Baxi
Baxi M4 Hex Nut 635431
M4 full hex nut in nickel-plated mild steel, manufactured by Baxi for use across a range of Baxi gas boilers.
At a glance
- Also known as 1124238
Showing prices
£4.26
£3.55 ex. VAT · VAT at 20%
Available to order · 1 working day
Available to order · 1 working day
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
The Baxi M4 Hex Nut (part 635431) is a full hex nut in mild steel with a nickel-plated finish. It is used as a fixing on a broad range of Baxi gas boilers, including combi and system models. The M4 thread size makes it suitable for securing small brackets, covers and component mountings during service and repair work.
Signs this part needs replacing
- Visible corrosion or rusting on the nut body or thread
- Rounded or chewed hex flats from repeated removal
- Damaged or crossed threads that will not run freely onto the stud or bolt
- The nut is missing, dropped or lost during a service or repair
- The nut no longer holds torque and works loose under vibration
Before you order
- Confirm the thread size required is M4
- Check your appliance model and serial number against the fitment list above
- Check how many nuts are needed for the job, as this is a single fixing
- Inspect the mating stud or bolt for thread damage before fitting a new nut
Compliance
| GC number | 404-617 |
|---|---|
| Barcode / EAN | 5039177674399 |
| Alternative numbers | 1124238 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI COMBI 105HE | 47-075-18 | 47-075-18 | — | — |
| BAXI COMBI INSTANT 105HE | 47-075-19 | 47-075-19 | — | — |
| BAXI COMBI INSTANT 80E | 47-075-13 | 47-075-13 | — | — |
| BAXI COMBI INSTANT 80HE | 47-075-17 | 47-075-17 | — | — |
| BAXI DUO-TEC 24 COMBI ErP FROM SERIAL No. PSR16 - ENDING BC | 47-075-96 | 47-075-96 | — | — |
| BAXI DUO-TEC 24 COMBI ErP SERIAL No. ENDING AC | 47-075-96 | 47-075-96 | — | — |
| BAXI DUO-TEC 28 COMBI ErP FROM SERIAL No. PSS16 - ENDING BC | 47-075-97 | 47-075-97 | — | — |
| BAXI DUO-TEC 28 COMBI ErP SERIAL No. ENDING AC | 47-075-97 | 47-075-97 | — | — |
| BAXI DUO-TEC 28 LPG COMBI ErP FROM SERIAL No. PSW16 - ENDING BC | 47-075-98 | 47-075-98 | — | — |
| BAXI DUO-TEC 28 LPG COMBI ErP SERIAL No. ENDING AC | 47-075-98 | 47-075-98 | — | — |
Showing 10 of 287 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
BAXI appliance manual — COMBI 105HE (GC 47-075-18)
manualmanualBAXI appliance manual — COMBI INSTANT 105HE (GC 47-075-19), COMBI INSTANT 80HE (GC 47-075-17)
manualmanualBAXI appliance manual — COMBI INSTANT 80E (GC 47-075-13)
