SAE 4 Bolt Flange

QS Flange: Fujian SAE 4 Bolt Flange

SAE code 61 four-bolt flange, 1-1/4 inch rated 3000 PSI, female NPT thread, complete with 4 bolts and 1 O-ring for hydraulic machinery joints.

Quantity

Contact Now

add to cart

One-Minute Overview

Four-bolt SAE flange with a female NPT thread.
1-1/4 inch, rated 3000 PSI, code 61 series.
Supplied with 4 bolts and 1 O-ring per joint.
Fits industrial, construction and agricultural hydraulic machinery.

The SAE 4 bolt flange joins a hydraulic line through a female NPT thread and a four-bolt pattern rated to 3000 PSI. The code 61 size of 1-1/4 inch covers common pump and motor ports, and the flange ships with the four bolts and one O-ring needed to close the joint. Its compact footprint makes it a practical pick wherever hydraulic components are packed close together.

Name: SAE 4 Bolt Flange
Size: 1-1/4"
Pressure: 3000 PSI / Code 61
Type: Female NPT Thread Flange
Parts: 4 Bolts and 1 O-ring

A female NPT thread is handy when the line already ends in a male pipe thread: the flange screws on first, then the four bolts carry the joint to the mating SAE port. The single O-ring seals the hydraulic side, so the connection stays leak-free at code 61 pressure. This pattern shows up on industrial machinery, construction equipment and agricultural machines where pumps and motors sit close together. Clean threads, sensible sealant, correct bolt torque and the right O-ring for the fluid decide how the joint behaves in service.

FAQ

Q1. Can I screw this onto any male thread I find lying around?

Only if it is the matching NPT size — the female NPT thread wants a proper male pipe thread of its own size. Pair it with the code 61 port it was built for, seat the O-ring, and torque the four bolts evenly.

Q2. What pressure family does this flange belong to?

It is a code 61 part rated 3000 PSI at 1-1/4 inch. Code 61 is the medium-pressure series of the SAE four-bolt family, and it keeps heads, caps and adapters interchangeable across pump and motor connections in the same circuit.

Q3. Do I need to buy bolts and an O-ring separately?

Nope — the flange arrives with four bolts and one O-ring, so you can close the joint straight from the box. If the system fluid or temperature calls for a specific O-ring material, swap in the grade your circuit specifies. For most jobs the box already has everything the joint needs.

Q4. What is the smallest order I can place?

Standard flange insulation gasket kits start at one set, and standard gaskets, studs, washers and sleeves start at one piece. Parts made to your drawing or to a non-standard bolt pattern are quoted one by one, because the minimum really depends on the material and the tooling involved.

Send Message