Featured Categories

  • Tools & Machining
  • Shipping, Packaging & Office Supplies
  • Plumbing
  • Safety

Shop Categories

  • Abrasives & Polishers
  • Adhesives & Tapes
  • Electrical Supplies
  • Electronics
  • Fasteners
  • Food Service & Restaurant Supplies
  • Furniture, Linens & Decor
  • Grounds & Outdoor
  • Hardware & Building Materials
  • Heating & Cooling
  • Janitorial & Cleaning Supplies
  • Lab Equipment & Supplies
  • Lighting
  • Material Handling
  • Medical & Personal Care
  • Paint, Coatings & Supplies
  • Plumbing
  • Power Transmission
  • Pumps
  • Raw Materials
  • Safety
  • Shipping, Packaging & Office Supplies
  • Storage & Workspace
  • Test Instruments & Gauges
  • Tools & Machining
  • Vehicle Maintenance
  • Welding, Soldering & Brazing
  • About Us
  • Promo Codes
  • Contact Us
Added to Cart
Skip to Main Content
FREE Shipping on orders over $50 after you . Restrictions Apply
Zoro Homepage
Close icon
Clipboard Icon Clipboard Icon Quick Order
Cart Icon
0
Cart Icon
0
Cart
  • Low prices on everyday needs. Shop Zoro Select
  • Don't miss these limited time offers. Shop All Deals
  • Get 30 days to pay with Net 30. Apply Now
  1. Home
  2. /
  3. Fasteners
  4. /
  5. Nuts
  6. /
  7. Lock Nuts
Search Feedback

Lock Nuts (9,500+ items) - Page 142

Newport Fasteners Serrated Lock Nut, 5/16"-18, Steel, Case Hardened, Zinc Plated, 0.17 in Ht, 3000 PK 795882-BR-3000
Newport Fasteners

Serrated Lock Nut, 5/16"-18, Steel, Case Hardened, Zinc Plated, 0.17 in Ht, 3000 PK

Zoro # G506308799
Mfr # 795882-BR-3000
product price:  $301.99
/pk 3000, $0.10/ea
Zoro Select External Tooth K-Lock Lock Nut, #6-32, Steel, Zinc Plated, 0.102 in Ht, 5000 PK 0604NK
Zoro Select

External Tooth K-Lock Lock Nut, #6-32, Steel, Zinc Plated, 0.102 in Ht, 5000 PK

Zoro # G2446611
Mfr # 0604NK
product price:  $185.99
/pk 5000, $0.04/ea
X1 Tools 7/8-14 Ultra Hi Performance Black-Oxide Steel Nylon-Insert Locknuts, 12PK X1E-FAS-NUT-LOC-1244x12
X1 Tools

7/8-14 Ultra Hi Performance Black-Oxide Steel Nylon-Insert Locknuts, 12PK

Zoro # G422860708
Mfr # X1E-FAS-NUT-LOC-1244x12
product price:  $75.85
/pk 12, $6.32/ea
X1 Tools 5/8-11 Hi Performance Zinc-Plated Steel Thin-Profile Nylon-Insert Locknuts, 100PK X1E-FAS-NUT-LOC-3310x100
X1 Tools

5/8-11 Hi Performance Zinc-Plated Steel Thin-Profile Nylon-Insert Locknuts, 100PK

Zoro # G522852894
Mfr # X1E-FAS-NUT-LOC-3310x100
product price:  $548.99
/pk 100, $5.49/ea
X1 Tools 7/16-14 Corrosion-Resistant 18-8 Stainless Steel Nylon-Insert Locknuts, 20PK X1E-FAS-NUT-LOC-2131x20
X1 Tools

7/16-14 Corrosion-Resistant 18-8 Stainless Steel Nylon-Insert Locknuts, 20PK

Zoro # G222863169
Mfr # X1E-FAS-NUT-LOC-2131x20
product price:  $22.79
/pk 20, $1.14/ea
X1 Tools 3/4-10 Hi Performance Zinc-Plated Steel Thin-Profile Nylon-Insert Locknuts X1E-FAS-NUT-LOC-3314x1
X1 Tools

