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Graco 113743 Hex Hd Cap Screw

The Graco 113743 Hex HD Cap Screw is an OEM heavy-duty fastener used in key structural assemblies on LineLazer models for secure and reliable mounting.

  • Genuine Graco hardware
  • Used on LineLazer IV 3900 & 5900
  • Ensures proper torque and stability
  • Designed for high-vibration applications

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Graco 113743 — Hex-Head Cap Screw Overview

The Graco 113743 Hex HD Cap Screw is a genuine OEM fastener used in structural and mechanical assemblies on select Graco equipment. Designed for durability and proper load handling, it ensures secure mounting and long-term reliability in high-vibration environments.

Compatible Machines

This OEM screw is confirmed in Graco’s official parts diagrams for the following models:

  • Graco LineLazer IV 3900 – Airless line striper
  • Graco LineLazer IV 5900 – Airless line striper

Note: While this screw may appear in other LineLazer assemblies, these models are officially documented as compatible.

Key Specifications

Part Number 113743
Type Hex-Head Cap Screw
Application Frame, engine mount, and structural fastener assemblies
OEM Quality Ensures proper torque fitment and safety

Why Use This OEM Screw?

  • Provides correct strength and hardness for Graco assemblies
  • Prevents vibration-related loosening compared to generic bolts
  • Matches factory torque requirements for safety and reliability
  • Ensures proper alignment within LineLazer mechanical structures

Installation Tips

  • Always torque to manufacturer specifications
  • Inspect threads before installation to avoid cross-threading
  • Replace damaged or worn screws immediately

Frequently Asked Questions

In the LineLazer IV 3900 and 5900 models, the 113743 Hex HD Cap Screw is used in frame and structural assemblies, helping maintain alignment and stability under operating vibration.

It’s not recommended. OEM screws like the 113743 have specific strength, size, and thread tolerances. Using non-OEM fasteners can cause misalignment, vibration loosening, or premature wear.

According to parts diagrams, multiple 113743 screws are used—typically in sets of four—depending on the specific assembly within the LineLazer IV 3900 or 5900.

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