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Code 61 Flat Socket Weld - Pipe | ||||||||||||||||
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O-Ring Part # | Flat Face Part # | Pipe Size | Pad Size | A | B | C | D | E | F | G | H | J | K | L | Mounting Hardware | |
O-Ring | SHCS | |||||||||||||||
W4-8-8 | W61-8-8 | 0.5 | 0.5 | 1.813 | 2.125 | 0.688 | 1.5 | 0.75 | 0.56 | 1 | 0.502 | 0.855 | 0.344 | 5/16-18 | 210 | 5/16-18X1.50 |
W4-12-12 | W61-12-12 | 0.75 | 0.75 | 2.063 | 2.563 | 0.875 | 1.875 | 0.75 | 0.56 | 1.25 | 0.752 | 1.062 | 0.406 | 3/8-16 | 214 | 3/8-16X1.50 |
W4-16-16 | W61-16-16 | 1 | 1 | 2.313 | 2.75 | 1.031 | 2.063 | 0.88 | 0.63 | 1.56 | 1.002 | 1.328 | 0.406 | 3/8-16 | 219 | 3/8-16X1.75 |
W4-20-20 | W61-20-20 | 1.25 | 1.25 | 2.875 | 3.125 | 1.188 | 2.313 | 0.94 | 0.69 | 1.75 | 1.252 | 1.672 | 0.469 | 7/16-14 | 222 | 7/16-14X1.75 |
W4-24-24 | W61-24-24 | 1.5 | 1.5 | 3.25 | 3.688 | 1.406 | 2.75 | 1.19 | 0.75 | 2.115 | 1.502 | 1.922 | 0.531 | 1/2-13 | 225 | 1/2-13X2.25 |
W4-32-32 | W61-32-32 | 2 | 2 | 3.813 | 4 | 1.688 | 3.063 | 1.38 | 0.875 | 2.49 | 2.002 | 2.406 | 0.531 | 1/2-13 | 228 | 1/2-13X2.50 |
W4-40-40 | W61-40-40 | 2.5 | 2.5 | 4.281 | 4.5 | 2 | 3.5 | 1.75 | 1 | 2.995 | 2.502 | 2.906 | 0.531 | 1/2-13 | 232 | 1/2-13X2.75 |
W4-48-48 | W61-48-48 | 3 | 3 | 5.156 | 5.313 | 2.438 | 4.188 | 2.12 | 1.25 | 3.615 | 3.002 | 3.547 | 0.656 | 5/8-11 | 237 | 5/8-11X3.50 |
Questions & Answers

Popular Questions
2 months ago
2 months ago
yes this will work on your crimper as long you use our crimp specifications. Which we offer on our site. See full answer »
2 months ago
2 months ago
Yes, this fitting interchanges with Weatherhead 04U-106. Compatibility with Weatherhead products allows for versatile use in existing systems, offering flexibility and ease of integration. The mp-04 fitting ensures a reliable connection. See full answer »
2 months ago
2 months ago
The hose fitting has a 1/4" inside diameter. This size is ideal for applications requiring a precise and compact hydraulic connection, ensuring efficient fluid transfer in tight spaces. This type of fitting is commonly referred to as mp-04. See full answer »
2 months ago
2 months ago
The male pipe fitting is 3/8". This size is commonly used in hydraulic systems, providing a robust connection that can handle high pressures effectively. This fitting is often referred to as "mp-04-06. See full answer »
2 months ago
2 months ago
No, a sealing washer or O-ring is not required for this connection. The NPTF thread design in the mp-04 creates a seal as it is tightened, offering convenience and reducing the need for additional sealing components. See full answer »
2 months ago
2 months ago
Sealing tape or thread sealant is often used to ensure a leak-free connection when joining the mp-04 fitting with a matching female NPTF fitting. This practice enhances the reliability of the seal, especially under varying pressures and temperatures. See full answer »
2 months ago
2 months ago
The male pipe fitting on the MP-04 uses NPTF (National Pipe Taper Fuel) threads. The tapered design of NPTF threads ensures a tight, leak-free seal, which is essential for maintaining system integrity and preventing fluid loss. See full answer »
2 months ago
2 months ago
The male end features an mp-04 Parker compatible 43 series fitting. This unique shape provides a reliable seal at high pressures, making it suitable for demanding hydraulic applications where safety and performance are critical. See full answer »
2 months ago
2 months ago
The benefit of the Parker compatible 43 series fitting in the mp-04 is that it ensures a reliable seal at high pressures. This feature is valuable for anyone needing a dependable hydraulic connection in high-pressure environments, reducing the risk of leaks and ensuring system efficiency. See full answer »
