S-90841A220 6-32 x 1" ASME B18.3 High-Vacuum Cleaned-and-Bagged Vented Socket Head Screws

High-Vacuum Cleaned-and-Bagged Vented Socket Head Screws

0045FA00012 High-Vacuum Cleaned-and-Bagged Vented Socket Head Screws
0045FA00012 High-Vacuum Cleaned-and-Bagged Vented Socket Head Screws

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

Part No.
Part No. 0045FA00012
Equivalent to mcmaster :
90841A220

Basic Information

Screw Features Vented
System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 0.226"
Head Height 0.138"
Socket Head Profile Standard

Dimensions

Length 1"
Vent Diameter 0.04"

Thread Parameters

Thread Type UNC
Thread Size 6-32
Thread Diameter 0.138"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Hex
Drive Size 7/64"

Material & Strength

Material 18-8 Stainless Steel
Hardness Rockwell B70
Tensile Strength 70000 psi
Vacuum Rating High

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
  • Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
  • Precise thread engagement with Class 3A thread fit and UNC coarse threads ensuring secure fastening and vibration resistance
  • Enhanced safety in vacuum systems featuring a vented design with 0.04" vent diameter to prevent pressure buildup
  • High-vacuum compatibility rated for demanding applications where airtight integrity is critical
  • Standardized dimensions per ASME B18.3 for consistent fit and interchangeability in assemblies
  • Easy installation and removal with 7/64" hex drive socket head, minimizing tool slippage and damage

Professional Applications & Engineering Value

Engineered for precision and reliability, these socket head cap screws are crafted from 18-8 stainless steel to withstand corrosive conditions while maintaining structural integrity. The UNC coarse threads and Class 3A thread fit provide excellent engagement in materials, reducing the risk of cross-threading and ensuring stable connections in high-vibration settings. The vented screw design is critical for high-vacuum applications, allowing trapped gases to escape and preventing system failure. Commonly used in aerospace, semiconductor manufacturing, and medical equipment, these fasteners deliver consistent performance where tensile strength and vacuum rating are paramount, supporting long-term operational safety and efficiency.

Specification Summary & Compliance

This 1" socket head cap screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for precise dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental and safety standards. The screw features a right-hand thread direction, fully threaded design, and is manufactured to maintain consistent thread diameter and head dimensions for reliable assembly integration.

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