Bulk 5/16″-9 × 1 ¼″ Slotted Indent Hex-Washer Head PT 48-2 Thread-Forming Screws – Zinc-Plated Steel, Baked & Wax-Lubed


Length: 1000 Qty - 5/16"-9 x 1-1/4"
Price:
Sale price$765.90

Description

MonsterBolts Bulk 5/16-9×1¼ Slotted Hex-Washer PT 48-2 Thread-Forming Screws

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)

More Monster Bolts:

• Need bulk Taptite-style thread-rolling screws?
• Looking for Type 1, 23, 25 & F thread-cutting screws?
Explore our full inch-series lineup.

Order Yours Today & Experience 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.

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