#4-40 X 1/2" Tamper Resistant Machine Screws | Button Head | Pin-In Six Lobe Drive | 18/8 Stainless Steel (100/Pkg.)

Mutual ScrewSKU: 0408BTMS

Price:
Sale price$34.55per 100( $0.35 each)
Pieces 100
Measurement type Inch
Thread size #4-40
Length 1/2
Material 18/8 Stainless Steel
Grade 18/8
Finish Plain
Drive Pin-In Six Lobe
Head style Button
Threads per inch 40
Weight 1.0 lb

WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to https://www.P65Warnings.ca.gov.

Description

Industrial fasteners engineered for precision assemblies in harsh environments. The Button Head with Pin-In Six Lobe Drive delivers high torque transfer and a compact profile for panel mounting and enclosure applications.

Specs

  • Dimensions: Thread size: #4-40; Length: 1/2 inch (12.7 millimeters)
  • Drive type: Six-lobe (Torx-style) drive
  • Material grade: 304 stainless steel (18/8)
  • Thread type: Unified thread standard

Features

  • Six-lobe drive: Provides high torque transfer, improves tool engagement, and reduces cam-out during automated and manual installation.
  • Material: 304 stainless steel offers excellent corrosion resistance, enabling reliable performance in wash-down, moisture-prone, and outdoor industrial environments.
  • Head design: Button head yields a low-profile, flush seating with even load distribution across the fastening surface, minimizing protrusion in tight assemblies.
  • Use cases: Ideal for electronics enclosures, machine panels, equipment housings, industrial cabinetry, and automotive components requiring durable, corrosion-resistant fasteners.
  • Compatibility and reliability: Suitable for precision assemblies where consistent torque control and repeatable performance are essential in vibration-prone applications.

Can We Help?

If you’re not sure that this product is right for you, give us a call!
800-222-0324

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