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Tri-Groove-Drive Tamper-Resistant Nuts
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Tri-groove-drive nuts are narrower than sloped and drilled-spanner-drive nuts to fit in tight spaces. Install with a tri-groove socket and either a socket driver or an open-end wrench (all sold separately). Use them to reduce the risk of unwanted removal for objects in public spaces such as signs, lighting fixtures, and displays.
Zinc—Zinc alloy nuts are lightweight and corrosion resistant in wet environments.
Zinc-Plated Steel—Zinc-plated steel nuts are coated to protect the steel from corrosion in wet environments.
316 Stainless Steel—316 stainless steel nuts won’t corrode from water, chemicals, or salt spray.
Nuts | Tri-Groove Sockets | Socket Drivers | Open-End Wrenches | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Dia. | Ht. | Pkg. Qty. | Pkg. | Each | Each | Each | ||||||
Zinc | |||||||||||||
| M6 × 1 mm | 0.66" | 0.265" | 10 | 90080A304 | 00000 | 7393A37 | 000000 | 5522A77 | 000000 | ——— | 0 | ||
| M8 × 1.25 mm | 0.83" | 0.345" | 10 | 90080A305 | 0000 | 7393A38 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
Zinc-Plated Steel | |||||||||||||
| 10-24 | 0.64" | 0.265" | 25 | 90080A220 | 00000 | 7393A37 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 10-32 | 0.64" | 0.265" | 25 | 90080A230 | 00000 | 7393A37 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 1/4"-20 | 0.64" | 0.265" | 25 | 90080A240 | 00000 | 7393A37 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 5/16"-18 | 0.83" | 0.345" | 25 | 90080A250 | 00000 | 7393A38 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 3/8"-16 | 0.83" | 0.345" | 25 | 90080A260 | 00000 | 7393A38 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
316 Stainless Steel | |||||||||||||
| 10-24 | 0.65" | 0.265" | 10 | 90080A326 | 00000 | 7393A37 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 10-32 | 0.65" | 0.265" | 10 | 90080A327 | 00000 | 7393A37 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 1/4"-20 | 0.66" | 0.265" | 10 | 90080A301 | 00000 | 7393A37 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 1/4"-28 | 0.65" | 0.265" | 10 | 90080A328 | 00000 | 7393A37 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 5/16"-18 | 0.83" | 0.345" | 10 | 90080A302 | 00000 | 7393A38 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 5/16"-24 | 0.83" | 0.35" | 5 | 90080A329 | 00000 | 7393A38 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 3/8"-16 | 0.83" | 0.345" | 10 | 90080A303 | 00000 | 7393A38 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 3/8"-24 | 0.83" | 0.35" | 5 | 90080A331 | 00000 | 7393A38 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 7/16"-14 | 0.83" | 0.34" | 1 | 90080A332 | 0000 | 7393A38 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 1/2"-13 | 0.93" | 0.345" | 1 | 90080A334 | 0000 | 7393A101 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 1/2"-20 | 0.93" | 0.345" | 1 | 90080A335 | 0000 | 7393A101 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| 5/8"-11 | 1.51" | 0.505" | 1 | 90080A336 | 00000 | 7393A43 | 000000 | ——— | 0 | 5414A16 | 000000 | ||
| 5/8"-18 | 1.51" | 0.505" | 1 | 90080A337 | 00000 | 7393A43 | 000000 | ——— | 0 | 5414A16 | 00000 | ||
| 3/4"-10 | 1.51" | 0.505" | 1 | 90080A338 | 00000 | 7393A43 | 000000 | ——— | 0 | 5414A16 | 00000 | ||
| 3/4"-16 | 1.51" | 0.505" | 1 | 90080A339 | 00000 | 7393A43 | 000000 | ——— | 0 | 5414A16 | 00000 | ||
| M5 × 0.8 mm | 0.66" | 0.265" | 5 | 90080A311 | 00000 | 7393A37 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| M6 × 1 mm | 0.66" | 0.265" | 5 | 90080A312 | 00000 | 7393A37 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| M8 × 1 mm | 0.82" | 0.35" | 1 | 90080A314 | 0000 | 7393A38 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| M8 × 1.25 mm | 0.82" | 0.35" | 5 | 90080A313 | 00000 | 7393A38 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| M10 × 1.25 mm | 0.82" | 0.35" | 1 | 90080A316 | 0000 | 7393A38 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| M10 × 1.5 mm | 0.82" | 0.35" | 1 | 90080A315 | 0000 | 7393A38 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| M12 × 1.5 mm | 0.94" | 0.35" | 1 | 90080A318 | 0000 | 7393A101 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| M12 × 1.75 mm | 0.94" | 0.35" | 1 | 90080A317 | 0000 | 7393A101 | 00000 | 5522A77 | 00000 | ——— | 0 | ||
| M16 × 2 mm | 1.51" | 0.505" | 1 | 90080A322 | 00000 | 7393A43 | 000000 | ——— | 0 | 5414A16 | 00000 | ||
Tamper-Resistant Tri-Groove-Drive Steel Round Head Screws
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Good luck trying to force off these screws. The tri-groove drive has a sloped shape with three notches that makes it nearly impossible to grip without a tri-groove driver. They're often found on electrical boxes, machine control panels, and critical equipment where unauthorized access is a concern.
