5/16-18 x 1/2" Type 1 Thread Cutting Screws / Unslotted / Hex Washer Head / Steel / Zinc

Product Details

Part Number: 266381 Carton Quantity: 2,000 pcs Carton Weight: 40.60 lbs
5/16-18 x 1/2" Type 1 Thread Cutting Screws / Unslotted / Hex Washer Head / Steel / Zinc Please Note: Item in picture may not reflect size and finish of actual part

Technical Specs

Pricing Information

1-2 Carton Price: $536.26 / Carton of 2,000 pcs ($ 0.26813 Each)
3-4 Carton Price: $504.70 / Carton of 2,000 pcs ($ 0.25235 Each)
5+ Carton Price: $476.66 / Carton of 2,000 pcs ($ 0.23833 Each)

Product Specs

  • Part Number: 266381
  • Product Category: Thread Cutting Screws
  • Type / Style: Type 1
  • Size: 5/16-18
  • Length: 1/2"
  • Head Style: Hex Washer Head
  • Drive Style: Unslotted
  • Head Diameter: 1/2
  • Head Height: 0.208 - 0.230
  • Width Across Flats: 1/2"
  • Washer Diameter: 0.624 - 0.676
  • Full / Partial Thread: Full
  • Driver Size: 1/2
  • Material: Steel
  • Finish: Zinc
  • RoHS: On Request
  • driver_size: 1/2
  • head_diameter: 1/2
  • type_style: Type 1
  • width_across_flats: 1/2"

Part # Cross-Reference

  • 31081W

More About Part Number 266381

These 5/16-18 x 1/2" Thread Cutting Screws feature a Hex Washer Head with an Unslotted Drive and are made from Steel. Thread cutting screws create mating threads by cutting into the material during installation, making them useful where a screw must form secure threads in preformed holes. Type 1 thread cutting screws are designed with a single flute for cutting mating threads during installation in preformed holes. They feature a Zinc Finish, which provides reliable corrosion protection for general-purpose indoor and light outdoor applications while remaining a cost-effective choice for everyday fastening needs. The Hex Washer Head incorporates a built-in washer flange beneath the head, increasing bearing surface and improving load distribution while remaining compatible with standard hex drivers. An Unslotted head contains no drive recess, making it useful in permanent or tamper-resistant fastening situations.

⚠ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer.
For more information, go to www.P65Warnings.ca.gov.