Compatible Machines
- 224-626 (Series A) 23:1 Ratio Hydra Sprayer
- 231-159 23:1 Ratio Hydra Sprayer
- 231114 (Series A) 23:1 Ratio Hydra Sprayer
- 226970 (Series B) 23:1 Ratio Hydra Sprayer
- 231-133 (Series B) Gas Powered Airless Line Driver
- 231-141 Gas Powered Airless Line Driver
- 231-149 (Series C) 4.0 HP Gas Powered Airless Line Driver
- 231-151 4.0 HP Gas Powered Airless Line Driver
- 231-150 (Series C) 5.5 HP Gas Powered Airless Line Driver
- 231-152 5.5 HP Gas Powered Airless Line Driver
- 231-205 (Series A) Gas Powered Airless Line Driver
- 3050 (800-681) Hydra-Clean Pressure Washer
- 3540 (800-635) Hydra-Clean Pressure Washer
- 3540 (800-636) Hydra-Clean Pressure Washer
- 3540 (800-706) Hydra-Clean Pressure Washer
- 4043 (800-637) Hydra-Clean Pressure Washer
- 4043 (800-707) Hydra-Clean Pressure Washer
- GH2560 (965168) Gas Hydraulic Airless Sprayer
- GH3640 (687327) Gas Hydraulic Airless Sprayer
- GH5030 (687100) Gas Hydraulic Airless Sprayer
Product Overview
The Graco 100015 Nut Hex MSCR is a genuine OEM hex machine nut used across multiple Graco assemblies. It secures covers, clamps, brackets, and other hardware in sprayers, line drivers, and pressure-wash systems.
| Part Number | 100015 – Nut, Hex MSCR |
| Thread / Form | 1/4-20 UNC-2A/2B (as referenced in Graco manuals) |
| Typical Use | General fastening on Graco spray equipment, line stripers, cleaners, and accessories |
| Category | OEM fastener (hex machine nut) |
Why choose OEM 100015?
- Fit & function: matches original Graco hardware dimensions for reliable torque-up.
- Versatile: used on a wide range of Graco models (see list above).
- Service-manual backed: thread spec appears directly in Graco parts lists.
Quick Reference Table
| Assembly Examples | Common Companion Hardware | Notes |
| Dispenser bars / brackets | 100016 Lockwasher, 1/4" | Pairing with lockwasher helps maintain clamp force under vibration. |
| Heater kits / clamp plates | 100058 Hex cap screw | Used where 1/4-20 studs/bolts are specified in manuals. |
| Surge tank mounts / shields | 100902 Screw, 100270 Screw | Appears in Graco surge-tank install references. |
Fitment Tips
- Confirm your machine’s parts list for 100015 before ordering.
- Use correct torque; pair with the specified washer (often 100016 lockwasher) where called out.
- Replace in sets if hardware shows wear, corrosion, or thread damage.
Frequently Asked Questions
In Graco parts descriptions it denotes a standard hex machine screw nut used with 1/4-20 machine-screw hardware in various assemblies.
Use OEM when possible. If substituting, match 1/4-20 UNC thread, strength/grade, material, and any washers specified in your Graco manual to maintain safety and performance.
Many assemblies call out 100016 Lockwasher (1/4") alongside 100015. Follow your specific parts diagram; use thread-locker only if specified.
It appears in multiple Graco parts lists (e.g., dispenser bars, heater kits, surge-tank mounts) with a 1/4-20 specification. Check your model’s manual for exact locations.
Verify thread engagement, replace worn hardware in pairs/sets, and torque to spec. Re-check after first use, especially on high-vibration assemblies.
