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Graco 121946 No.6 x 0.875 Phillips Self-Tapping Screw

The Graco 121946 screw is a durable, OEM-quality self-tapping fastener for secure assembly in high-pressure sprayer and pump systems. Key details include:

  • Size: #6 x 0.875 inches
  • Drive: Phillips pan head
  • Material: Stainless steel for corrosion resistance
  • Used in manifolds, pump housings, and filtration modules
  • Ensures consistent torque retention in high-pressure systems

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Graco 121946 – #6 x 0.875 Phillips Self-Tapping Screw

This Graco 121946 screw is a high-quality, OEM fastener engineered for secure, reliable installation in airless sprayer pumps, manifolds, and high-pressure filtration systems. Designed for corrosion resistance and consistent torque retention.

Compatible Machines

  • Graco Airless Sprayer Pumps
  • Graco High-Pressure Filtration Modules
  • Graco Inline Filter Housings
  • Other professional Graco fluid-handling systems

Technical Specifications

Part Number 121946
Thread Size No. 6 (3.5 mm) self-tapping
Length 0.875 inches (22.2 mm)
Drive Type Phillips (#1 & #2 compatible)
Material 18-8 Stainless Steel (Type 304) with optional black oxide finish
Typical Use Manifolds, pump housings, high-pressure filtration assemblies

Key Features & Benefits

  • Premium stainless steel construction for corrosion resistance and durability
  • Pan head provides uniform clamping force
  • Self-tapping threads for consistent engagement without pre-tapping
  • Maintains torque and clamp force in high-pressure systems up to 4500 psi
  • Compatible with both manual and automated assembly tools

Installation & Best Practices

  1. Use a calibrated torque driver (5–7 in-lb) to avoid stripping threads.
  2. Check drive recess for wear to prevent cam-out during installation.
  3. Apply thread-sealants only if OEM guidelines specify.
  4. Inspect screws during routine maintenance and replace if worn or damaged.

Frequently Asked Questions

Used to fasten manifolds, pump housings, and high-pressure filtration assemblies in Graco airless sprayer systems and fluid-handling equipment.

Reuse is only recommended if the threads and drive recess remain in good condition. Replace if over-torqued or damaged.

Use a torque driver between 5–7 in-lb as per OEM specifications to ensure secure installation without damaging substrates.

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