We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Brass pin lug swivel coupling, NST female to NPT male, gold finish

Value Brand

Value Brand Pin Lug Swivel Coupling NST x MNPT 2-1/2 In x 1-1/2 In

SKU CH-ZYCF-PS276

Brass pin-lug swivel adapter connects 1-1/2 in NPT male to 2-1/2 in NST female threads

  • Swivel action prevents hose twist during use
  • Pin lug tightening allows tool-free secure connections
  • Brass construction resists corrosion in water service
  • Adapts 2-1/2 inch NST to 1-1/2 inch NPT threads
  • California Prop 65 chemical warning applies to this fitting

Brass Fire Hose Adapter

This brass pin-lug swivel coupling joins a 2-1/2 inch NST female thread to a 1-1/2 inch NPT male thread. It is built for fire-service and industrial water-supply lines where a rotating connection prevents hose twist during deployment. The all-brass construction resists corrosion in wet environments. California Proposition 65 warnings apply to chemicals in the material.

Pin-Lug Hand Tightening

The coupling tightens by hand using the integrated pin lugs, so no wrenches are required on site. The swivel action allows the female end to rotate freely once engaged, reducing kink stress on the attached hose. Misaligned threads or debris in the lugs can prevent a full seal, so inspect both faces before each use. Overtightening may deform the soft brass lugs.

NST-to-NPT Interface Limits

The NST (NH) thread form differs from NPT in pitch and profile, so this adapter only works where one side is true NST and the other is NPT. It cannot connect two NPT ports or two NST ports without additional fittings. Brass is unsuitable for high-pressure hydraulic service or aggressive chemical lines. Pressure rating depends on the hose and clamp system used, not the adapter alone.

Highlights

  • Swivel action prevents hose twist during use
  • Pin lug tightening allows tool-free secure connections
  • Brass construction resists corrosion in water service
  • Adapts 2-1/2 inch NST to 1-1/2 inch NPT threads
  • California Prop 65 chemical warning applies to this fitting

Specifications

BrandZORO SELECT

Questions about this item

How can I confirm the swivel action is working correctly after threading the 1-1/2 in NPT male end?

Hand-tighten the pin lugs on the 2-1/2 in NST female side, then rotate the swivel; it should turn smoothly without binding, indicating the brass-on-brass joint is seated and free.

What comes in the box and are gaskets or thread sealant included?

The package contains only the brass pin-lug swivel coupling; NST gaskets and NPT thread sealant or tape must be purchased separately to complete the connection.

Which size combination should I select for a 1-1/2 in pipe and a 2-1/2 in fire hose thread?

Choose the 1-1/2 in NPT male by 2-1/2 in NST female version; it matches those exact pipe and hose thread diameters.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.