3/4-10 Hi Performance Zinc-Plated Steel Thin-Profile Nylon-Insert Locknuts

Zoro # G422865840
Mfr # X1E-FAS-NUT-LOC-3314x1
product price:  $15.95
/ea
X1 Tools 1 1/8-7 Hi Performance Zinc-Plated Steel Thin-Profile Nylon-Insert Locknuts, 200PK X1E-FAS-NUT-LOC-3324x200
X1 Tools

1 1/8-7 Hi Performance Zinc-Plated Steel Thin-Profile Nylon-Insert Locknuts, 200PK

Zoro # G522862008
Mfr # X1E-FAS-NUT-LOC-3324x200
product price:  $7,540.99
/pk 200, $37.70/ea
X1 Tools 12-24 Performance Zinc-Plated Steel Nylon-Insert Locknuts X1E-FAS-NUT-LOC-1926x1
X1 Tools

12-24 Performance Zinc-Plated Steel Nylon-Insert Locknuts

Zoro # G322867609
Mfr # X1E-FAS-NUT-LOC-1926x1
product price:  $0.63
/ea
X1 Tools 1 1/8-7 Corrosion-Resistant 18-8 Stainless Steel Thin-Profile Nylon-Insert Locknuts X1E-FAS-NUT-LOC-3758x1
X1 Tools

1 1/8-7 Corrosion-Resistant 18-8 Stainless Steel Thin-Profile Nylon-Insert Locknuts

Zoro # G222855263
Mfr # X1E-FAS-NUT-LOC-3758x1
product price:  $43.45
/ea
X1 Tools 1/2-20 Corrosion-Resistant 316 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 1000PK X1E-FAS-NUT-LOC-3932x1000
X1 Tools

1/2-20 Corrosion-Resistant 316 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 1000PK

Zoro # G022860047
Mfr # X1E-FAS-NUT-LOC-3932x1000
product price:  $3,124.99
/pk 1000, $3.12/ea
X1 Tools 5/16-18 Corrosion-Resistant 316 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 1000PK X1E-FAS-NUT-LOC-3918x1000
X1 Tools

5/16-18 Corrosion-Resistant 316 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 1000PK

Zoro # G622852053
Mfr # X1E-FAS-NUT-LOC-3918x1000
product price:  $788.99
/pk 1000, $0.79/ea
X1 Tools 5/8-18 UHP Yellow Zinc Plated Grade 8 Steel Thin-Profile Nylon-Insert Locknuts, 50PK X1E-FAS-NUT-LOC-3032x50
X1 Tools

5/8-18 UHP Yellow Zinc Plated Grade 8 Steel Thin-Profile Nylon-Insert Locknuts, 50PK

Zoro # G422865529
Mfr # X1E-FAS-NUT-LOC-3032x50
product price:  $209.99
/pk 50, $4.20/ea
X1 Tools 10-24 Performance Black-Corrosion-Resistant-Coated Steel Nylon-Insert Locknuts, 2PK X1E-FAS-NUT-LOC-2014x2
X1 Tools

10-24 Performance Black-Corrosion-Resistant-Coated Steel Nylon-Insert Locknuts, 2PK

Zoro # G422847785
Mfr # X1E-FAS-NUT-LOC-2014x2
product price:  $14.15
/pk 2, $7.08/ea
X1 Tools 5/16-24 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 1000PK X1E-FAS-NUT-LOC-1934x1000
X1 Tools

5/16-24 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 1000PK

Zoro # G422851591
Mfr # X1E-FAS-NUT-LOC-1934x1000
product price:  $155.99
/pk 1000, $0.16/ea
X1 Tools 1/2-20 Black-Oxide C.R. 18-8 Stainless Steel Nylon-Insert Locknuts, 2PK X1E-FAS-NUT-LOC-2250x2
X1 Tools

