Parker Straight connector,1/4in OD 1/4in NPT, 4MSC4N-316

RS PRO Tap Set, 1/4 UNC Thread, UNC Standard, Hand Tap, 152439

EXACT Thread Die, 1/4-28, 20mm Od, 04411

Recoil Thread Repair Insert, 1/4-28 UNF, Drill Size 6.7mm (10), 24043

RS PRO Acetal Copolymer 1/4in NPT Connector, 6235038

Norgren NC Solenoid Valve - Solenoid G 1/4 96000 Series, 9601440000000000

Legris, G 1/4 Female To G 1/4 Female (3), 0915 00 13

Norgren NC Solenoid Valve - Solenoid G 1/4 95000 Series, 9500400000000000

Auxiliary Switch RCD — 1 X NO + 1 X NC, 4 A - EATON 248433

Recoil Thread Repair Insert, 1/4-20 UNC, Drill Size 6.7mm (10), 23043

Draper 81299 1-4 Inch BSP Air Coupling Parallel Female Thread

SAM 3/4 → 1/2 in Socket Adapter, 55 mm Overall, NC-230

Draper 81300 1-4 Inch BSP Air Coupling Tapered Male Thread

Draper 1/4" Male Thread PCL Tapered Airflow Coupling (Sold Loose)

RS PRO Thread Die, 1/4 in BSPT, 2052306