Tamper resistant machine screws feature specialized drive types — spanner, pin-in six lobe, one-way, pin-in hex socket, and tri-groove — that require non-standard tools to remove. Available in a full range of thread sizes from #4-40 through 1/2-13, in 18/8 stainless steel, brass, alloy steel, and zinc plated steel. Common applications include public fixtures, electronics enclosures, transit infrastructure, and access panels.
$72.61per 200(
$0.36 each)
$72.61per 200(
$0.36 each)
$71.36per 200(
$0.36 each)
$61.31per 200(
$0.31 each)
$72.61per 200(
$0.36 each)
$84.70per 200(
$0.42 each)
$72.61per 200(
$0.36 each)
$72.61per 200(
$0.36 each)
$72.61per 200(
$0.36 each)
$72.61per 200(
$0.36 each)
$113.53per 100(
$1.14 each)
5/16-18 X 1-1/2" Tamper Resistant Machine Screws | Tri-Groove Drive | Steel Zinc Plated (100 / Pkg.)
$94.81per 100(
$0.95 each)
5/16-18 X 1-1/4" Tamper Resistant Machine Screws | Tri-Groove Drive | Steel Zinc Plated (100 / Pkg.)
$84.07per 100(
$0.84 each)
$75.02per 100(
$0.75 each)
$67.76per 100(
$0.68 each)
$64.29per 100(
$0.64 each)
$82.67per 100(
$0.83 each)
$50.58per 100(
$0.51 each)
$50.83per 100(
$0.51 each)
$76.74per 200(
$0.38 each)
$74.43per 200(
$0.37 each)
$70.03per 200(
$0.35 each)
$50.27per 100(
$0.50 each)
$89.91per 200(
$0.45 each)
$77.89per 200(
$0.39 each)
$70.33per 200(
$0.35 each)
$65.52per 200(
$0.33 each)
$61.47per 200(
$0.31 each)
$58.09per 200(
$0.29 each)
$50.27per 100(
$0.50 each)
$89.91per 200(
$0.45 each)
$77.89per 200(
$0.39 each)
$64.31per 200(
$0.32 each)
$65.52per 200(
$0.33 each)
$54.15per 200(
$0.27 each)
$51.65per 200(
$0.26 each)
$64.60per 200(
$0.32 each)
$69.66per 200(
$0.35 each)
$58.78per 200(
$0.29 each)
$53.66per 200(
$0.27 each)
$50.61per 200(
$0.25 each)
$94.31per 400(
$0.24 each)
$90.15per 400(
$0.23 each)
$74.82per 400(
$0.19 each)
$92.07per 600(
$0.15 each)
$97.38per 600(
$0.16 each)
$89.75per 800(
$0.11 each)