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

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

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KMT18 115x125x32mm SKF Lock Nut

£150.25 - £150.25

£150.25

£150.25 - £150.25

£150.25

KMT18 115x125x32mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£150.25 - £150.25

£150.25

£150.25 - £150.25

£150.25

KMT17 110x120x32mm SKF Lock Nut

£138.36 - £138.36

£138.36

£138.36 - £138.36

£138.36

KMT17 110x120x32mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£138.36 - £138.36

£138.36

£138.36 - £138.36

£138.36

KMT16 100x110x32mm SKF Lock Nut

£114.72 - £114.72

£114.72

£114.72 - £114.72

£114.72

KMT16 100x110x32mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£114.72 - £114.72

£114.72

£114.72 - £114.72

£114.72

KMT15 97x105x28mm SKF Lock Nut

£103.67 - £103.67

£103.67

£103.67 - £103.67

£103.67

KMT15 97x105x28mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£103.67 - £103.67

£103.67

£103.67 - £103.67

£103.67

KMT14 92x100x28mm SKF Lock Nut

£101.21 - £101.21

£101.21

£101.21 - £101.21

£101.21

KMT14 92x100x28mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£101.21 - £101.21

£101.21

£101.21 - £101.21

£101.21

KMT12 82x90x26mm SKF Lock Nut

£83.24 - £83.24

£83.24

£83.24 - £83.24

£83.24

KMT12 82x90x26mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£83.24 - £83.24

£83.24

£83.24 - £83.24

£83.24

KMT11 78x85x25mm SKF Lock Nut

£79.14 - £79.14

£79.14

£79.14 - £79.14

£79.14

KMT11 78x85x25mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£79.14 - £79.14

£79.14

£79.14 - £79.14

£79.14

KMT10 68x75x25mm SKF Lock Nut

£68.69 - £68.69

£68.69

£68.69 - £68.69

£68.69

KMT10 68x75x25mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£68.69 - £68.69

£68.69

£68.69 - £68.69

£68.69

KMT1 25x30x14mm SKF Lock Nut

£62.98 - £62.98

£62.98

£62.98 - £62.98

£62.98

KMT1 25x30x14mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£62.98 - £62.98

£62.98

£62.98 - £62.98

£62.98

KMT0 23x28x14mm SKF Lock Nut

£57.78 - £57.78

£57.78

£57.78 - £57.78

£57.78

KMT0 23x28x14mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£57.78 - £57.78

£57.78

£57.78 - £57.78

£57.78

KML40 222x240x29mm SKF Lock Nut

£283.14 - £283.14

£283.14

£283.14 - £283.14

£283.14

KML40 222x240x29mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£283.14 - £283.14

£283.14

£283.14 - £283.14

£283.14

KML36 200x210x27mm SKF Lock Nut

£192.34 - £192.34

£192.34

£192.34 - £192.34

£192.34

KML36 200x210x27mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£192.34 - £192.34

£192.34

£192.34 - £192.34

£192.34

KML38 210x220x28mm SKF Lock Nut

£213.14 - £213.14

£213.14

£213.14 - £213.14

£213.14

KML38 210x220x28mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£213.14 - £213.14

£213.14

£213.14 - £213.14

£213.14

KML34 190x200x26mm SKF Lock Nut

£146.21 - £146.21

£146.21

£146.21 - £146.21

£146.21

KML34 190x200x26mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£146.21 - £146.21

£146.21

£146.21 - £146.21

£146.21

KML32 180x190x25mm SKF Lock Nut

£147.84 - £147.84

£147.84

£147.84 - £147.84

£147.84

KML32 180x190x25mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£147.84 - £147.84

£147.84

£147.84 - £147.84

£147.84

KML30 170x180x24mm SKF Lock Nut

£129.47 - £129.47

£129.47

£129.47 - £129.47

£129.47

KML30 170x180x24mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£129.47 - £129.47

£129.47

£129.47 - £129.47

£129.47

KML28 155x165x22mm SKF Lock Nut

£110.60 - £110.60

£110.60

£110.60 - £110.60

£110.60

KML28 155x165x22mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£110.60 - £110.60

£110.60

£110.60 - £110.60

£110.60

KML26 145x155x21mm SKF Lock Nut

£93.25 - £93.25

£93.25

£93.25 - £93.25

£93.25

KML26 145x155x21mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£93.25 - £93.25

£93.25

£93.25 - £93.25

£93.25

KML24 135x145x20mm SKF Lock Nut

£74.83 - £74.83

£74.83

£74.83 - £74.83

£74.83

KML24 135x145x20mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£74.83 - £74.83

£74.83

£74.83 - £74.83

£74.83

KMK9 60x65x11mm SKF Lock Nut

£40.29 - £40.29

£40.29

£40.29 - £40.29

£40.29

KMK9 60x65x11mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£40.29 - £40.29

£40.29

£40.29 - £40.29

£40.29

KMK8 53x58x11mm SKF Lock Nut

£37.56 - £37.56

£37.56

£37.56 - £37.56

£37.56

KMK8 53x58x11mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£37.56 - £37.56

£37.56

£37.56 - £37.56

£37.56

KMK7 48x52x9mm SKF Lock Nut

£35.22 - £35.22

£35.22

£35.22 - £35.22

£35.22

KMK7 48x52x9mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£35.22 - £35.22

£35.22

£35.22 - £35.22

£35.22

KMK6 41x45x9mm SKF Lock Nut

£32.78 - £32.78

£32.78

£32.78 - £32.78

£32.78

KMK6 41x45x9mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£32.78 - £32.78

£32.78

£32.78 - £32.78

£32.78

KMK5 34x38x9mm SKF Lock Nut

£30.21 - £30.21

£30.21

£30.21 - £30.21

£30.21

KMK5 34x38x9mm SKF Lock Nut Please Note: If selected brand is not available a suitable alternative will be supplied in Timken, NSK, FAG or NKE

£30.21 - £30.21

£30.21

£30.21 - £30.21

£30.21

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Lock Nuts – Secure Fastening Solutions Built to Last

What Makes Lock Nuts Different?

Lock Nut Types & Use Cases

Why Choose BEP’s Lock Nut Range?

Frequently Asked Questions (FAQs)

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

Q2. When should I choose a Nyloc nut?

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

Q4. Can security locknuts be reused?

Lock Nuts

Lock Nuts – Secure Fastening Solutions Built to Last

What Makes Lock Nuts Different?

Lock Nut Types & Use Cases

Why Choose BEP’s Lock Nut Range?

Frequently Asked Questions (FAQs)

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

Q2. When should I choose a Nyloc nut?

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

Q4. Can security locknuts be reused?