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Lock Nuts – Secure Fastening Solutions Built to Last

Here at BEP Ltd, we offer a selection of lock nuts that achieve this goal as well, eradicating the risks of vibration vibrations which can cause problems to equipment driven by torques and external fiords. For automotive, industrial or structural application lock nuts, our range that includes nyloc nuts and all-metal NutLocks provides the strength engineers expect.

What Makes Lock Nuts Different?

Locking nuts, also referred to as locknuts, prevailing torque nuts or self-locking nuts, are designed to remain securely fastened under conditions that would cause a normal nut to loosen.

They usually operate by requiring prevailing torque during installation that generally comes in the form of deformed threads, inserts or serrated surfaces which bite into the mating bolt.

Lock Nut Types & Use Cases

Type

How It Locks

Best For

Nylon-insert (Nyloc)

Nylon ring creates friction with threads

General use; up to ~250°F

Distorted-thread

Deformed threads press against bolt threads

High-temperature, reusable

Serrated Flange

Angled ridges bite into surface

Prevents rotation; no washer needed

Security Locknut

Steel ring applies clamping friction and load isolation

Heavy vibration and rail applications

Split-beam / Stover

Slotted top sections expand to grip threads

High-temp, reusable up to ~1400°F


Why Choose BEP’s Lock Nut Range?

  • Expertly Selected Inventory – We stock high-quality prevailing torque, Nyloc, all-metal, and security lock nuts.
  • Trusted in High-Stress Environments – Ideal for automotive, aerospace, oil & gas, and heavy machinery applications (where failure isn’t an option) 
  • UK-Based Distribution – Fast dispatch, excellent customer service, and available for bulk or OEM orders.
  • Companion Support – Not sure which lock nut you need? Our technical team is ready to guide you through material, size, and environment matchups.

Frequently Asked Questions (FAQs)

Q1. What is a lock nut, and how is it different from a regular nut?

A lock nut resists loosening under vibration, using features like elastic deformation or surface interference, unlike standard nuts that rely on external aids like thread-lock fluid 

Q2. When should I choose a Nyloc nut?

Use for general applications, especially involving moderate vibration and temperatures up to ~250°F. Not recommended for extreme heat or repeated re-use 

Q3. What are all-metal lock nuts used for?

They're ideal for high-temperature, harsh environments where reusable and low-failure lock nuts are needed—from automotive to industrial across wide temperature ranges 

Q4. Can security locknuts be reused?

Yes. Their resilient steel lock ring design ensures consistent locking torque over repeated cycles—perfect for systems where disassembly and reassembly are routine 

Lock Nuts

Lock Nuts – Secure Fastening Solutions Built to Last

Here at BEP Ltd, we offer a selection of lock nuts that achieve this goal as well, eradicating the risks of vibration vibrations which can cause problems to equipment driven by torques and external fiords. For automotive, industrial or structural application lock nuts, our range that includes nyloc nuts and all-metal NutLocks provides the strength engineers expect.

What Makes Lock Nuts Different?

Locking nuts, also referred to as locknuts, prevailing torque nuts or self-locking nuts, are designed to remain securely fastened under conditions that would cause a normal nut to loosen.

They usually operate by requiring prevailing torque during installation that generally comes in the form of deformed threads, inserts or serrated surfaces which bite into the mating bolt.

Lock Nut Types & Use Cases

Type

How It Locks

Best For

Nylon-insert (Nyloc)

Nylon ring creates friction with threads

General use; up to ~250°F

Distorted-thread

Deformed threads press against bolt threads

High-temperature, reusable

Serrated Flange

Angled ridges bite into surface

Prevents rotation; no washer needed

Security Locknut

Steel ring applies clamping friction and load isolation

Heavy vibration and rail applications

Split-beam / Stover

Slotted top sections expand to grip threads

High-temp, reusable up to ~1400°F


Why Choose BEP’s Lock Nut Range?

  • Expertly Selected Inventory – We stock high-quality prevailing torque, Nyloc, all-metal, and security lock nuts.
  • Trusted in High-Stress Environments – Ideal for automotive, aerospace, oil & gas, and heavy machinery applications (where failure isn’t an option) 
  • UK-Based Distribution – Fast dispatch, excellent customer service, and available for bulk or OEM orders.
  • Companion Support – Not sure which lock nut you need? Our technical team is ready to guide you through material, size, and environment matchups.

Frequently Asked Questions (FAQs)

Q1. What is a lock nut, and how is it different from a regular nut?

A lock nut resists loosening under vibration, using features like elastic deformation or surface interference, unlike standard nuts that rely on external aids like thread-lock fluid 

Q2. When should I choose a Nyloc nut?

Use for general applications, especially involving moderate vibration and temperatures up to ~250°F. Not recommended for extreme heat or repeated re-use 

Q3. What are all-metal lock nuts used for?

They're ideal for high-temperature, harsh environments where reusable and low-failure lock nuts are needed—from automotive to industrial across wide temperature ranges 

Q4. Can security locknuts be reused?