manualmanualBAXI appliance manual — DUO-TEC 24 COMBI ErP FROM SERIAL No. PSR16 - ENDING BC (GC 47-075-96), DUO-TEC 28 COMBI ErP FROM SERIAL No. PSS16 - ENDING BC (GC 47-075-97), DUO-TEC 28 LPG COMBI ErP FROM SERIAL No. PSW16 - ENDING BC (GC 47-075-98), DUO-TEC 33 COMBI ErP FROM SERIAL No. PSX16 - ENDING BC (GC 47-075-99), DUO-TEC 40 COMBI ErP FROM SERIAL No. PST16 - ENDING BC (GC 47-077-03)
manualmanualBAXI appliance manual — DUO-TEC 24 COMBI ErP SERIAL No. ENDING AC (GC 47-075-96), DUO-TEC 28 COMBI ErP SERIAL No. ENDING AC (GC 47-075-97), DUO-TEC 28 LPG COMBI ErP SERIAL No. ENDING AC (GC 47-075-98), DUO-TEC 33 COMBI ErP SERIAL No. ENDING AC (GC 47-075-99), DUO-TEC 40 COMBI ErP SERIAL No. ENDING AC (GC 47-077-03)
manualmanualBAXI appliance manual — DUO-TEC COMBI 24 HE A (AFTER SERIAL No. BTG 0815) (GC 47-075-35), DUO-TEC COMBI 24 HE A (BEFORE SERIAL No. BTG 0815) (GC 47-075-35), DUO-TEC COMBI 28 HE A (AFTER SERIAL No. CAC 0929) (GC 47-075-36), DUO-TEC COMBI 28 HE A (BEFORE SERIAL No. CAC 0929) (GC 47-075-36), DUO-TEC COMBI 33 HE A (AFTER SERIAL No. BTH 1112) (GC 47-075-37), DUO-TEC COMBI 33 HE A (BEFORE SERIAL No. BTH 1112) (GC 47-075-37)
manualmanualBAXI appliance manual — DUO-TEC COMBI 40 HE A (GC 47-075-38)
manualmanualBAXI appliance manual — MEGAFLO SYSTEM ErP 15 SERIAL No. ENDING BC (GC 41-470-18), MEGAFLO SYSTEM ErP 15 SERIAL No. ENDING CC (GC 41-470-18), MEGAFLO SYSTEM ErP 18 SERIAL No. ENDING BC (GC 41-470-19), MEGAFLO SYSTEM ErP 18 SERIAL No. ENDING CC (GC 41-470-19), MEGAFLO SYSTEM ErP 24 SERIAL No. ENDING BC (GC 41-470-20), MEGAFLO SYSTEM ErP 24 SERIAL No. ENDING CC (GC 41-470-20), MEGAFLO SYSTEM ErP 28 SERIAL No. ENDING BC (GC 41-470-21), MEGAFLO SYSTEM ErP 28 SERIAL No. ENDING CC (GC 41-470-21), MEGAFLO SYSTEM ErP 32 SERIAL No. ENDING BC (GC 41-470-22), MEGAFLO SYSTEM ErP 32 SERIAL No. ENDING CC (GC 41-470-22)
manualmanualBAXI appliance manual — PLATINUM + 40 COMBI (GC 47-077-41)
manualmanualBAXI appliance manual — PLATINUM 24 COMBI ErP SERIAL No. ENDING AC (GC 47-077-04), PLATINUM 24 COMBI ErP SERIAL No. ENDING BC (GC 47-077-04), PLATINUM 24 COMBI ErP SERIAL No. ENDING CC (GC 47-077-04), PLATINUM 24 COMBI ErP SERIAL No. ENDING DC (GC 47-077-04), PLATINUM 24 COMBI ErP SERIAL No. ENDING EC (GC 47-077-04), PLATINUM 28 COMBI ErP SERIAL No. ENDING AC (GC 47-077-05), PLATINUM 28 COMBI ErP SERIAL No. ENDING BC (GC 47-077-05), PLATINUM 28 COMBI ErP SERIAL No. ENDING CC (GC 47-077-05), PLATINUM 28 COMBI ErP SERIAL No. ENDING DC (GC 47-077-05), PLATINUM 28 COMBI ErP SERIAL No. ENDING EC (GC 47-077-05), PLATINUM 33 COMBI ErP SERIAL No. ENDING AC (GC 