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Business Services
| Quantity |
Unit Price
(ex. VAT)
|
Unit Price
(inc. VAT)
|
|---|---|---|
| 1 - 99 | £0.36 | £0.43 |
| 100 - 499 | £0.31 | £0.37 |
| 500 - 999 | £0.24 | £0.29 |
| 1000 + | £0.20 | £0.24 |
Product Stock
| Product Specifications | LN985-M20-C8-BZP |
|---|---|
| Thread Size | M20 |
| Thread Pitch | 2.50mm |
| Material | Class 8 Steel BZP |
| Across Flats | 30mm |
| Height | 20mm |
| Standard | DIN 985 |
Same Day Dispatch Available
Order by 4pm (UK) for same day dispatch (Monday – Thursday, 2pm Friday). Next Day or Standard Delivery available via DHL or Royal Mail.
Frequently Bought Together
- Thread Size M20
- Material 8.8 Steel BZP
- Length 30mm
- Across Flats 30mm
- Standard DIN 933
- Pitch 2.5mm
- Head Height 12.9mm
- Head Style Hex Head
- Thread Size M20
- Material Class 8 BZP
- Height 16.0mm
- Thread Pitch 2.5mm
- Across Flats 30.0mm
- Standard DIN 934
- Thread Size 18.0mm
- Material Chrome Plated Die Cast Zinc
- Thread Length 17mm
- Head Diameter 24.0mm
- Across Flats 24mm
- Hole Size 19.5mm
- Key Type Standard Key (Included)
- Cam Length 45mm
- Cam Depth 24.0mm
Total Price: £0.00
Product Description
M20 x 2.50mm Nylon Insert Lock Hex Nut, 30mm AF, 20mm Height, DIN 985, Class 8 Steel BZP | Vital Parts – LN985-M20-C8-BZP
Protect threaded joints from loosening using our Nylon Insert Lock Hex Nut, a self-locking fastener designed to resist vibration and prevent backing-off in service. Manufactured to DIN 985 from Class 8 Steel BZP, this nut is sized for M20 threads with a 2.50mm pitch and installs consistently with 30mm across flats and a 20mm overall height. (M20 Nylon Lock Hex Nut DIN 985 - Class 8 Steel BZP)
What Are Nylon Insert Lock Hex Nuts (DIN 985)?
Nylon insert lock hex nuts are prevailing-torque fasteners that include a nylon collar within the top of the nut. As the nut is tightened, the nylon insert deforms around the bolt thread, increasing friction and helping resist loosening caused by vibration, shock or cyclic loading. Manufactured to DIN 985, these nuts provide consistent dimensions for dependable, repeatable assembly.
Applications and Key Industries
These DIN 985 nylon lock nuts are widely used across the UK in sectors that require vibration-resistant fastening. Common use cases include:
- Manufacturing and Engineering: Securing brackets, covers and assemblies where movement can loosen standard nuts.
- Automotive and Plant Maintenance: Retaining components exposed to vibration, thermal cycling and routine servicing.
- Construction and Fabrication: Locking fasteners on equipment, frames and fabricated joints for dependable retention.
Purchasers typically include procurement managers, maintenance engineers, fitters and workshop supervisors who need consistent dimensions, reliable locking performance and dependable supply.
Why Choose These Nylon Lock Hex Nuts?
This M20 nylon lock nut is a reliable choice when you need vibration resistance without additional locking hardware. With 30mm across flats and a 20mm overall height, it supports consistent installation using standard spanners and sockets. The Class 8 Steel BZP finish is suited to indoor and sheltered environments where practical corrosion resistance and clear identification are required.
Key Features
- Self-locking nylon insert: Adds prevailing torque to help resist loosening under vibration.
- DIN 985 standard: Consistent dimensions for predictable assembly and tooling.
- Hex for standard tools: 30mm across flats for common spanners and sockets.
Technical Specifications
- Thread Size: M20
- Thread Pitch: 2.50mm
- Across Flats: 30mm
- Height: 20mm
- Standard: DIN 985
- Material: Class 8 Steel BZP
Benefits
- Helps resist loosening under vibration and cyclic loading
- Reduces the need for additional locking washers or threadlock
- Supports repeatable assembly with consistent dimensions
- Nylon insert provides controlled locking without damaging threads in typical use
Call Vital Parts Today
For expert advice, free product samples and same-day dispatch, call our England based customer support team on 01233 713 581. Register for your Vital Parts Business Account to unlock credit payment terms, preferential delivery options, exclusive trade pricing and a dedicated account manager.
Related Products
| Code | Thread Size | Material | Height | Thread Pitch | Across Flats | Standard | Stock | |
|---|---|---|---|---|---|---|---|---|
| LN985-M10-C10-BZP | M10 | Class 10 Steel BZP | 10mm | 1.50mm | 17mm | DIN 985 |
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| LN985-M10-C8-BZP | M10 | Class 8 Steel BZP | 10mm | 1.50mm | 17mm | DIN 985 |
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| LN985-M12-C10-BZP | M12 | Class 10 Steel BZP | 12mm | 1.75mm | 19mm | DIN 985 |
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| LN985-M12-C8-BZP | M12 | Class 8 Steel BZP | 12mm | 1.75mm | 19mm | DIN 985 |
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| LN985-M14-C10-BZP | M14 | Class 10 Steel BZP | 14mm | 2.00mm | 22mm | DIN 985 |
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| LN985-M14-C8-BZP | M14 | Class 8 Steel BZP | 14mm | 2.00mm | 22mm | DIN 985 |
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| LN985-M16-C10-BZP | M16 | Class 10 Steel BZP | 16mm | 2.00mm | 24mm | DIN 985 |
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| LN985-M16-C8-BZP | M16 | Class 8 Steel BZP | 16mm | 2.00mm | 24mm | DIN 985 |
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| LN985-M18-C10-BZP | M18 | Class 10 Steel BZP | 18mm | 2.50mm | 27mm | DIN 985 |
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| LN985-M20-C8-BZP | M20 | Class 8 Steel BZP | 20mm | 2.50mm | 30mm | DIN 985 |
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| LN985-M8-C10-BZP | M8 | Class 10 Steel BZP | 8mm | 1.25mm | 13mm | DIN 985 |
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