Yes. Their resilient steel lock ring design ensures consistent locking torque over repeated cycles—perfect for systems where disassembly and reassembly are routine 

HM3176 440x490x60mm SKF Lock Nut

£2,320.34 - £2,320.34
£2,320.34
£2,320.34 - £2,320.34
£2,320.34

HM3176 440x490x60mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£2,320.34 - £2,320.34
£2,320.34
£2,320.34 - £2,320.34
£2,320.34

HM3168 400x440x55mm SKF Lock Nut

£1,308.54 - £1,308.54
£1,308.54
£1,308.54 - £1,308.54
£1,308.54

HM3168 400x440x55mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£1,308.54 - £1,308.54
£1,308.54
£1,308.54 - £1,308.54
£1,308.54

HM3164 360x400x42mm SKF Lock Nut

£1,012.50 - £1,012.50
£1,012.50
£1,012.50 - £1,012.50
£1,012.50

HM3164 360x400x42mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£1,012.50 - £1,012.50
£1,012.50
£1,012.50 - £1,012.50
£1,012.50

HM3160 340x380x40mm SKF Lock Nut

£671.27 - £671.27
£671.27
£671.27 - £671.27
£671.27

HM3160 340x380x40mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£671.27 - £671.27
£671.27
£671.27 - £671.27
£671.27

HM3092 510x540x60mm SKF Lock Nut

£1,880.38 - £1,880.38
£1,880.38
£1,880.38 - £1,880.38
£1,880.38

HM3092 510x540x60mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£1,880.38 - £1,880.38
£1,880.38
£1,880.38 - £1,880.38
£1,880.38

HM3084 462x490x52mm SKF Lock Nut

£1,452.60 - £1,452.60
£1,452.60
£1,452.60 - £1,452.60
£1,452.60

HM3084 462x490x52mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£1,452.60 - £1,452.60
£1,452.60
£1,452.60 - £1,452.60
£1,452.60

HM3088 490x520x60mm SKF Lock Nut

£1,812.15 - £1,812.15
£1,812.15
£1,812.15 - £1,812.15
£1,812.15

HM3088 490x520x60mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£1,812.15 - £1,812.15
£1,812.15
£1,812.15 - £1,812.15
£1,812.15

HM3080 442x470x52mm SKF Lock Nut

£1,518.62 - £1,518.62
£1,518.62
£1,518.62 - £1,518.62
£1,518.62

HM3080 442x470x52mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£1,518.62 - £1,518.62
£1,518.62
£1,518.62 - £1,518.62
£1,518.62

HM3068 376x400x45mm SKF Lock Nut

£799.16 - £799.16
£799.16
£799.16 - £799.16
£799.16

HM3068 376x400x45mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£799.16 - £799.16
£799.16
£799.16 - £799.16
£799.16

HM3076 422x450x48mm SKF Lock Nut

£1,130.71 - £1,130.71
£1,130.71
£1,130.71 - £1,130.71
£1,130.71

HM3076 422x450x48mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£1,130.71 - £1,130.71
£1,130.71
£1,130.71 - £1,130.71
£1,130.71

HM3072 394x420x45mm SKF Lock Nut

£991.25 - £991.25
£991.25
£991.25 - £991.25
£991.25

HM3072 394x420x45mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£991.25 - £991.25
£991.25
£991.25 - £991.25
£991.25

HM3056 310x330x38mm SKF Lock Nut

£462.20 - £462.20
£462.20
£462.20 - £462.20
£462.20

HM3056 310x330x38mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£462.20 - £462.20
£462.20
£462.20 - £462.20
£462.20

HM3064 356x380x42mm SKF Lock Nut

£690.17 - £690.17
£690.17
£690.17 - £690.17
£690.17

HM3064 356x380x42mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£690.17 - £690.17
£690.17
£690.17 - £690.17
£690.17

HM3060 336x360x42mm SKF Lock Nut

£541.66 - £541.66
£541.66
£541.66 - £541.66
£541.66

HM3060 336x360x42mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£541.66 - £541.66
£541.66
£541.66 - £541.66
£541.66

HM3044 242x260x30mm SKF Lock Nut

£298.36 - £298.36
£298.36
£298.36 - £298.36
£298.36

HM3044 242x260x30mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£298.36 - £298.36
£298.36
£298.36 - £298.36
£298.36

HM3052 290x310x34mm SKF Lock Nut

£387.34 - £387.34
£387.34
£387.34 - £387.34
£387.34

HM3052 290x310x34mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£387.34 - £387.34
£387.34
£387.34 - £387.34
£387.34

HM3048 270x290x34mm SKF Lock Nut

£374.22 - £374.22
£374.22
£374.22 - £374.22
£374.22

HM3048 270x290x34mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£374.22 - £374.22
£374.22
£374.22 - £374.22
£374.22

KMK1 18x22x9mm SKF Lock Nut

£32.19 - £32.19
£32.19
£32.19 - £32.19
£32.19

KMK1 18x22x9mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£32.19 - £32.19
£32.19
£32.19 - £32.19
£32.19

Hi. Need any help?