Grey Pneumatic 1140TT 3/8" Drive TT40 Tamper-Proof Star Impact Bit Socket, Standard-Length

Grey Pneumatic 1140TT 3/8" Drive TT40 Tamper-Proof Star Impact Bit Socket, Standard-Length

• The Grey Pneumatic 1140TT (part number 1140TT) is a 3/8 in drive, TT40 tamper-proof Torx impact bit socket, standard-length, designed for secure fastening with impact tools in professional automotive, industrial, and maintenance environments.
• Features:
  • Machined from chrome-molybdenum alloy steel with heat treatment to ensure high strength and durability under rugged use.
  • Black oxide coating delivers corrosion resistance and long-lasting protection.
  • Tamper-proof TT40 internal star design helps prevent unauthorized removal and provides precise engagement.
  • Packaged in a poly bag with barcode for easy identification and inventory control.
• Specifications:
  • Impact Driver
  • Type Standard Length, Star, Tamperproof
  • Bit Size TT40
  • Drive End Size 3/8 Inch
  • Overall Length 1.97 Inch
  • Outside Diameter 0.75 Inch
  • Material Chrome-Molybdenum Alloy Steel
  • Packaging Type Poly Bag with Barcode
  • Order Part Number: GP1140TT
  • Item Description: 3/8 Inch Drive x TT40 Standard Length Impact Driver, Tamper Proof
  • Manufacturer: Grey Pneumatic Corp
  • Country of Origin: TW
  • Harmonization Code: 82042000
  • Default Selling Unit: EA
• The 1140TT may also be referred to as 3/8 in impact bit socket TT40, tamper-proof Torx impact socket, Grey Pneumatic Torx bit socket, internal Torx impact socket, and GP 1140TT star driver.

Grey Pneumatic’s 1140TT impact bit socket combines robust alloy construction and a secured tamper-proof design with impact-rated durability—perfect for fast, reliable fastening without compromise.

Q: What is the advantage of the tamper-proof TT40 design?
A: The tamper-proof internal star (TT40) helps prevent unauthorized removal, making it ideal for secure fasteners in critical or sensitive applications.

Q: Is the 1140TT suited for tough environments?
A: Yes. It’s made from heat-treated chrome-molybdenum steel and coated in black oxide for outstanding durability and corrosion resistance in demanding settings.