5 8 18 nylon lock nut

  • Item # 26LH97
  • Mfr. Model # U12421.062.0002
  • UNSPSC # 31161716
  • Catalog Page # 2082 2082

Country of Origin Varies. Country of Origin is subject to change.

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Lock Nut: Inch, Black Oxide, 5/8"-18 Thread Size, Nylon Insert, Std Hex, Steel, Grade 8, 10 PK

  • Item # 26LH97
  • Mfr. Model # U12421.062.0002
  • UNSPSC # 31161716
  • Catalog Page # 2082 2082

Country of Origin Varies. Country of Origin is subject to change.

Technical Specs

  • Item Lock Nut
  • Finish Black Oxide
  • Material Steel
  • Material Grade/Class Grade 8
  • Thread Size 5/8"-18
  • Hex Width 15/16 in
  • Hex Height 49/64 in
  • Lock Type Nylon Insert
  • Dimensional Standards ASME B18.16.6
  • System of Measurement Inch
  • Hex Type Standard Hex
  • Thread Direction Right Hand
  • Pack Size Small Pack
  • Thread Type Fine

Alternate Products

5 8 18 nylon lock nut

Note: Stainless lock nuts may require extra care during installation to avoid galling (seizing up). More info.

Prod. # Diameter and Thread countEach priceBag priceBulk price Price Buy

Fine thread

18647 5/8"-18 $3.23 / ea $64.80 / 25 $578.00 / 250 $3.23 / ea $64.80 / 25 $578.00 / 250

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5 8 18 nylon lock nut

5 8 18 nylon lock nut

Product details

Bolt Depot Product #: 18647
Units: US
Category: Nuts
Subcategory: Hex nylon insert lock nuts
Material: Stainless steel
Grade: 316
Thread direction: Right hand
Thread density: Fine
Diameter: 5/8"
Thread count: 18
Width across the flats: 15/16"
Width across the flats Min: 0.922"
Width across the flats Max: 0.940"
Height Min: 0.735"
Height Max: 0.765"
Hex Height Min: 0.593"
Dimensional standard: ASME B18.16.6

5 8 18 nylon lock nut

Anti-seize

Thread locker prevents fasteners from loosening after installation. Anti-seize helps prevent seizing (galling) during installation.

5 8 18 nylon lock nut

Flat washers, Stainless steel 316

General use flat washer

Can you use nylon lock nuts more than once?

Since the nylon bounces back to its original form when removed from a bolt, it can be reused many times. However, these nuts stop functioning as locknuts at temperatures higher than 250 degrees.

What grade are nylon lock nuts?

Grade C nylon insert lock nuts are hex nuts that have a nylon collar insert in one end of the nut. The nylon insert increases friction on the screw thread, which resists loosening.

What are nylon insert lock nuts used for?

Nylon insert lock nuts—also known as nylon nuts and stop nuts—are a prevailing torque, locking nut that resists loosening caused by vibration and normal use. Unlike free spinning hex nuts, lock nuts make use of a deforming elastic or metal material to stay in position against torque and shock.

How many times can you reuse a nylon lock nut?

These are found in lower temperature applications, typically less than 177°C due to the polymers within the nylon lock nut. They provide desirable reusability and can be used assuredly up to fifteen times after an initial fastening.