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SSP ST THD PLUG (4-P5ON-SS)

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Description & Features

The SSP ST THD PLUG (4-P5ON-SS) is a reliable industrial component designed for secure sealing in hydraulic systems. Manufactured by SSP Fittings Corp, this plug ensures durability and robust performance thanks to its high-quality construction. Ideal for applications requiring a dependable seal in a hydraulic setup, this plug is a critical part for maintaining system integrity. Its compatibility with various hydraulic systems makes it a versatile choice for industry professionals.

This plug is designed with precision to fit seamlessly into existing hydraulic configurations, ensuring leak-free operation. With alternate part numbers like C1CX84, C1MK12, and GP-4, it offers flexible integration options, making it a practical choice for engineers and technicians seeking reliable components.

SKU: 4GP

Supplier Part Number (MPN): 4GP

Alternate Part Numbers: C1CX84, C1MK12, GP-4, MI-07467608, MINO-00640X84532

Specifications

Connection Size 1
1/2 in
Connection Type
Male SAE Threaded
Connection Type 1
Male SAE Threaded
Dimension Standards
ANSI/ASME B1.20.1, ANSI/ASME BS 21, SAE J514, JIS B0203
Dimensions
0.67 in L
Fitting Type
Plug
Hex Size
0.563 in
Material
Stainless Steel
Material Construction
316 Stainless Steel
Series
GP Series
Thread Size
7/16-20

Product Questions & Answers (2)

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Question by: Jimmy W on Dec 20, 2025, 3:41 PM
what exactly is this plug used for, is it just to block off a port or does it do somethin else?
Answer by: Customer Support on Dec 22, 2025, 6:07 AM
Port blocking is the main job here. When you've got an unused threaded port on a hydraulic valve, manifold, or fitting body, you thread one of these in to seal it off and keep contamination out and pressure in. SSP makes solid fittings components, so this is a proper plug, not a temporary cap. If you've got an open port sitting exposed on a system, this is the right kind of fix.
Question by: Kirk A on Nov 3, 2025, 10:32 AM
What exactly is this plug made of?
Answer by: Customer Support on Nov 4, 2025, 2:18 PM
This SSP ST THD PLUG is made of stainless steel, which should hold up well.

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