47-077-06), PLATINUM 33 COMBI ErP SERIAL No. ENDING BC (GC 47-077-06), PLATINUM 33 COMBI ErP SERIAL No. ENDING CC (GC 47-077-06), PLATINUM 33 COMBI ErP SERIAL No. ENDING DC (GC 47-077-06), PLATINUM 33 COMBI ErP SERIAL No. ENDING EC (GC 47-077-06), PLATINUM 40 COMBI ErP SERIAL No. ENDING AC (GC 47-077-07), PLATINUM 40 COMBI ErP SERIAL No. ENDING BC (GC 47-077-07), PLATINUM 40 COMBI ErP SERIAL No. ENDING CC (GC 47-077-07), PLATINUM 40 COMBI ErP SERIAL No. ENDING DC (GC 47-077-07), PLATINUM 40 COMBI ErP SERIAL No. ENDING EC (GC 47-077-07)
manualmanualBAXI appliance manual — PLATINUM COMBI 24 HE A - AFTER SERIAL No. BMY 0815 (GC 47-075-31), PLATINUM COMBI 28 HE A - AFTER SERIAL No. BNC 0932 (GC 47-075-32), PLATINUM COMBI 33 HE A - AFTER SERIAL No. BNE1112 (GC 47-075-33)
manualmanualBAXI appliance manual — PLATINUM COMBI 24 HE A - BEFORE SERIAL No. BMY 0815 (GC 47-075-31), PLATINUM COMBI 28 HE A - BEFORE SERIAL No. BNC 0932 (GC 47-075-32), PLATINUM COMBI 33 HE A - BEFORE SERIAL No. BNE1112 (GC 47-075-33)
manualmanualBAXI appliance manual — SYSTEM IE 24 HE MEGAFLO LPG (GC 51-297-58), SYSTEM IE 28 HE MEGAFLO LPG (GC 51-297-59)
manualmanualPOTTERTON appliance manual — APOLLO 25 (GC 47-393-38), APOLLO 30 (GC 47-393-37)
manualmanualPOTTERTON appliance manual — FLAMINGO 2 CF 20/30 (GC 41-605-16)
manualmanualPOTTERTON appliance manual — FLAMINGO CF 20/30 (GC 41-601-33)
manualmanualPOTTERTON appliance manual — FLAMINGO RS 20/30 (GC 41-601-23)
manualmanualPOTTERTON appliance manual — GOLD COMBI ErP 24 - SERIAL No. ENDING AC (GC 47-393-43), GOLD COMBI ErP 24 - SERIAL No. ENDING BC (GC 47-393-43), GOLD COMBI ErP 24 - SERIAL No. ENDING DC (GC 47-393-43), GOLD COMBI ErP 24 - SERIAL No. ENDING EC (GC 47-393-43), GOLD COMBI ErP 28 - SERIAL No. ENDING AC (GC 47-393-44), GOLD COMBI ErP 28 - SERIAL No. ENDING BC (GC 47-393-44), GOLD COMBI ErP 28 - SERIAL No. ENDING DC (GC 47-393-44), GOLD COMBI ErP 28 - SERIAL No. ENDING EC (GC 47-393-44), GOLD COMBI ErP 28 LPG - SERIAL No. ENDING AC (GC 47-393-45), GOLD COMBI ErP 28 LPG - SERIAL No. ENDING BC (GC 47-393-45), GOLD COMBI ErP 28 LPG - SERIAL No. ENDING DC (GC 47-393-45), GOLD COMBI ErP 28 LPG - SERIAL No. ENDING EC (GC 47-393-45), GOLD COMBI ErP 33 - SERIAL No. ENDING AC (GC 47-393-46), GOLD COMBI ErP 33 - SERIAL No. ENDING BC (GC 47-393-46), GOLD COMBI ErP 33 - SERIAL No. ENDING DC (GC 47-393-46), GOLD COMBI ErP 33 - SERIAL No. ENDING EC (GC 47-393-46)
manualmanualPOTTERTON appliance manual — GOLD COMBI HE A 24 - AFTER SERIAL No. BMX 0815 AND AFTER GNH 0815 (GC 47-393-18), GOLD COMBI HE A 28 - AFTER SERIAL No. BNF 0932 AND AFTER GNK 0932 (GC 47-393-19), GOLD COMBI HE A 28 LPG (GC 47-393-30), GOLD COMBI HE A 33 - AFTER SERIAL No. GNL1112 (GC 47-393-20)