1/2-20 Black-Oxide C.R. 18-8 Stainless Steel Nylon-Insert Locknuts, 2PK

Zoro # G222852453
Mfr # X1E-FAS-NUT-LOC-2250x2
product price:  $18.79
/pk 2, $9.40/ea
X1 Tools 4-40 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 25PK X1E-FAS-NUT-LOC-1914x25
X1 Tools

4-40 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 25PK

Zoro # G922860505
Mfr # X1E-FAS-NUT-LOC-1914x25
product price:  $3.15
/pk 25, $0.13/ea
X1 Tools 1/2-13 Performance Black-Corrosion-Resistant-Coated Steel Thin-Profile Nylon-Insert Locknuts, 8PK X1E-FAS-NUT-LOC-3624x8
X1 Tools

1/2-13 Performance Black-Corrosion-Resistant-Coated Steel Thin-Profile Nylon-Insert Locknuts, 8PK

Zoro # G322845638
Mfr # X1E-FAS-NUT-LOC-3624x8
product price:  $41.75
/pk 8, $5.22/ea
X1 Tools 1/2-20 Ultra Hi Performance Black-Oxide Steel Nylon-Insert Locknuts, 10PK X1E-FAS-NUT-LOC-1228x10
X1 Tools

1/2-20 Ultra Hi Performance Black-Oxide Steel Nylon-Insert Locknuts, 10PK

Zoro # G822846135
Mfr # X1E-FAS-NUT-LOC-1228x10
product price:  $21.85
/pk 10, $2.19/ea
Oxoxo M10-1.5 Din 985 Metric Class 8 Nylon Insert Hex Locknut Black Oxide and Oil, 500PK 558600
Oxoxo

M10-1.5 Din 985 Metric Class 8 Nylon Insert Hex Locknut Black Oxide and Oil, 500PK

Zoro # G322700548
Mfr # 558600
product price:  $129.99
/pk 500, $0.26/ea
X1 Tools 8-32 Corrosion-Resistant 18-8 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 500PK X1E-FAS-NUT-LOC-3714x500
X1 Tools

8-32 Corrosion-Resistant 18-8 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 500PK

Zoro # G722855626
Mfr # X1E-FAS-NUT-LOC-3714x500
product price:  $91.69
/pk 500, $0.18/ea
X1 Tools 1-14 Ultra Hi Performance Black-Oxide Steel Nylon-Insert Locknuts, 6PK X1E-FAS-NUT-LOC-1248x6
X1 Tools

1-14 Ultra Hi Performance Black-Oxide Steel Nylon-Insert Locknuts, 6PK

Zoro # G522860660
Mfr # X1E-FAS-NUT-LOC-1248x6
product price:  $54.59
/pk 6, $9.10/ea
X1 Tools 4-40 Black-Oxide Corrosion-Resistant 18-8 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 12PK X1E-FAS-NUT-LOC-3810x12
X1 Tools

4-40 Black-Oxide Corrosion-Resistant 18-8 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 12PK

Zoro # G822846074
Mfr # X1E-FAS-NUT-LOC-3810x12
product price:  $5.15
/pk 12, $0.43/ea
X1 Tools 1/2-13 Ultra H.P. Yellow Zinc Plated Grade 8 Steel Nylon-Insert Locknuts, 400PK X1E-FAS-NUT-LOC-1026x400
X1 Tools

1/2-13 Ultra H.P. Yellow Zinc Plated Grade 8 Steel Nylon-Insert Locknuts, 400PK

Zoro # G122844701
Mfr # X1E-FAS-NUT-LOC-1026x400
product price:  $903.99
/pk 400, $2.26/ea
X1 Tools 10-32 Performance Black-Corrosion-Resistant-Coated Steel Thin-Profile Nylon-Insert Locknuts, 100PK X1E-FAS-NUT-LOC-3616x100
X1 Tools

