S-91382A270 Length 0.52" Captive Panel Screws

Captive Panel Screws

0818FA00004 Captive Panel Screws
0818FA00004 Captive Panel Screws

Image may differ from product. See technical specification for details.

Part No.
Part No. 0818FA00004
Equivalent to mcmaster :
91382A270

Basic Information

Captive Panel Screw Type Quarter Turn
Includes Back Press-Fit Nut, Retainer, Screw
System of Measurement Inch

Head Parameters

Head Type Rounded
Head Diameter 3/8"
Head Height 0.09"

Dimensions

Length 0.52"
Shank Diameter 0.198"

Tip & Drive Parameters

Drive Style Slotted

Washer & Nut

Nut Type Press Fit
Nut Diameter 0.54"

Material & Strength

Material Zinc-Plated Steel
Retainer Material 18-8 Stainless Steel

Temperature & Environment

REACH Compliant
RoHS Compliant

Installation & Application

For Inner Panel Hole Diameter 0.437"
For Panel Thickness Min. Inner 0.037"
For Outer Panel Hole Diameter 0.25"
For Min. Space Between Panels 0.01"
For Panel Thickness Total 0.11" to 0.13"
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Quick quarter-turn installation reduces assembly time and labor costs in high-volume production environments
  • Zinc-plated steel construction provides reliable corrosion resistance for extended service life in industrial conditions
  • Integrated press-fit nut system eliminates loose hardware and prevents component loss during maintenance cycles
  • 18-8 stainless steel retainer maintains consistent spring tension for secure panel retention through repeated access cycles
  • Precision dimensional specifications ensure perfect fit with 0.437" inner panel holes and 0.25" outer panel holes
  • Optimized for thin panel applications with 0.11" to 0.13" total thickness compatibility for electronic enclosures and control panels
  • Slotted drive design allows for tool compatibility with standard screwdrivers while preventing over-torque damage

Professional Applications & Engineering Value

This zinc-plated steel captive panel screw system addresses critical challenges in electronic enclosure assembly and industrial panel mounting. The quarter-turn captive panel screw mechanism significantly reduces installation time compared to traditional threaded fasteners, while the press fit nut technology provides permanent mounting points that won't rotate or dislodge during service. The combination of zinc-plated steel for the screw body and 18-8 stainless steel for the retainer creates a durable fastening solution that maintains reliability through frequent panel access for maintenance. Engineered specifically for panel thickness between 0.11" and 0.13", this system eliminates compatibility issues in control panels, communication equipment, and instrumentation enclosures where space optimization is critical.

Specification Summary & Compliance

This captive panel screw system features precision dimensions including 3/8" head diameter, 0.52" length, and compatibility with 0.437" inner panel hole diameter. The assembly includes back press-fit nut, retainer, and screw components. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global markets and restricted substance requirements.

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