Please wait while we process your order...

Product successfully added to your cart.
Cart Image

Quantity in Cart: 1

Continue Shopping Shopping Cart
Item removed from Cart
X
 
×

sprayersandparts Logo

Product Image

Graco 101926 Nut Lock

Graco 101926 Nut, Lock is a genuine OEM hardware part designed to secure components under vibration and maintain tight assembly in spray equipment.

  • Thread size: 1/2-20 NF (fine thread)
  • Used on Hydra-Cat and 8900 Proportioner series
  • Prevents loosening under high-pressure operation
  • Durable and reliable Graco OEM construction

$27.3
0
Based on 0 reviews
5 ★
0%
4 ★
0%
3 ★
0%
2 ★
0%
1 ★
0%

About the Graco 101926 Nut, Lock (1/2-20 NF)

Genuine Graco hardware lock nut for securing pump and proportioner assemblies under vibration.

Compatible Machines

  • Graco 8900 Proportioner series — parts lists call out 101926 as “LOCKNUT; 1/2-20 NF”.
  • Graco Hydra-Cat Proportioners (various fixed-ratio / President / King Hydra-Cat models) — manuals list 101926 “NUT, lock; 1/2-20 (nylon insert)”.
  • Graco Bulldog / High-Volume Plural Component Pump assemblies — used on tie-rod/yoke connections where a 1/2-20 lock nut is specified.
  • Other Graco pump, frame, and manifold assemblies that specify 101926 or a 1/2-20 NF lock nut in the OEM parts diagram (verify per model).

Key Features

  • OEM fit: Genuine Graco part 101926 for precise fit and reliable torque retention.
  • Locking design: Helps prevent loosening under vibration on high-pressure sprayer systems.
  • Service-friendly: Common hardware across multiple Hydra-Cat and proportioner platforms.

Technical Specifications

Part Number 101926
Description Nut, Lock (lock nut)
Thread Size 1/2-20 NF (some manuals note nylon insert)
Typical Locations Displacement pump tie-rod/yoke interfaces, frame/plate mounts, manifold brackets (per model)
Compatibility Note Use wherever the OEM diagram lists 101926 or a 1/2-20 lock nut; confirm per specific sprayer model.
Brand Graco (OEM)

Installation Tips

  • Follow your machine’s service manual for torque specs and sequence.
  • Inspect mating threads; replace if damaged or if locking feature shows wear.
  • When noted by the OEM, apply thread lubricant or thread locker as specified.

Frequently Asked Questions

The OEM description lists it as 1/2-20 NF (fine thread). Some Hydra-Cat manuals note a nylon-insert version.

Confirmed usage on Graco 8900 Proportioner and multiple Hydra-Cat Proportioners (fixed-ratio, President/King variants). It also appears in plural-component pump assemblies. Always verify against your model’s parts list.

It’s a hardware fastener, not a typical wear item. Replace if threads are damaged or if the locking feature no longer holds torque.

Several Hydra-Cat manuals describe 101926 as “1/2-20 UNF with nylon insert.” Check your model diagram to confirm the exact callout.

Torque values vary by assembly (tie-plate/yoke vs. frame mount). Always use the torque spec from your machine’s OEM manual.

Subscribe to our newsletter to get exclusive discounts and new theme launches right in your inbox.

You may unsubscribe at any moment. For that purpose, please find our contact info in the legal notice.

Payment Method   Payment Method   Payment Method   Payment Method 

ADDRESS