Two stainless steel pipe fittings: a large hex nut with a knurled collar on the left and a smaller hex-based adapter with a stepped connector on the right.
Nominal Diameter 5mm

053 Series | Safety Lock Single Shut Off Quick Release Couplings & Plugs

The 053 Series is a 5mm single shut off quick release coupling incorporating a safety lock system to prevent accidental disconnection. Based on the world's most widely used coupling profile.

The safety lock mechanism requires deliberate action to release, making it suitable for applications where unintentional disconnection would be hazardous. Available with BSPP threads, metric threads, hose tails, tube connections and bulkhead mountings.

Engineering drawing of a bottle with labeled neck diameters (8.1, 8.9, 7.6, 6.7) and an overall height of 15; large '053' on the label.

Male Thread BSPP Coupling

Part Number Thread Length Diameter
053CSMP18BNN 1/8" 36mm 16mm
053CSMP14BNN 1/4" 38mm 16mm
053CSMP38BNN 3/8" 38mm 16mm
053CSMM01BNN M10 x 1 38mm 16mm
053CSMM21BNN M12 x 1.5 39mm 16mm
053CSMM41BNN M14 x 1.5 39mm 16mm

Female Thread BSPP Coupling

Part Number Thread Length Diameter
053CSFP18BNN 1/8" 36mm 16mm
053CSFP14BNN 1/4" 38mm 16mm
053CSFP38BNN 3/8" 38mm 16mm
053CSFM21BNN M12 x 1.5 39mm 16mm
053CSFM41BNN M14 x 1.5 39mm 16mm

Hose Tail Coupling

Part Number Hosetail Length Diameter
053CSHT04BNN 4mm 46mm 16mm
053CSHT06BNN 6mm 46mm 16mm
053CSHT08BNN 8mm 46mm 16mm
053CSHT09BNN 9mm 46mm 16mm
053CSHT10BNN 10mm 46mm 16mm

Bulkhead To Tube Coupling

Part Number Tube Size Length Diameter
053CSBT06BNN 4 x 6mm 41mm 16mm
053CSBT08BNN 6 x 8mm 41mm 16mm

Bulkhead To Hose Tail Coupling

Part Number Hosetail Length Diameter
053CSBH04BNN 4mm 60mm 16mm
053CSBH05BNN 5mm 60mm 16mm
053CSBH06BNN 6mm 60mm 16mm
053CSBH08BNN 8mm 60mm 16mm

Tube Connection Coupling

Part Number Tube Size Length Diameter
053CSTC06BNN 4 x 6mm 41mm 16mm
053CSTC08BNN 6 x 8mm 41mm 16mm

Male Thread BSPP Plug

Part Number Thread Length
053PSMP18BXN 1/8" 25mm
053PSMP14BXN 1/4" 28mm

Female Thread BSPP Plug

Part Number Thread Length
053PSFP18BXN 1/8" 25mm
053PSFP14BXN 1/4" 25mm

Hose Tail Plug

Part Number Hosetail Length
053PSHT04BXN 4mm 32mm
053PSHT05BXN 5mm 32mm
053PSHT06BXN 6mm 32mm
053PSHT08BXN 8mm 32mm
053PSHT09BXN 9mm 33mm
053PSHT10BXN 10mm 33mm

Advantages

  • Single handed operation.
  • Small dimensions.
  • Safety lock prevents accidental disconnection.

Technical Specifications

Coupling Specifications

Back Body: Brass (MS 58) Nickel Plated
Valve Body: Brass (MS 58) Nickel Plated
Sleeve: Brass (MS 58) Nickel Plated
Spring: Stainless Steel 301
Locking Ring: Stainless Steel 301
Locking Balls: Stainless Steel 301

Plug Specifications

Plug Body: Brass (MS 58) Nickel Plated

Working Limits

Working Temperature

-20°C to +100°C (NBR);
-40°C to +130°C (EPDM);
-15°C to +200°C (Viton)

Working Pressure

35 Bar (safety factor 4:1)

Maximum static working pressure with safety factor 4:1

Interchangeability

Interchangeable With:
  • Parker-Rectus 21 KS
Download Product Information