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Aluminium threaded flange, flat face, four bolt holes

Zoro Select

Zoro Select BULK-PF-455 Flange Aluminum Threaded 4 5/8 in tubing

SKU CH-HMYA-PW612

Aluminum threaded flange connects 1¼-inch Schedule 40 pipe, rated 125 psi at 72 °F and 185 psi steam

  • Aluminium construction resists corrosion using 6063 alloy
  • Rated for 125 psi at 72 °F and 185 psi steam pressure
  • Operates from 0 °F to 270 °F for wide temperature range
  • Threaded FNPT connection fits Schedule 40 pipe systems
  • Four-bolt pattern on 3 1/2 in circle simplifies installation

Product identity and purpose

The Zoro Select BULK-PF-455 is a flat aluminium flange designed for Schedule 40 piping systems. It provides a threaded FNPT connection with a 4 5/8 inch outside diameter and four bolt holes on a 3 1/2 inch bolt circle for secure mounting.

Suitable applications and limits

This flange suits installers working with 1 1/4 inch nominal pipe size at Class 125 pressure ratings. It is not intended for systems exceeding 125 psi at 72 degrees F or 185 psi maximum steam pressure, nor for environments outside the 0 to 270 degrees F operating range.

Behaviour under sustained load

The 6063 aluminium construction maintains its pressure rating across the full temperature span without derating for short bursts. Bolt-hole alignment remains consistent during thermal cycling, and the 5/8 inch flange thickness resists distortion under continuous 125 psi service.

How it compares

Measured against everything we stock in Garden Hoses & Pipe Tubing, at today’s prices. Recalculated every night.

Price $29.99
Pricier than about 62% of the 973 comparable items (median $21.99).

Specifications

Product
Brand nameZORO SELECT

Questions about this item

What pipe size and schedule does the 4 5/8 in flange fit?

The flange is rated for 1 1/4 in nominal pipe size and Schedule 40 piping.

Can this aluminum flange handle the same pressure as my existing steel fittings?

It is rated for 125 psi at 72 Degrees F and 185 psi maximum steam pressure, which may differ from steel components.

How do I confirm the flange is sealed correctly after installation?

Pressurise the system up to 125 psi at 72 Degrees F and check the four bolt-hole joints for leaks.

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