Length is measured from under the head.
Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
Power Tool Bits—Pair these bits with your power tools to turn screws more quickly than manual tools.
Screws | Power Tool Bits | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Head | |||||||||||
Lg. | Dia. | Ht. | Threading | Tensile Strength, psi | Pkg. Qty. | Pkg. | Each | ||||
Zinc-Plated Steel | |||||||||||
6-32 | |||||||||||
| 3/8" | 0.26" | 0.12" | Fully Threaded | 80,000 | 50 | 90058A146 | 000000 | 7309A22 | 000000 | ||
| 1/2" | 0.26" | 0.12" | Fully Threaded | 80,000 | 50 | 90058A148 | 00000 | 7309A22 | 00000 | ||
| 3/4" | 0.26" | 0.12" | Fully Threaded | 80,000 | 50 | 90058A151 | 00000 | 7309A22 | 00000 | ||
8-32 | |||||||||||
| 3/8" | 0.28" | 0.148" | Fully Threaded | 80,000 | 50 | 90058A192 | 00000 | 7309A22 | 00000 | ||
| 1/2" | 0.28" | 0.148" | Fully Threaded | 80,000 | 50 | 90058A194 | 00000 | 7309A22 | 00000 | ||
| 3/4" | 0.28" | 0.148" | Fully Threaded | 80,000 | 50 | 90058A197 | 00000 | 7309A22 | 00000 | ||
| 1" | 0.28" | 0.148" | Fully Threaded | 80,000 | 50 | 90058A199 | 00000 | 7309A22 | 00000 | ||
| 1 1/4" | 0.28" | 0.148" | Fully Threaded | 80,000 | 50 | 90058A201 | 00000 | 7309A22 | 00000 | ||
| 1 1/2" | 0.28" | 0.148" | Fully Threaded | 80,000 | 50 | 90058A203 | 00000 | 7309A22 | 00000 | ||
10-24 | |||||||||||
| 1/2" | 0.375" | 0.15" | Fully Threaded | 80,000 | 50 | 90058A242 | 00000 | 7309A22 | 00000 | ||
| 3/4" | 0.375" | 0.15" | Fully Threaded | 80,000 | 50 | 90058A245 | 00000 | 7309A22 | 00000 | ||
| 1" | 0.375" | 0.15" | Fully Threaded | 80,000 | 25 | 90058A247 | 0000 | 7309A22 | 00000 | ||
| 1 1/2" | 0.375" | 0.15" | Fully Threaded | 80,000 | 25 | 90058A251 | 0000 | 7309A22 | 00000 | ||
10-32 | |||||||||||
| 1/2" | 0.375" | 0.15" | Fully Threaded | 80,000 | 50 | 90058A829 | 00000 | 7309A22 | 00000 | ||
| 3/4" | 0.375" | 0.15" | Fully Threaded | 80,000 | 50 | 90058A831 | 00000 | 7309A22 | 00000 | ||
| 1" | 0.375" | 0.15" | Fully Threaded | 80,000 | 50 | 90058A833 | 00000 | 7309A22 | 00000 | ||
| 1 1/2" | 0.375" | 0.15" | Fully Threaded | 80,000 | 25 | 90058A836 | 0000 | 7309A22 | 00000 | ||
1/4"-20 | |||||||||||
| 1/2" | 0.375" | 0.155" | Fully Threaded | 80,000 | 50 | 90058A538 | 00000 | 7309A23 | 00000 | ||
| 3/4" | 0.375" | 0.155" | Fully Threaded | 80,000 | 50 | 90058A540 | 00000 | 7309A23 | 00000 | ||
| 1" | 0.375" | 0.155" | Fully Threaded | 80,000 | 25 | 90058A542 | 0000 | 7309A23 | 00000 | ||
| 1 1/2" | 0.375" | 0.155" | Fully Threaded | 80,000 | 25 | 90058A546 | 0000 | 7309A23 | 00000 | ||
| 2" | 0.375" | 0.155" | Fully Threaded | 80,000 | 25 | 90058A550 | 00000 | 7309A23 | 00000 | ||
| 2 1/2" | 0.375" | 0.155" | Partially Threaded | 80,000 | 10 | 90058A552 | 0000 | 7309A23 | 00000 | ||
5/16"-18 | |||||||||||
| 5/8" | 0.57" | 0.275" | Fully Threaded | 80,000 | 25 | 90058A580 | 00000 | 7309A24 | 00000 | ||
| 3/4" | 0.57" | 0.275" | Fully Threaded | 80,000 | 25 | 90058A581 | 00000 | 7309A24 | 00000 | ||
| 1" | 0.57" | 0.275" | Fully Threaded | 80,000 | 25 | 90058A583 | 00000 | 7309A24 | 00000 | ||
