Graco 101345 Hex Jam Nut
$16.90
In Stock
The Graco 101345 Hex Jam Nut is a genuine OEM fastener used in several Graco LineLazer and Line Driver models for vibration-resistant locking.
- Thread Size: 1/4-20 UNC
- Material: Steel, low-profile jam design
- Used On: LineLazer 3900 / 5900, 231-series Line Drivers
- Purpose: Locks brackets and mounts securely under vibration
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Genuine OEM Part
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Compatible Machines — Graco 101345
- Graco 231-133 (Gas-Powered Airless Line Driver)
- Graco 231-141 (Gas-Powered Airless Line Driver)
- Graco 231-149 (4.0 HP Gas-Powered Airless Line Driver)
- Graco 231-150 (5.5 HP Gas-Powered Airless Line Driver)
- Graco 231-151 (4.0 HP Gas-Powered Airless Line Driver)
- Graco 231-152 (5.5 HP Gas-Powered Airless Line Driver)
- Graco 231-205 (Gas-Powered Airless Line Driver)
- Graco LineLazer 3900
- Graco LineLazer 5900
Product Overview
The Graco 101345 Hex Jam Nut is an OEM fastener used across select Graco line-stripers and line-driver assemblies. As a low-profile jam nut, it helps lock components in place under vibration. Typical uses include brackets, covers, and mounting studs where a secondary “jam” is required.
Key Specifications
| Part Number | 101345 |
|---|---|
| Description | Nut, Hex — Jam Nut |
| Thread | 1/4-20 (UNC), low-profile jam pattern |
| Material | Steel (OEM spec) |
| Application | Locking/bracing of assemblies exposed to vibration (e.g., stripers/line drivers) |
| Brand | Graco |
Benefits & Use Cases
- Prevents loosening of brackets and covers under vibration.
- Low profile for tight assemblies where standard nuts may not fit.
- OEM fit maintains alignment and protects nearby components.
Installation Tips
- Verify the mating stud/bolt is 1/4-20 UNC before installation.
- Use a second wrench to counter-hold if tightening against another nut (jam-nut method).
- If specified by your manual, apply a suitable thread-locker; avoid over-torque.
- Inspect adjacent hardware (washers, studs, brackets) and replace if worn or corroded.
Notes
Appearance and location can vary by model/year. Always confirm with your machine’s parts diagram to ensure the 101345 is the correct fastener for the intended position.
Frequently Asked Questions
Functionally, a quality 1/4-20 jam nut may fit, but the OEM Graco 101345 ensures correct tolerance, hardness, and finish for the assembly. OEM parts help protect fit, performance, and warranty expectations.
It is commonly used on bracket and cover mounts, or as a locking nut on studs that see continuous vibration. Exact location varies by model—refer to your unit’s parts manual for the callout.
Torque values can differ by assembly. If the parts manual does not specify a torque, tighten securely without over-compressing brackets or deforming hardware. Use common 1/4-20 jam-nut best practices and re-check after first use.
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