Bestselling Bulk #4-40 × ⅜″ Phillips Flat-head Thread-cutting Screws — Type F, Black-oxide Steel Bundle [2ThtMVrJ]

Monster Overview:

Sized for electronics chassis, miniature sheet-metal housings and dense hardwood trim, these #4-40 × ⅜″ Phillips Flat-Head Thread-Cutting Screws seat flush while tapping clean threads in a pre-drilled or punched hole. Heat-treated carbon-steel blanks wear a tough black-oxide conversion coat, then a factory dry-wax film for ultra-low, repeatable drive torque.

Monster Features:

• Flush Seating: 82° flat countersunk head leaves surfaces smooth and snag-free.
• Classic Drive: Phillips #0 recess—ideal for precision assembly tools.
• Type F Cutting Point: UNF thread with fluted slot—forms internal threads in 0.020–0.050″ steel sheet or dense hardwood; chips exit cleanly.
• Finish: Black-oxide (oil-sealed) plus factory dry-wax for smooth installation and indoor corrosion protection.
• Material: Heat-treated carbon steel provides high tensile and shear strength.
• Bulk Packaging: Sealed master cartons—ideal for electronics OEMs, appliance lines & HVAC shops.

Monster Specifications:

• Diameter / Thread: #4-40 UNF, Type F cutting point
• Length: ⅜″ (0.375 in.) — fully threaded
• Head Style: 82° flat countersunk, Phillips drive
• Drive Size: Phillips #0
• Material: Heat-treated carbon steel
• Finish: Black-oxide & factory wax-lubed
• Cross-Reference: SAE J476 Type F / IFI 136

More Monster Bolts:

• Browse all Type F thread-cutting screws
• Need thread-formers? Check our PT / Plastite lineup

Order Yours Today & Feel the Monster Bolts Difference!

Every bulk carton ships fast from our U.S. warehouse and is backed by Monster Bolts’ quality guarantee and responsive support.