Essential Bulk 5/16″-9 × 1 ¼″ Slotted Indent Hex-washer Head Pt 48-2 Thread-forming Screws – Zinc-plated Steel, Baked & Wax-lubed Series [pv1LfBA2]

Monster Overview:

Tackle heavy-duty plastic assemblies with 5/16″-9 × 1 ¼″ Slotted Indent Hex-Washer Head PT 48-2 Thread-Forming Screws. The forged top slot lets you start or finish by screwdriver if a socket can’t reach, while the captive washer hex head flies through production with a 7/16″ nut-runner. The Plastite-alternative tri-lobular thread cold-flows thermoplastic, cutting chip-free internal threads—no pre-tapping, no cleanup. Heat-treated carbon-steel screws are bright-zinc plated, hydrogen-relief baked, then factory wax-lubed for repeatable low drive torque.

Monster Features:

• Head / Drive: Slotted indent hex-washer (7/16″ AF) — drive by socket or flat blade; slot is inspection-friendly and won’t clog thanks to top indent.
• Captive Washer Face: Spreads load and eliminates the need for a separate washer on plastics.
• PT 48-2 Geometry: Plastite-alt. flank maximises pull-out in ABS, nylon, polycarbonate & more.
• Finish: Bright zinc for corrosion protection, baked for hydrogen relief, dry wax for consistent seating torque.
• Bulk Packaging: Supplied in sealed master cartons—ideal for HVAC, appliance & industrial enclosure lines.

Monster Specifications:

• Diameter: 5/16″ (0.312 in.)
• Thread: PT 48-2 tri-lobular (functional ≈ 9 TPI)
• Length: 1 ¼″ (1.250 in.) – fully threaded
• Head Style: Slotted indent hex-washer (captive washer)
• Drive Size: 7/16″ hex & screwdriver slot
• Material: Heat-treated carbon steel
• Finish: Bright zinc – baked & factory wax-lubed
• Cross-Reference: Plastite^® 48-2 / EJOT PT (non-OEM)

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