S-90550A550 10-24 x 1" ASME B18.3, ASTM F879, MIL-DTL-18240 Venting Stainless Steel Hex-Drive Flat Head Screws

Venting Stainless Steel Hex-Drive Flat Head Screws

0305FA00050 Venting Stainless Steel Hex-Drive Flat Head Screws
0305FA00050 Venting Stainless Steel Hex-Drive Flat Head Screws

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

Part No.
Part No. 0305FA00050
Equivalent to mcmaster :
90550A550

Basic Information

Screw Features Vented
System of Measurement Inch

Head Parameters

Head Type Flat
Head Diameter 0.411"
Head Height 0.127"
Flat Head Profile Standard

Dimensions

Length 1"
Vent Diameter 0.046"

Thread Parameters

Thread Type UNC
Thread Size 10-24
Thread Diameter 0.19"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Hex
Drive Size 1/8"
Countersink Angle 82°

Material & Strength

Material 18-8 Stainless Steel
Hardness Not Rated

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3, ASTM F879, MIL-DTL-18240
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 environments and long-term reliability.
  • Precise, secure fastening ensured by Class 3A thread fit and UNC coarse threads, providing excellent vibration resistance.
  • Efficient installation and removal with a 1/8" hex drive, allowing for high torque application without slippage.
  • Flush, professional finish achieved with a standard 82° flat head profile, suitable for countersunk applications.
  • Prevents pressure buildup through its vented design, making it perfect for sealed or pressurized assemblies.
  • Full-length threading offers maximum grip and holding power along the entire 1" shank length.
  • Compliance with major industrial standards including ASME B18.3, ASTM F879, and MIL-DTL-18240 for guaranteed quality and interoperability.

Professional Applications & Engineering Value

This 10-24 UNC flat head screw is engineered to address critical challenges in industrial assembly, where corrosion resistance, precise fit, and reliability are paramount. The 18-8 stainless steel material provides excellent durability against moisture and chemicals, reducing maintenance needs in applications like machinery, electronic enclosures, and automotive components. Its vented design is particularly valuable in pressurized systems, preventing air or fluid entrapment. The hex drive and coarse UNC threads ensure quick, secure installation with high clamp force, minimizing the risk of loosening under vibration. Fully threaded and with a Class 3A thread fit, it delivers consistent performance in demanding engineering environments, supporting efficient production and long-term operational integrity.

Specification Summary & Compliance

This screw features a 10-24 UNC coarse thread with Class 3A thread fit for high precision. It is fully threaded, 1" in length, with an 82° countersink angle and standard flat head profile. Manufacturing and quality adhere to ASME B18.3, ASTM F879, and MIL-DTL-18240 specifications. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets environmental and safety regulations for industrial use.

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