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Graco 100131 Full Hex Nut

The Graco 100131 Full Hex Nut is a durable steel fastener used across many Graco machines for secure assembly and hardware stability.

  • Part Number: 100131
  • Type: Full Hex Nut
  • Material: Steel
  • Used In: GrindLazer, Ram Units, Airless Sprayer Frames
  • Function: Fastens frames, guards, and brackets securely

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Overview & Key Specs

The Graco 100131 Full Hex Nut is a standard six-sided hardware fastener used across multiple Graco assemblies. It secures brackets, guards, frames, and component interfaces where a full-height hex nut is specified.

Compatible Machines

Because 100131 is a generic Graco fastener, it appears in numerous equipment parts lists. Always confirm against your unit’s parts manual before ordering.

  • Graco GrindLazer floor-preparation machines (selected models; see parts diagrams)
  • Graco Ram / Supply Units and related pumping assemblies (selected models)
  • Graco Airless Sprayers (frames, carts, and accessory sub-assemblies where this nut is specified)
  • Carts, Guards & Mounting Hardware across various Graco product families using the same fastener callout

Quick Facts

Part Number 100131
Official Name Full Hex Nut
Function General-purpose fastener for securing components in Graco equipment assemblies
Typical Placement Frames, brackets, guards, hose/cable retainers, and accessory mounts
Thread / Size Note Varies by assembly. Many manuals pair this callout with common UNC hardware (e.g., 3/8-16). Verify the exact thread and grade in your model’s parts list.
Material Steel (finish may vary by production and application)

How to Verify Fitment

  1. Locate your machine’s model and serial code.
  2. Open the official parts manual/diagram and search for callout “100131 — Nut, full hex”.
  3. Confirm the thread specification (e.g., UNC/metric), grade, and quantity shown for your assembly.

Installation Tips

  • Start threads by hand to prevent cross-threading.
  • Use a calibrated torque wrench when a torque value is specified.
  • Replace any rounded or corroded hardware during service.
  • If the joint requires threadlocker or a prevailing-torque nut, follow the machine manual.

Frequently Asked Questions

Not universally. 100131 is a specific full hex nut callout. Only substitute if your parts manual lists 100131 for that location or an official supersession is documented for your exact model.

The thread/grade can vary by assembly context. Many Graco diagrams pair this callout with common UNC sizes (e.g., 3/8-16), but you must verify the specification for your unit in its official parts list.

It appears across multiple Graco product families—commonly in GrindLazer floor-prep units, Ram/Supply pump assemblies, and select airless sprayer frames/carts. Check your model’s parts diagram to confirm the callout.

Torque depends on the joint, bolt size/grade, and material. Use the value in your machine’s service documentation; if none is provided, follow standard torque charts for the confirmed thread and grade.

Keep the same grade and finish specified for the assembly, especially in corrosive environments. If exposure is high, consider OEM hardware or an equal/higher corrosion-resistance finish approved for your machine.

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