manualmanualPOTTERTON appliance manual — GOLD COMBI HE A 24 - BEFORE SERIAL No. BMX 0815 AND GNH 0815 (GC 47-393-18), GOLD COMBI HE A 28 - BEFORE SERIAL No. BNF 0932 AND GNK 0932 (GC 47-393-19), GOLD COMBI HE A 33 - BEFORE SERIAL No. GNL 1112 (GC 47-393-20)
manualmanualPOTTERTON appliance manual — GOLD SYSTEM ErP 18 SERIAL No. ENDING AC (GC 41-592-39), GOLD SYSTEM ErP 18 SERIAL No. ENDING BC & CC (GC 41-592-39), GOLD SYSTEM ErP 18 SERIAL No. ENDING DC (GC 41-592-39), GOLD SYSTEM ErP 24 SERIAL No. ENDING AC (GC 41-592-40), GOLD SYSTEM ErP 24 SERIAL No. ENDING BC & CC (GC 41-592-40), GOLD SYSTEM ErP 24 SERIAL No. ENDING DC (GC 41-592-40), GOLD SYSTEM ErP 28 SERIAL No. ENDING AC (GC 41-592-41), GOLD SYSTEM ErP 28 SERIAL No. ENDING BC & CC (GC 41-592-41), GOLD SYSTEM ErP 28 SERIAL No. ENDING DC (GC 41-592-41)
manualmanualPOTTERTON appliance manual — HEATMAX COMBI 24 HE (GC 47-393-27), HEATMAX COMBI 28 HE (GC 47-393-28), HEATMAX COMBI 33 HE - AFTER SERIAL No. FMN 1112 (GC 47-393-29), HEATMAX COMBI 33 HE - BEFORE SERIAL No. FMN 1112 (GC 47-393-29)
manualmanualPOTTERTON appliance manual — KINGFISHER 2 CF 40 (GC 41-607-07), KINGFISHER 2 CF 40 TTB (GC 41-607-34), KINGFISHER 2 CF 50 (GC 41-607-08), KINGFISHER 2 CF 60 (GC 41-607-09)
manualmanualPOTTERTON appliance manual — KINGFISHER CF 40 (GC 41-601-57), KINGFISHER CF 50 (GC 41-601-58), KINGFISHER CF 60 (GC 41-601-56)
manualmanualPOTTERTON appliance manual — LYNX ELECTRONIC RS (GC 47-592-20)
manualmanualPOTTERTON appliance manual — NETAHEAT 10/16 ELECTRONIC - SERIAL No 1000 UPWARDS (GC 41-601-67), NETAHEAT 16/22 ELECTRONIC (GC 41-601-66), NETAHEAT 6/10 ELECTRONIC (GC 41-601-68)
manualmanualPOTTERTON appliance manual — NETAHEAT 10/16 MK1 (GC 41-601-03), NETAHEAT 16/22 MK1 (GC 41-601-04)
manualmanualPOTTERTON appliance manual — NETAHEAT 10/16 MK2F (GC 41-601-34), NETAHEAT 16/22 MK2F (GC 41-601-35)
manualmanualPOTTERTON appliance manual — NETAHEAT PROFILE 30E (GC 41-601-35), NETAHEAT PROFILE 40E (GC 41-605-04), NETAHEAT PROFILE 50E (GC 41-605-41), NETAHEAT PROFILE 50E - LPG, NETAHEAT PROFILE 60E (GC 41-605-42), NETAHEAT PROFILE 60E - LPG, NETAHEAT PROFILE 80E (GC 41-605-43), NETAHEAT PROFILE 80E - LPG
manualmanualPOTTERTON appliance manual — PERFORMA SYSTEM 12HE (GC 41-591-24), PERFORMA SYSTEM 18HE (GC 41-591-25), PERFORMA SYSTEM 24HE (GC 41-591-26), PERFORMA SYSTEM 28HE (GC 41-591-27)
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