10-32 Performance Black-Corrosion-Resistant-Coated Steel Thin-Profile Nylon-Insert Locknuts, 100PK

Zoro # G122851372
Mfr # X1E-FAS-NUT-LOC-3616x100
product price:  $401.99
/pk 100, $4.02/ea
X1 Tools 7/8-9 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 25PK X1E-FAS-NUT-LOC-1960x25
X1 Tools

7/8-9 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 25PK

Zoro # G922850476
Mfr # X1E-FAS-NUT-LOC-1960x25
product price:  $90.39
/pk 25, $3.62/ea
X1 Tools 3/8-16 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 2PK X1E-FAS-NUT-LOC-1936x2
X1 Tools

3/8-16 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 2PK

Zoro # G022850307
Mfr # X1E-FAS-NUT-LOC-1936x2
product price:  $1.15
/pk 2, $0.58/ea
X1 Tools 1/2-20 Black-Oxide C.R. 18-8 Stainless Steel Nylon-Insert Locknuts, 75PK X1E-FAS-NUT-LOC-2250x75
X1 Tools

1/2-20 Black-Oxide C.R. 18-8 Stainless Steel Nylon-Insert Locknuts, 75PK

Zoro # G922861403
Mfr # X1E-FAS-NUT-LOC-2250x75
product price:  $445.99
/pk 75, $5.95/ea
X1 Tools 10-24 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 75PK X1E-FAS-NUT-LOC-1922x75
X1 Tools

10-24 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 75PK

Zoro # G822852501
Mfr # X1E-FAS-NUT-LOC-1922x75
product price:  $13.99
/pk 75, $0.19/ea
X1 Tools 3/8-24 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 6PK X1E-FAS-NUT-LOC-1938x6
X1 Tools

3/8-24 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 6PK

Zoro # G122862682
Mfr # X1E-FAS-NUT-LOC-1938x6
product price:  $2.19
/pk 6, $0.37/ea
X1 Tools 5/16-24 Corrosion-Resistant 18-8 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 1000PK X1E-FAS-NUT-LOC-3726x1000
X1 Tools

5/16-24 Corrosion-Resistant 18-8 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 1000PK

Zoro # G622845338
Mfr # X1E-FAS-NUT-LOC-3726x1000
product price:  $381.99
/pk 1000, $0.38/ea
X1 Tools 3/8-24 Black-Oxide Corrosion-Resistant 18-8 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 75PK X1E-FAS-NUT-LOC-3826x75
X1 Tools

3/8-24 Black-Oxide Corrosion-Resistant 18-8 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 75PK

Zoro # G322851585
Mfr # X1E-FAS-NUT-LOC-3826x75
product price:  $86.89
/pk 75, $1.16/ea
Oxoxo 1/4-20 K Lock Nut 18 8 Stainless Steel Black Oxide and Oil, 1000PK 440266
Oxoxo

1/4-20 K Lock Nut 18 8 Stainless Steel Black Oxide and Oil, 1000PK

Zoro # G122665429
Mfr # 440266
product price:  $479.99
/pk 1000, $0.48/ea
X1 Tools 1/4-28 Corrosion-Resistant 18-8 Stainless Steel Nylon-Insert Locknuts, 400PK X1E-FAS-NUT-LOC-2126x400
X1 Tools

1/4-28 Corrosion-Resistant 18-8 Stainless Steel Nylon-Insert Locknuts, 400PK

Zoro # G922844918
Mfr # X1E-FAS-NUT-LOC-2126x400
product price:  $115.99
/pk 400, $0.29/ea
Oxoxo M4-0.7 Metric Conical K Keps Lock Nut Zinc and Bake, 5000PK 637823
Oxoxo

M4-0.7 Metric Conical K Keps Lock Nut Zinc and Bake, 5000PK

Zoro # G522683702
Mfr # 637823
product price:  $763.99
/pk 5000, $0.15/ea
X1 Tools 7/16-20 UHP Black-Oxide Grade 8 Steel Thin-Profile Nylon-Insert Locknuts, 1000PK X1E-FAS-NUT-LOC-3222x1000
X1 Tools

