Graco 16U977 Jam Nut
$100.35
$112.00
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The Graco 16U977 Jam Nut is an OEM hardware piece used to securely lock pump-lower components in high-pressure Graco fireproofing and industrial pump systems.
- Ensures stable pump-lower alignment
- Prevents loosening under heavy pressure
- Durable OEM-grade metal construction
- Fits F340e, F680e & compatible pump-lower assemblies
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
About the Graco 16U977 Jam Nut
The Graco 16U977 Jam Nut is a genuine OEM hardware component used to secure and lock critical pump-lower parts in high-pressure industrial spraying and pumping equipment. It maintains alignment, prevents loosening under pressure, and ensures long-term reliability of the pump assembly.
Compatible Machines
- Graco F340e Portable Fireproofing Pump
- Graco F680e Fireproofing Pump
- Graco Industrial Pump Lower Assemblies that utilise 16U977 hardware
Key Features
- OEM jam nut designed for industrial pump systems
- Ensures secure locking of pump components under pressure
- Durable metal construction for long service life
- Helps maintain correct pump-lower alignment
Technical Information
| Specification | Details |
|---|---|
| Part Number | 16U977 |
| Category | Jam Nut / Hardware Component |
| Compatibility | Pump-Lower Assemblies in Fireproofing & Heavy-Duty Graco Systems |
| Function | Locks and secures pump components under high pressure |
Frequently Asked Questions
It secures the pump-lower components, preventing loosening during high-pressure operation and maintaining proper assembly alignment.
Yes, the 16U977 is a genuine OEM Graco component designed to match exact factory specifications.
No. This jam nut is specifically used in industrial equipment such as fireproofing pumps and pump-lower assemblies, not in typical household or contractor paint sprayers.
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