MALE TO TUBE STRAIGHT 1/8″, 1/4″ and M5 Male to 4mm Tube

R56,17

Comparison Overview

Thread Size	Tube OD	Body Material	Seal Type	Temp Range	Pressure Range	Notes
1/8″ BSP	4 mm	Brass / plastic	NBR / Viton variants	–20 °C to 80 °C	up to 20 bar (~300 psi)	South African PU05xx series, R20–R30
1/4″ BSP	4 mm	Brass / plastic	Similar	Similar	Similar	Same series, slightly more expensive
M5 × 0.8 (PC04‑M5)	4 mm	Nickel‑plated brass	NBR O‑ring	0–60 °C	0–1.0 MPa (150 psi)	One‑touch release fitting
M5 × 0.8 (PC04‑M5L)	4 mm	316L stainless steel	Viton (FKM) O‑ring	–20 °C to 150 °C	up to 2.0 MPa (290 psi)	Corrosion‑resistant, higher‑temp use
M5 × 0.8 (Aignep)	4 mm	Chrome‑plated brass / resin	NBR + stainless claw	–20‑C to 80 °C	up to ~20 bar	High‑durability, many reconnections possible
M5 × 0.8 (Festo)	4 mm	Nickel‑plated brass	NBR	–10 °C to 80 °C	up to 14 bar	Compact profile, for pneumatic applications

✅ Use Recommendations

For 1/8″ or 1/4″ thread needs with 4 mm tubing, PU04 variants from Factorysupplies offer simple, low‑cost options and are typical in hobbyist/compressed air setups.
For M5 thread, choose based on requirements:
- Standard brass (PC04‑M5) is cost‑effective and easy to find.
- Stainless‑steel (PC04‑M5L) if you need higher temperature / corrosive resistance.
- Aignep etc. if you plan many reconnections and need durable grip.
- Festo QSM‑M5‑4 if space is tight and your system handles up to ~14 bar.

ℹ️ Additional Info from User Discussions

Many users in 3D‑printing / pneumatic forums refer to these as “PC4‑M5” fittings—used for 4 mm PTFE tubes with M5 metric ports. Some people interchange “PC4” with PC04 naming
When used in 3D printer bowden setups, some note that the threads are actually 1/8″ BSP, but commonly marked as PC4‑M6 or M5 based on tubing and hotend thread mismatch
Festo fittings are often recommended by users seeking better longevity versus generic cheap parts Reddit+1Reddit+1.

🧰 Summary

1/8″ male to 4 mm tube: PU 05xx series, brass/push‑in, around R20–30.
1/4″ male to 4 mm tube: same series with 1/4″ thread variant.
M5 male to 4 mm tube: PC04‑M5 style; choose brass or stainless based on environment and pressure/temp needs. Festo and Aignep versions add added durability and narrower profiles.

Let me know if you’d like help finding suppliers, model numbers, or purchasing options—particularly in South Africa—or if you need compatible tubing or female-threaded counterparts!

SKU: PC04- Category: Punic Couplings

Description

1) Push‑in fitting: 4 mm tube → 1/8″ Male Thread

Factorysupplies Online (South Africa):

Body: nickel‑plated brass (tube side plastic)
Tube OD: 4 mm
Male thread: 1/8″ BSP (likely BSPT/BSPP)
Seals: NBR / EPDM / Viton
Pressure rating: up to ~300 psi (≈ 20 bar)
Temperature range: –20 °C to +80 °C
Flow rate: up to ~2.8 m³/min
Push‑in connector, reusable, tool‑free installation

2) Push‑in fitting: 4 mm tube → 1/4″ Male Thread

Also from the same Factorysupplies listing:

Identical construction/materials as above
Male thread: 1/4″ BSP
Price: slightly higher (e.g. ~R23.50 for PU0511)

Features remain: push‑in, straight inline, push‑to‑connect tubing to female threaded port.

3) Push‑in fitting: 4 mm tube → M5 Male Thread × 0.8 mm pitch

Several manufacturers list this as a PC04‑M5 style fitting:

Pneuflex (PC 04‑M5):

Tube OD: 4 mm, thread: M5 × 0.8
Body & thread: nickel‑plated brass
Seal: NBR O‑ring
Lock claws: stainless steel
Temperature range: 0 – 60 °C (32–140 °F)
Working pressure: 0–1.0 MPa (0–150 psi); proof pressure ~3.0 MPa (435 psi)
Handles air, vacuum, water (non‑freezing)
One‑touch tubing release ring for quick disconnect

PC04‑M5L stainless‑steel version (316L, Pneuflex/others):

Material: 316L stainless‑steel body, collet; Viton O‑ring
Fluid: air, vacuum, water (non‑freezing), steam
Pressure: up to ~2.0 MPa (290 psi), proof pressure ~3.0 MPa (435 psi)
Temp range: –20 °C to +150 °C (–4 °F to 302 °F)

Aignep Series 50000 / 55000:

Material: chrome‑plated brass plus acetal resin ring for release
Thread: M5; Tube OD: 4 mm
Seal: NBR; spring retention stainless steel
Pressure: vacuum to 20 bar (~290 psi)
Temps: –20‑80 °C; allows thousands of reconnections without degradation

Festo QSM‑M5‑4 (mini QS series):

Body: nickel‑plated brass; thread: M5 male
Tube port: push‑in 4 mm
Pressure: up to 14 bar
Temp range: –10 °C to +80 °C
Compact size, ideal for confined spaces