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
  • Deals
  • Contact Us
Added to Cart
Skip to Main Content Accessibility Statement
FREE SHIPPING on orders over $50 after you . Restrictions Apply
Zoro Homepage
Close icon
Clipboard Icon Clipboard Icon Quick Order
User Headset Icon User Headset Icon Customer Service
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

Lock Nuts (10,000+ items) - Page 55

X1 Tools 9/16-18 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 10PK X1E-FAS-NUT-LOC-1950x10
X1 Tools

9/16-18 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 10PK

Zoro # G922863506
Mfr # X1E-FAS-NUT-LOC-1950x10
product price:  $16.85
/pk 10, $1.69/ea
X1 Tools 3/4-10 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 2PK X1E-FAS-NUT-LOC-1956x2
X1 Tools

3/4-10 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 2PK

Zoro # G522856038
Mfr # X1E-FAS-NUT-LOC-1956x2
product price:  $4.39
/pk 2, $2.20/ea
X1 Tools M4 x 0.7 mm Performance Zinc-Plated Steel Nylon-Insert Locknuts, 20PK X1E-FAS-NUT-LOC-1972x20
X1 Tools

M4 x 0.7 mm Performance Zinc-Plated Steel Nylon-Insert Locknuts, 20PK

Zoro # G122854281
Mfr # X1E-FAS-NUT-LOC-1972x20
product price:  $3.29
/pk 20, $0.16/ea
Zoro Select Lock Nut, 3/8"-16, Nylon, Zinc Plated, 0.335 in Ht, 1000 PK 37NST
Zoro Select

Lock Nut, 3/8"-16, Nylon, Zinc Plated, 0.335 in Ht, 1000 PK

Zoro # G2451405
Mfr # 37NST
product price:  $85.79
/pk 1000, $0.09/ea
X1 Tools 5/16-24 Corrosion-Resistant 316 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 12PK X1E-FAS-NUT-LOC-3920x12
X1 Tools

5/16-24 Corrosion-Resistant 316 Stainless Steel Thin-Profile Nylon-Insert Locknuts, 12PK

Zoro # G722862105
Mfr # X1E-FAS-NUT-LOC-3920x12
product price:  $17.39
/pk 12, $1.45/ea
X1 Tools 1/4-20 Ultra Hi Performance Black-Oxide Steel Nylon-Insert Locknuts, 4PK X1E-FAS-NUT-LOC-1210x4
X1 Tools

1/4-20 Ultra Hi Performance Black-Oxide Steel Nylon-Insert Locknuts, 4PK

Zoro # G722855152
Mfr # X1E-FAS-NUT-LOC-1210x4
product price:  $2.85
/pk 4, $0.71/ea
X1 Tools 1/2-13 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 4PK X1E-FAS-NUT-LOC-1944x4
X1 Tools

1/2-13 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 4PK

Zoro # G222858660
Mfr # X1E-FAS-NUT-LOC-1944x4
product price:  $3.29
/pk 4, $0.82/ea
Zoro Select Lock Nut, 3/8"-24, 18-8 Stainless Steel, Not Graded, 125 PK 38NXLTH188
Zoro Select

Lock Nut, 3/8"-24, 18-8 Stainless Steel, Not Graded, 125 PK

Zoro # G2454905
Mfr # 38NXLTH188
product price:  $386.99
/pk 125, $3.10/ea
X1 Tools M10 x 1.5 mm HP Black-Corrosion-Resistant-Coated Steel Nylon-Insert Locknuts, 250PK X1E-FAS-NUT-LOC-1818x250
X1 Tools

M10 x 1.5 mm HP Black-Corrosion-Resistant-Coated Steel Nylon-Insert Locknuts, 250PK

Zoro # G622867620
Mfr # X1E-FAS-NUT-LOC-1818x250
product price:  $1,741.99
/pk 250, $6.97/ea
Zoro Select Self Clinching Lock Nut, #4-40, Steel, Zinc Plated, 10000 PK 04-0NCL
Zoro Select

Self Clinching Lock Nut, #4-40, Steel, Zinc Plated, 10000 PK

Zoro # G2437423
Mfr # 04-0NCL
product price:  $794.99
/pk 10000, $0.08/ea
X1 Tools 1/2-13 Hi-Performance Black-Oxide Steel Nylon-Insert Locknuts, 2PK X1E-FAS-NUT-LOC-1726x2
X1 Tools

1/2-13 Hi-Performance Black-Oxide Steel Nylon-Insert Locknuts, 2PK

Zoro # G622857959
Mfr # X1E-FAS-NUT-LOC-1726x2
product price:  $2.59
/pk 2, $1.30/ea
Zoro Select Self Clinching Lock Nut, 5/16"-18, Steel, Zinc Plated, 4000 PK 31-3NCL
Zoro Select

