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Graco 102087 Nut Full Hex

Graco 102087 Nut (Full Hex) is a 5/8-18 UNF jam nut designed for secure locking in hydraulic motor assemblies such as the Viscount II 217022. Ideal for vibration-prone applications where reliable fastening is essential.

  • Thread: 5/8-18 UNF
  • Type: Full Hex / Jam Nut
  • Used In: Viscount II Hydraulic Motor 217022 (Series E)
  • Material: Steel (OEM grade)
  • Quantity Per Unit: 4 pcs

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Overview & Compatibility for Graco 102087 Nut (Full Hex)

Compatible Machines

  • Viscount II Hydraulic Motor — Model 217022 (Series E) uses four 102087 jam nuts (5/8-18) on the tie-rod/trip-rod assembly.
  • Other Graco hydraulic motor assemblies that specify a 5/8-18 jam nut may also use 102087 — confirm in your parts manual/Exploded View before ordering.

What is the Graco 102087 Nut, Full Hex?

OEM fastener specified by Graco as a hex jam nut (full hex, thin pattern) with 5/8-18 UNF thread. It is used to lock an adjacent nut or component to prevent loosening from vibration (common on tie-rod/trip-rod locations in hydraulic motor assemblies).

Technical Specifications

Attribute Detail
Part Number 102087
Description Nut, Full Hex (hex jam nut, thin pattern)
Thread 5/8-18 UNF (fine thread)
Typical Use Locks the primary nut/assembly on tie-rod or trip-rod locations (e.g., Viscount II hydraulic motor).
Known Quantity Model 217022 (Series E) uses 4 pcs in the assembly.
Material Steel (OEM spec; finish may vary by production run)

Key Highlights

  • OEM fit for select Viscount II hydraulic motor assemblies.
  • 5/8-18 fine thread for secure lockup in high-vibration environments.
  • Thin jam-nut profile (full hex) for locking against a mating nut.

Fitment Notes

  • Match the thread spec (5/8-18) and location in your parts diagram before purchase.
  • If replacing a single fastener, inspect mating tie-rods, washers, and primary nuts for wear or thread damage.
  • Always follow the torque values from your specific model’s service manual.

Frequently Asked Questions

Use a jam-nut (thin hex) with the same 5/8-18 thread to maintain correct stack height and locking function. For best results and reliability, use the OEM 102087 specified for your assembly.

The Viscount II Hydraulic Motor Model 217022 (Series E) parts list includes 102087 jam nuts (quantity 4) on the tie-rod/trip-rod assembly. Other models may vary—verify against your OEM manual before ordering.

Torque is model-specific. Refer to your machine’s service manual for exact values. Applying the correct torque is critical to maintain clamp load and prevent loosening under vibration.

Cross-check the part number and thread spec (5/8-18) in the OEM exploded parts diagram for your exact model and series/serial range. If your diagram calls out 102087, you have a direct match.

No—it's a fastener (hex jam nut). It does not contact coating materials; it provides mechanical locking in the assembly.

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