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Graco 100053 Screw Set Sch

The Graco 100053 Screw Set SCH is a genuine OEM cup-point set screw used in air-driven agitators and mix-tank assemblies for secure shaft and coupling retention.

  • Thread Size: 5/16-18 UNC
  • Length: 0.25 in
  • Torque Spec: 96–132 in-lb (11–15 N·m)
  • Used In: Graco Air-Driven Agitators (Models 25M481, 25C529, 962947 Series B)
  • Type: Socket Head, Cup-Point Set Screw

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Compatible Machines (Verified Models)

  • Graco Air-Driven Agitator — Model 25M481 (uses 100053 as set screws in assembly)
  • Graco Air-Driven Agitator — Model 25C529 (uses 100053 as set screws in assembly)
  • Graco Mix Tank Package — 3/4 HP air-motor system Model 962947, Series B (includes 100053 set screws)

Product Overview

The Graco 100053 Screw, Set, SCH (Socket Head) is a genuine OEM set screw used throughout Graco’s air-driven agitator assemblies and select mix-tank packages. It secures couplings/shafts and other components where a compact, high-grip cup-point set screw is required.

Key Specifications

Part Number 100053
Official Description Screw, Set, Socket Head (SCH); cup-point
Thread Size 5/16-18 UNC
Length 0.25 in
Typical Location Agitator motor coupling/shaft retention, guides, and related sub-assemblies
Installation Torque 96–132 in-lb (≈11–15 N·m)
Genuine/OEM Yes — Genuine Graco

What It Does

  • Locks shafts, couplings, and rotating elements in air-driven agitators to prevent slippage.
  • Compact socket-head profile allows high clamping force in tight spaces.
  • Cup-point tip bites into the mating surface for secure retention.

Frequently Asked Questions

Functionally, it matches a 5/16-18 × 0.25 in cup-point set screw. However, Graco specifies 100053 in OEM manuals, so using genuine parts helps ensure correct hardness, fit, and reliability.

Graco service literature specifies 96–132 in-lb (≈11–15 N·m) for this set screw in agitator assemblies. Always follow your specific model’s manual.

No—this part is primarily used in air-driven agitators and certain mix-tank systems. Check your model manual to verify applicability outside those assemblies.

The item is a single OEM set screw. Quantity required per assembly varies by model (many agitators use four).

Locate your equipment’s parts manual and verify that part 100053 is listed. If you need help, contact support with your model number and series.

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