Self Clinching Lock Nut, 5/16"-18, Steel, Zinc Plated, 4000 PK

Zoro # G2437834
Mfr # 31-3NCL
product price:  $1,288.99
/pk 4000, $0.32/ea
X1 Tools 1-14 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 500PK X1E-FAS-NUT-LOC-1966x500
X1 Tools

1-14 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 500PK

Zoro # G722855725
Mfr # X1E-FAS-NUT-LOC-1966x500
product price:  $3,996.99
/pk 500, $7.99/ea
X1 Tools 1/2-20 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 100PK X1E-FAS-NUT-LOC-1946x100
X1 Tools

1/2-20 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 100PK

Zoro # G822847187
Mfr # X1E-FAS-NUT-LOC-1946x100
product price:  $72.49
/pk 100, $0.72/ea
X1 Tools 1-14 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 25PK X1E-FAS-NUT-LOC-1966x25
X1 Tools

1-14 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 25PK

Zoro # G622848322
Mfr # X1E-FAS-NUT-LOC-1966x25
product price:  $144.99
/pk 25, $5.80/ea
X1 Tools M3 x 0.5 mm Performance Zinc-Plated Steel Thin-Profile Nylon-Insert Locknuts X1E-FAS-NUT-LOC-3476x1
X1 Tools

M3 x 0.5 mm Performance Zinc-Plated Steel Thin-Profile Nylon-Insert Locknuts

Zoro # G522865429
Mfr # X1E-FAS-NUT-LOC-3476x1
product price:  $1.59
/ea
X1 Tools M14 x 2 mm Performance Zinc-Plated Steel Nylon-Insert Locknuts, 400PK X1E-FAS-NUT-LOC-1984x400
X1 Tools

M14 x 2 mm Performance Zinc-Plated Steel Nylon-Insert Locknuts, 400PK

Zoro # G322864745
Mfr # X1E-FAS-NUT-LOC-1984x400
product price:  $695.99
/pk 400, $1.74/ea
X1 Tools 7/8-14 Corrosion-Resistant 316 Stainless Steel Nylon-Insert Locknuts, 1000PK X1E-FAS-NUT-LOC-2358x1000
X1 Tools

7/8-14 Corrosion-Resistant 316 Stainless Steel Nylon-Insert Locknuts, 1000PK

Zoro # G622852480
Mfr # X1E-FAS-NUT-LOC-2358x1000
product price:  $23,866.99
/pk 1000, $23.87/ea
Oxoxo M3-0.50 Din 985 Metric Class 10 Nylon Insert Hex Locknut Zinc, 2500PK 627655
Oxoxo

M3-0.50 Din 985 Metric Class 10 Nylon Insert Hex Locknut Zinc, 2500PK

Zoro # G122698977
Mfr # 627655
product price:  $138.99
/pk 2500, $0.06/ea
Zoro Select Nylon Insert Lock Nut, 7/8"-9, Steel, Grade 2, Zinc Plated, 1 in Ht, 5 PK U12300.087.0001
Zoro Select

Nylon Insert Lock Nut, 7/8"-9, Steel, Grade 2, Zinc Plated, 1 in Ht, 5 PK

Zoro # G5332582
Mfr # U12300.087.0001
product price:  $5.09
/pk 5, $1.02/ea
X1 Tools 3/4-16 Corrosion-Resistant 316 Stainless Steel Nylon-Insert Locknuts, 75PK X1E-FAS-NUT-LOC-2354x75
X1 Tools

3/4-16 Corrosion-Resistant 316 Stainless Steel Nylon-Insert Locknuts, 75PK

Zoro # G422853205
Mfr # X1E-FAS-NUT-LOC-2354x75
product price:  $433.99
/pk 75, $5.79/ea
X1 Tools 5/16-18 Black-Oxide C.R. 18-8 Stainless Steel Nylon-Insert Locknuts, 2PK X1E-FAS-NUT-LOC-2236x2
X1 Tools

5/16-18 Black-Oxide C.R. 18-8 Stainless Steel Nylon-Insert Locknuts, 2PK

Zoro # G522855017
Mfr # X1E-FAS-NUT-LOC-2236x2
product price:  $2.29
/pk 2, $1.15/ea
Zoro Select Lock Nut, 1-1/2"-12, Steel, Grade C, Wax, 0.843 in Ht, 10 PK 151NO
Zoro Select

Lock Nut, 1-1/2"-12, Steel, Grade C, Wax, 0.843 in Ht, 10 PK

Zoro # G2447424
Mfr # 151NO
product price:  $139.99
/pk 10, $14.00/ea
Zoro Select Lock Nut, M3.5-6.00, Steel, Class 4, Zinc Plated, 10000 PK M3.5D439B
Zoro Select

Lock Nut, M3.5-6.00, Steel, Class 4, Zinc Plated, 10000 PK

Zoro # G9081818
Mfr # M3.5D439B
product price:  $59.39
X1 Tools 7/8-14 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 50PK X1E-FAS-NUT-LOC-1962x50
X1 Tools

