
Flexicon FLK21-M20B Flexilok Type FLK Black Fast Fit Nylon Straight Fixed External Thread Connector For Non-Metallic Flexible Conduit IP66 M20 21mm
FLK21-M20B
Range Options
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FLK20-M20-90B | 20mm, 90? Elbow, Black | £3.13 £2.61 |
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FLK20-M20B | 20mm, Straight Fixed, Black | £2.20 £1.83 |
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FLK21-M20-90B | 21mm, 90? Elbow, Black | £3.91 £3.26 |
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FLK21-M20B | 21mm, Straight Fixed, Black | £2.15 £1.79 |
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FLK25-M25-90B | 25mm, 90? Elbow, Black | £4.34 £3.62 |
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FLK28-M25-90B | 28mm, 90? Elbow, Black | £5.11 £4.26 |
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FLK28-M25B | 28mm, Straight Fixed, Black | £2.69 £2.24 |
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Flexicon FLK21-M20B Flexilok Straight Nylon Connector – Fast-Fit IP66 External Thread for 21mm Non-Metallic Conduit
The Flexicon FLK21-M20B is a fast-fit, one-piece straight connector designed for 21mm non-metallic flexible conduit. Built from robust nylon and featuring a slim design with IP66 ingress protection, it’s ideal for efficient and secure conduit termination in commercial and industrial applications.
- Quick-Fit One-Piece Design: Streamlined straight connector enables rapid installation without additional fittings.
- IP66 Rated Protection: Guards against dust and powerful water jets, ensuring long-term reliability in tough environments.
- Anti-Vibration & Tamper Resistant: Secure fitting ideal for applications subject to movement or requiring a tamper-proof connection.
- Tool-Removable: Easily removed or adjusted using a standard screwdriver.
- Compatible with Multiple Conduits: Suitable for fine and coarse pitch nylon flexible conduits.
Technical Specification
- Type: Straight Fixed External Thread Connector
- Material: Nylon (PA66), halogen, sulphur & phosphorus free
- Conduit Size: 21mm
- Thread Size: M20 (supplied with locknut)
- IP Rating: IP66
✅ Choose the Flexicon FLK21-M20B for fast, secure, and weather-resistant straight conduit terminations.

Ean Code | 5052446005281 |
Range | Atkore Flexilok |
Thread | Male |
Product | Flexible Conduit Connectors |
Type | Fixed |
Ingress Protection | IP66 |
Colour | Black |
Diameter | 21 mm |
Material | Nylon |
Standards | ROHS |
Qualifier | Flexible |
Ce Approved | Y |
Nominal Width | 20 mm |
Normal Operating Minimum Temperature | -40 Degrees C |
Normal Operating Maximum Temperature | 120 Degrees C |
Delivery Options:
- PRIORITY DELIVERY – Next Working Day (All items in stock and ordered before 3 pm) - £7.08 inc-VAT. (£5.90 ex-VAT)
- Orders Over £100 (before VAT): We offer free standard shipping on all orders shipped to UK mainland addresses
- Orders under £100 (before VAT): Our standard delivery fee to UK mainland addresses is £5.90 ex-VAT (£7.08 inc-VAT)
*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12 ex-VAT for all orders (Prices subject to change).
Items requiring specialist shipping:
- Orders containing Solar Panels, Batteries and/or Inverters: Up to 50 qty will be dispatched on a pallet and incur a £120 ex-VAT delivery charge**.
**Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £180 ex-VAT (Prices subject to change).
Contact us if you have any further questions.