Glow-worm
Glow-Worm Tube Nut 4mm 45.004.388-001
4mm tube nut, manufacturer part 45.004.388-001, for Glow-worm Economy, Fuelsaver and Ultimate gas boilers.
At a glance
- Also known as 1333952
Showing prices
£11.93
£9.94 ex. VAT · VAT at 20%
Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
A 4mm tube nut supplied under Glow-worm part number 45.004.388-001. It is a small fastening component used on the gas-carrying and hydraulic pipework of older Glow-worm gas boilers. The nut secures the tube connection at the joint, so correct seating and tightening are essential to a sound, leak-free assembly.
Signs this part needs replacing
- Visible corrosion, pitting or thread damage on the nut
- Weeping or damp staining at the tube joint it secures
- The nut will not tighten down or binds on the thread
- Rounded or chewed flats from previous over-tightening
- Nut found loose or missing during a service or strip-down
Before you order
- Confirm the appliance model and, where applicable, the serial number against the fit list
- Check the existing nut size and thread to confirm 4mm is correct for the joint
- Inspect the mating olive and tube end, as these are commonly renewed at the same time
- Verify the manufacturer part number 45.004.388-001 on the appliance's parts list
Compliance
| GC number | 313-127 |
|---|---|
| Barcode / EAN | 5037985035838 |
| Alternative numbers | 1333952 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| GLOWWORM ECOMOMY 80FF - SERIAL NUMBER 3037 | — | — | — | |
| GLOWWORM ECONOMY 24 & ECONOMY 24BF PLUS | 41-313-90 | 41-313-90 | — | — |
| GLOWWORM ECONOMY 24FF | 41-313-90 | 41-313-90 | — | — |
| GLOWWORM ECONOMY 30 & ECONOMY 30BF PLUS | 41-319-01 | 41-319-01 | — | — |
| GLOWWORM ECONOMY 30F | 41-319-05 | 41-319-05 | — | — |
| GLOWWORM ECONOMY 40 & ECONOMY 40BF PLUS | 41-319-02 | 41-319-02 | — | — |
| GLOWWORM ECONOMY 40FF - SERIAL NUMBER 14451 | 41-319-06 | 41-319-06 | — | — |
| GLOWWORM ECONOMY 50 & ECONOMY 50BF PLUS | 41-319-03 | 41-319-03 | — | — |
| GLOWWORM ECONOMY 50FF - SERIAL NUMBER 14255 | 41-319-07 | 41-319-07 | — | — |
| GLOWWORM ECONOMY 60 & ECONOMY 60BF PLUS | 41-319-04 | 41-319-04 | — | — |
Showing 10 of 48 compatible appliances.
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
manual
GLOWWORM appliance manual — ECONOMY 30 & ECONOMY 30BF PLUS (GC 41-319-01)
manualmanualGLOWWORM appliance manual — ECONOMY 30F (GC 41-319-05)
manualmanualGLOWWORM appliance manual — ECONOMY 40 & ECONOMY 40BF PLUS (GC 41-319-02)
manualmanualGLOWWORM appliance manual — ECONOMY 50 & ECONOMY 50BF PLUS (GC 41-319-03)
manualmanualGLOWWORM appliance manual — FUELSAVER 30 R MKII & ECONOMY PLUS 30C (GC 41-313-77)
manualmanualGLOWWORM appliance manual — FUELSAVER 40 R MKII & ECONOMY PLUS 40C (GC 41-313-78)
manualmanualGLOWWORM appliance manual — FUELSAVER 50R MKII & ECONOMY PLUS 50 C (GC 41-313-79)
manualmanualGLOWWORM appliance manual — FUELSAVER COMPLHEAT 30 (GC 41-319-14)
manualmanualGLOWWORM appliance manual — FUELSAVER COMPLHEAT 40 (GC 41-319-20), FUELSAVER COMPLHEAT 55 (GC 41-319-19)
manualmanualGLOWWORM appliance manual — FUELSAVER COMPLHEAT 65 (GC 41-319-21), FUELSAVER COMPLHEAT 80 (GC 41-319-18)
manualmanualGLOWWORM appliance manual — FUELSAVER UFB 30B (GC 41-319-32), FUELSAVER UFB 40B (GC 41-319-33), FUELSAVER UFB 50B (GC 41-319-34)
manualmanualGLOWWORM appliance manual — FUELSAVER UFB 60B (GC 41-319-35), FUELSAVER UFB 75B (GC 41-319-36)
manualmanualGLOWWORM appliance manual — ULTIMATE 30BF (GC 41-319-51)
manualmanualGLOWWORM appliance manual — ULTIMATE 30FF (GC 41-319-56)
manualmanualGLOWWORM appliance manual — ULTIMATE 40BF (GC 41-319-52)
manualmanualGLOWWORM appliance manual — ULTIMATE 40FF (GC 41-319-57)
manualmanualGLOWWORM appliance manual — ULTIMATE 50BF (GC 41-319-53)
manualmanualGLOWWORM appliance manual — ULTIMATE 50FF (GC 41-319-58)
manualmanualGLOWWORM appliance manual — ULTIMATE 60BF (GC 41-319-54)
manualmanualGLOWWORM appliance manual — ULTIMATE 60FF (GC 41-319-59)
manualNo technical questions yet for this part.
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