Graco 102533 Hex Jam Nut
$74.25
In Stock
The Graco 102533 Hex Jam Nut is a genuine OEM stainless-steel lock nut used in Bulldog and King pump assemblies to secure components against vibration and movement.
- Thread Size: 5/8-18 fine thread
- Material: Stainless Steel (SST)
- Used In: Bulldog 949444, 954180 & King 220648 pumps
- Purpose: Prevents loosening and ensures proper alignment
Quantity
Genuine OEM Part
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Overview & Compatibility – Graco 102533 Hex Jam Nut
The genuine Graco part no. 102533 is a Hex Jam Nut used to lock and secure assemblies in heavy-duty pump systems. It’s commonly found in industrial Graco Bulldog and King displacement pump families, where vibration resistance and correct thread engagement are critical.
Compatible Machines
- Graco Bulldog – model 949444 (10:1)
- Graco Bulldog – model 954180 (10:1)
- Graco King – model 220648 (20:1)
- Other Graco Bulldog/King displacement pump assemblies (verify by parts list/serial)
Technical Specifications
| Part Number | 102533 |
|---|---|
| Description | Nut, Hex, Jam (lock nut) |
| Thread Size | 5/8-18 (fine thread) |
| Material | Stainless Steel (SST) |
| Typical Assembly | Displacement pump/rod assemblies on Bulldog & King series |
| Genuine/OEM | Graco OEM replacement part |
Key Benefits
- Prevents loosening in high-vibration, high-duty cycles
- Correct fit and thread engagement for Graco pump assemblies
- OEM quality helps maintain performance and reliability
Install & Service Notes
- Verify the 5/8-18 thread and location in your model’s parts manual.
- Inspect mating threads; replace if worn or damaged.
- Torque per the machine’s service manual for adjacent components.
Frequently Asked Questions
It locks components (such as a rod or sleeve) in position and resists loosening from pump vibration and pressure pulsation—helping maintain correct alignment and sealing.
It’s primarily used in Bulldog/King displacement pump assemblies. Cross-check your specific sprayer’s parts manual for the exact nut part number before ordering.
The thread is 5/8-18 (fine). Always confirm the mating component uses the same thread and class of fit.
Stainless Steel (SST), providing corrosion resistance and durability in demanding environments.
If threads are clean and undamaged, reuse may be possible; however, replacement is recommended during major overhauls to ensure secure locking and longevity.
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