5/16-18 x 1/2" SEMS Screws / External Tooth Washer / Unslotted / Hex Washer Head / Steel / Zinc

Product Details

Part Number: 498758 Carton Quantity: 1,000 pcs Carton Weight: 25.75 lbs
5/16-18 x 1/2" SEMS Screws / External Tooth Washer / 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: $602.03 / Carton of 1,000 pcs ($ 0.60203 Each)
3-4 Carton Price: $566.62 / Carton of 1,000 pcs ($ 0.56662 Each)
5+ Carton Price: $535.14 / Carton of 1,000 pcs ($ 0.53514 Each)

Product Specs

  • Part Number: 498758
  • Product Category: SEMS Screws
  • Type / Style: External Tooth LockWasher
  • 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: 5/16"
  • Full / Partial Thread: Full
  • Driver Size: 1/2
  • Material: Steel
  • Finish: Zinc
  • RoHS: On Request
  • full_partial_thread: Full
  • head_height: 0.208 - 0.230
  • width_across_flats: 5/16"

Part # Cross-Reference

  • 3108EW

More About Part Number 498758

These 5/16-18 x 1/2" SEMS Screws feature a Hex Washer Head with an Unslotted Drive and are made from Steel. 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.