (0.05/ea)
 
1/4"-28
SKU #128102
1/4"-28
SKU #128102
1
$0.15 (0.15/ea)
25
$2.50 (0.10/ea)
100
$9.00 (0.09/ea)
1000
$70.00 (0.07/ea)
 
5/16"-18
SKU #128112
5/16"-18
SKU #128112
1
$0.15 (0.15/ea)
25
$2.75 (0.11/ea)
100
$10.00 (0.10/ea)
1000
$80.00 (0.08/ea)
 
5/16"-24
SKU #128122
5/16"-24
SKU #128122
1
$0.15 (0.15/ea)
25
$3.25 (0.13/ea)
100
$11.00 (0.11/ea)
1000
$90.00 (0.09/ea)
 
3/8"-16
SKU #128132
3/8"-16
SKU #128132
1
$0.16 (0.16/ea)
25
$3.50 (0.14/ea)
100
$13.00 (0.13/ea)
1000
$70.00 (0.07/ea)
 
3/8"-24
SKU #128142
3/8"-24
SKU #128142
1
$0.24 (0.24/ea)
25
$5.50 (0.22/ea)
100
$20.00 (0.20/ea)
1000
$160.00 (0.16/ea)
 
7/16"-14
SKU #128152
7/16"-14
SKU #128152
1
$0.39 (0.39/ea)
25
$9.00 (0.36/ea)
100
$32.00 (0.32/ea)
1000
$260.00 (0.26/ea)
 
7/16"-20
SKU #128162
7/16"-20
SKU #128162
1
$0.46 (0.46/ea)
25
$10.50 (0.42/ea)
100
$39.00 (0.39/ea)
1000
$310.00 (0.31/ea)
 
1/2"-13
SKU #128172
1/2"-13
SKU #128172
1
$0.56 (0.56/ea)
25
$12.75 (0.51/ea)
100
$46.00 (0.46/ea)
1000
$370.00 (0.37/ea)
 
1/2"-20
SKU #128182
1/2"-20
SKU #128182
1
$0.59 (0.59/ea)
25
$13.50 (0.54/ea)
100
$49.00 (0.49/ea)
1000
$390.00 (0.39/ea)
 
9/16"-12
SKU #128191-02
9/16"-12
SKU #128191-02
1
$1.49 (1.49/ea)
25
$34.00 (1.36/ea)
100
$124.00 (1.24/ea)
1000
$990.00 (0.99/ea)
 
9/16"-18
SKU #128192
9/16"-18
SKU #128192
1
$0.97 (0.97/ea)
25
$22.25 (0.89/ea)
100
$81.00 (0.81/ea)
1000
$650.00 (0.65/ea)
 
5/8"-11
SKU #128202
5/8"-11
SKU #128202
1
$1.08 (1.08/ea)
25
$24.75 (0.99/ea)
100
$90.00 (0.90/ea)
1000
$720.00 (0.72/ea)
 
5/8"-18
SKU #128212
5/8"-18
SKU #128212
1
$1.19 (1.19/ea)
25
$27.25 (1.09/ea)
100
$99.00 (0.99/ea)
1000
$790.00 (0.79/ea)
 
3/4"-10
SKU #128222
3/4"-10
SKU #128222
1
$1.71 (1.71/ea)
25
$39.25 (1.57/ea)
100
$143.00 (1.43/ea)
1000
$1,140.00 (1.14/ea)
 
3/4"-16
SKU #128232
3/4"-16
SKU #128232
1
$1.72 (1.72/ea)
25
$39.25 (1.57/ea)
100
$143.00 (1.43/ea)
1000
$1,140.00 (1.14/ea)
 
7/8"-9
SKU #128242
7/8"-9
SKU #128242
1
$4.29 (4.29/ea)
25
$98.25 (3.93/ea)
100
$358.00 (3.58/ea)
1000
$2,860.00 (2.86/ea)
 
7/8"-14
SKU #128252
7/8"-14
SKU #128252
1
$4.46 (4.46/ea)
25
$102.25 (4.09/ea)
100
$372.00 (3.72/ea)
1000
$2,980.00 (2.98/ea)
 
1"-8
SKU #128262
1"-8
SKU #128262
1
$6.19 (6.19/ea)
25
$141.75 (5.67/ea)
100
$516.00 (5.16/ea)
1000
$4,130.00 (4.13/ea)