7/16-20 UHP Black-Oxide Grade 8 Steel Thin-Profile Nylon-Insert Locknuts, 1000PK

Zoro # G722848772
Mfr # X1E-FAS-NUT-LOC-3222x1000
product price:  $2,413.99
/pk 1000, $2.41/ea
X1 Tools M12 x 1.75 mm Performance Zinc-Plated Steel Nylon-Insert Locknuts, 10PK X1E-FAS-NUT-LOC-1982x10
X1 Tools

M12 x 1.75 mm Performance Zinc-Plated Steel Nylon-Insert Locknuts, 10PK

Zoro # G222847022
Mfr # X1E-FAS-NUT-LOC-1982x10
product price:  $13.19
/pk 10, $1.32/ea
Lock Nuts (9,500+ items) - Page 142
  • First
  • Previous
  • 142
    of 275 pages
  • Next
  • Last

About Lock Nuts

Lock Nuts are a type of fastener that is designed to prevent a nut from coming loose when it is secured with a bolt. They are usually threaded and tightened onto the bolt to create a secure connection, which helps keep the nuts from vibrating off. Lock Nuts come in many different varieties and can be used in any number of applications.

Types of Lock Nuts

The most common types of lock nuts are nylock flange nuts, stainless steel lock nuts, and steel lock nuts. Depending on the application they will be used for, they can vary in size, shape, threading type, material composition or even locking mechanism.

How Lock Nuts are Made

Lock Nuts are typically made using either metal or plastic components and have threads cut into them so that they can be screwed onto bolts. They also often include an additional locking element such as an O-ring or nylon insert to help prevent loosening due to vibration or shock.

Industries that use Lock Nuts

Lock Nuts are commonly used in industries such as automotive repair, manufacturing, construction and plumbing. Professionals who work in these fields rely on these fasteners to securely hold parts together during assembly processes and repairs.

Find the Lock Nuts You Need at Zoro

Looking for a specific item? Use our robust search tool to find it by name or keyword, or use our handy filters to narrow down our full assortment. You can also check out our whole selection of fasteners, along with other tools or supplies to ensure you have all you need to tackle the job, especially if you're taking on a DIY project for the first time.
Plus, when you shop at Zoro, you'll always enjoy competitive prices on tons of great brands you know and trust. We make the shopping experience as fast and seamless as possible with free shipping on orders over $50 for registered users, Net 30 payment terms for qualifying customers, and an unparalleled customer service experience.

Related Categories

Hex NutsFlange NutsWing NutsCoupling NutsGeneral Washers
Hex Head Cap ScrewsSocket Head Cap ScrewsMachine ScrewsLock WashersSelf-Tapping Screws
10-32 stainless nut10-24 nylock10-32 lock nut10-32 washer10-32 nylon nut
10-24 washer10-24 nylon10-24 lock nut10-32 nut1 1 2 lock nut

Sign Up & Save

Take 10% off your next order when you sign up for Zoro emails. Subscribe now to receive your promo code via email.

Follow Us

  • Facebook
  • YouTube
  • LinkedIn
  • Instagram
Every Part Plays a Part

Information

  • About Us
  • Accessibility
  • Careers
  • Inclusion
  • Giving Back
  • Resource Hub
  • Returns
  • Shipping

Shopping

  • Brands
  • Collections
  • My Account
  • Payments
  • Promo Codes
  • Sitemap
  • Track My Order

Services

  • Customer Service
  • FAQs
  • Net 30 Terms
  • Reseller Program
  • Sell on Zoro
  • Participate in Research

Zoro, Inc

Connect

Customer Service From Real People

  • Phone: (855) 289-9676
  • Contact Us

© 2011-2026 Zoro Tools, Inc. All rights reserved.
  • Terms & Conditions
  • Terms of Access
  • Privacy Policy
Zoro, Inc