7/8-14 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 50PK

Zoro # G222847732
Mfr # X1E-FAS-NUT-LOC-1962x50
product price:  $178.99
/pk 50, $3.58/ea
X1 Tools 5/8-18 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 400PK X1E-FAS-NUT-LOC-1954x400
X1 Tools

5/8-18 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 400PK

Zoro # G522851873
Mfr # X1E-FAS-NUT-LOC-1954x400
product price:  $525.99
/pk 400, $1.31/ea
X1 Tools 9/16-18 Ultra Hi Performance Grade 8 Steel Nylon-Insert Locknuts X1E-FAS-NUT-LOC-1432x1
X1 Tools

9/16-18 Ultra Hi Performance Grade 8 Steel Nylon-Insert Locknuts

Zoro # G422852437
Mfr # X1E-FAS-NUT-LOC-1432x1
product price:  $4.15
/ea
X1 Tools 7/16-20 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 15PK X1E-FAS-NUT-LOC-1942x15
X1 Tools

7/16-20 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 15PK

Zoro # G322854012
Mfr # X1E-FAS-NUT-LOC-1942x15
product price:  $6.25
/pk 15, $0.42/ea
X1 Tools 1 1/2-12 Ultra H.P. Yellow Zinc Plated Grade 8 Steel Nylon-Insert Locknuts, 25PK X1E-FAS-NUT-LOC-1066x25
X1 Tools

1 1/2-12 Ultra H.P. Yellow Zinc Plated Grade 8 Steel Nylon-Insert Locknuts, 25PK

Zoro # G122850191
Mfr # X1E-FAS-NUT-LOC-1066x25
product price:  $1,720.99
/pk 25, $68.84/ea
X1 Tools 1/4-28 UHP Yellow Zinc Plated Grade 8 Steel Thin-Profile Nylon-Insert Locknuts, 50PK X1E-FAS-NUT-LOC-3012x50
X1 Tools

1/4-28 UHP Yellow Zinc Plated Grade 8 Steel Thin-Profile Nylon-Insert Locknuts, 50PK

Zoro # G422851898
Mfr # X1E-FAS-NUT-LOC-3012x50
product price:  $83.45
/pk 50, $1.67/ea
Zoro Select 6-32 Nylon Inst Flng Hx Lknut Zinc, 2000Pk 06NSFL
Zoro Select

6-32 Nylon Inst Flng Hx Lknut Zinc, 2000Pk

Zoro # G215623008
Mfr # 06NSFL
product price:  $230.99
/pk 2000, $0.12/ea
X1 Tools 3/4-10 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 250PK X1E-FAS-NUT-LOC-1956x250
X1 Tools

3/4-10 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 250PK

Zoro # G922859301
Mfr # X1E-FAS-NUT-LOC-1956x250
product price:  $441.99
/pk 250, $1.77/ea
Zoro Select Top Lock Distorted Thread Lock Nut, 1"-8, Steel, Grade 9, Zinc Plated, 1-1/16 in Ht, 5 PK SLI9100CAD-005P
Zoro Select

Top Lock Distorted Thread Lock Nut, 1"-8, Steel, Grade 9, Zinc Plated, 1-1/16 in Ht, 5 PK

Zoro # G2126196
Mfr # SLI9100CAD-005P
product price:  $70.89
/pk 5, $14.18/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 3/8-24 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 12PK X1E-FAS-NUT-LOC-1938x12
X1 Tools

3/8-24 Performance Zinc-Plated Steel Nylon-Insert Locknuts, 12PK

Zoro # G422858767
Mfr # X1E-FAS-NUT-LOC-1938x12
product price:  $3.85
/pk 12, $0.32/ea
X1 Tools 9/16-18 Performance Zinc-Plated Steel Thin-Profile Nylon-Insert Locknuts X1E-FAS-NUT-LOC-3448x1
X1 Tools

9/16-18 Performance Zinc-Plated Steel Thin-Profile Nylon-Insert Locknuts

Zoro # G222866559
Mfr # X1E-FAS-NUT-LOC-3448x1
product price:  $1.15
/ea
Lock Nuts (10,000+ items) - Page 55
  • First
  • Previous
  • 55
    of 277 pages
  • Next
  • Last
How was your search?

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 NutsCoupling NutsCap Nuts & Acorn NutsGeneral Washers
Hex Head Cap ScrewsSocket Head Cap ScrewsMachine ScrewsLock WashersSelf-Tapping Screws
lock nut 5/16-185/16-18 stainless steel boltflanged locknut3/8-16 nuts stainless steelnylon insert flange nut
serrated flange lock nut3/8" flange nutsdistorted thread lock nut1/4-20 stainless steel nutnylon-insert locknuts

Sign up and 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
  • Deals
  • Sitemap
  • Track My Order

Services

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

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