Description
Nitto Kohki
Nitto Hi-Cupla Air Coupling Socket — 1/4″ Male Thread (20SM)
Part No: 20SM | Barcode: 16922 | Series: Hi-Cupla
The Nitto 20SM is a genuine Nitto Kohki Hi-Cupla air coupling socket that threads into a 1/4″ female air outlet or manifold and accepts any 20-series Hi-Cupla plug for fast one-hand connection. The socket houses the automatic shut-off valve, so air stops the instant a plug is removed — no air loss and no whipping hose. Built from heat-treated steel for long workshop life.
Genuine Nitto Kohki
Hi-Cupla
1/4″ Size (20 Series)
1/4″ Male Thread
Auto Shut-Off Valve
Heat-Treated Steel
Working Pressure 1.5 MPa
Suitable For
Compressed Air Lines
Air Tools & Nailers
Workshop Air Reticulation
Blow Guns & Tyre Inflators
Key Features & Benefits
- Genuine Nitto Kohki Hi-Cupla — the industry-standard one-touch air coupling used across Australian workshops, so it interchanges with the Nitto-pattern fittings you already own.
- Built-in automatic shut-off valve — air is cut off the moment a plug disconnects, stopping pressure loss and dangerous hose whip.
- 1/4″ BSPT male thread — threads directly to 1/4″ air outlets, tools and manifolds for a permanent leak-free joint (use thread tape on the parallel face).
- Heat-treated steel construction — critical wear parts are hardened for long service life on busy compressed-air systems.
- 1.5 MPa working pressure — rated to 215 psi, well above typical 100–120 psi shop air, with a generous safety margin.
When to Use This Fitting
Reach for the Nitto 20SM when you need the valved half of an air connection — it threads into a 1/4″ female air outlet or manifold and accepts any 20-series Hi-Cupla plug for fast one-hand connection. Fit sockets to your fixed points (compressor outlet, wall reticulation, hose reels) so tools can be swapped instantly without bleeding the line. Pair it with the matching halves in the table below — every Nitto 20-series plug and socket inter-connects regardless of whether the back end is a thread or a hose tail.
Pro Tip: Nitto-pattern is one of several incompatible quick-coupler standards (Nitto, ARO, CEJN and Euro all look similar but will not seat together). Standardising your whole shop on the Nitto Hi-Cupla pattern shown here means any plug mates with any socket across the 20, 30 and 40 sizes.
Authorised Australian Dealer — This product is a genuine Nitto Kohki coupling, backed by full Australian manufacturer warranty and local support from Nitto Kohki Australia.
Product Specifications
| Part No. | Type | Size / Connection |
|---|---|---|
| 20PF | Plug | 1/4″ — 1/4″ Female Thread |
| 20PM | Plug | 1/4″ — 1/4″ Male Thread |
| 20SF | Coupler (Socket) | 1/4″ — 1/4″ Female Thread |
| 20SM ★ | Coupler (Socket) | 1/4″ — 1/4″ Male Thread |
| 30PH | Plug | 3/8″ — 3/8″ Hose Tail |
| 30PM | Plug | 3/8″ — 3/8″ Male Thread |
| 30SH | Coupler (Socket) | 3/8″ — 3/8″ Hose Tail |
| 40PH | Plug | 1/2″ — 1/2″ Hose Tail |
| 40SH | Coupler (Socket) | 1/2″ — 1/2″ Hose Tail |
| 40SM | Coupler (Socket) | 1/2″ — 1/2″ Male Thread |
| RL20PM | Rotary Plug | 1/4″ — 1/4″ Male Thread |
| RL20PFF | Rotary Plug | 1/4″ — 1/4″ Female Thread |
| NC200-30SH | Coupler (Socket) | 3/8″ — 3/8″ Hose Tail |
| L200-30SH | Lock Coupler (Socket) | 3/8″ — 3/8″ Hose Tail |
★ You are viewing the highlighted item. Other plugs, sockets and sizes in the Nitto range are also available — mix and match to suit your compressor, hose and tools.
Browse our wide range of air fittings & piping at Alltools Geelong.
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