{"title":"One Way Screws","description":"\u003ch2\u003eOne-Way \/ Anti-Theft Screw Quick Reference\u003c\/h2\u003e\n\u003cp\u003eOne-way screws are tamper-resistant fasteners — driven in with a standard slotted screwdriver but designed so conventional tools can't remove them. The asymmetric drive recess engages in the drive direction only, slipping on reverse rotation. Used for security applications: panel covers, electrical enclosures, signage, access plates, public infrastructure. Removal requires either a dedicated one-way bit or destructive methods.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eScrew Type\u003c\/th\u003e\n\u003cth\u003eCommon Sizes\u003c\/th\u003e\n\u003cth\u003eDrive Method\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOne-Way Pan Head\u003c\/td\u003e\n\u003ctd\u003eM3, M4, M5, M6 × various lengths\u003c\/td\u003e\n\u003ctd\u003eSlotted (one-way recess) — drives in but slips on reverse\u003c\/td\u003e\n\u003ctd\u003eMachine panels, electrical enclosures, equipment covers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOne-Way Self-Tapping\u003c\/td\u003e\n\u003ctd\u003e10G × 3\/4\" (Champion NPS7), 8G × 1\/2\"\u003c\/td\u003e\n\u003ctd\u003eSlotted self-tap into sheet metal\u003c\/td\u003e\n\u003ctd\u003eSheet metal panels, signs, access covers, light security mounts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSnake Eye \/ Spanner Drive\u003c\/td\u003e\n\u003ctd\u003eM3, M4, M5, M6, M8 × various\u003c\/td\u003e\n\u003ctd\u003eTwo-pin spanner — non-standard tool required\u003c\/td\u003e\n\u003ctd\u003eHigher security than slot one-way — vandalism resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Hex (Tamper-Proof Hex)\u003c\/td\u003e\n\u003ctd\u003eM3, M4, M5, M6, M8\u003c\/td\u003e\n\u003ctd\u003eHex with centre pin — needs pin-hex bit\u003c\/td\u003e\n\u003ctd\u003eCommon tamper-resistant — security cameras, equipment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Torx (Tamper-Proof Star)\u003c\/td\u003e\n\u003ctd\u003eT10, T15, T20, T25, T30, T40\u003c\/td\u003e\n\u003ctd\u003eTorx with centre pin — needs pin-torx bit\u003c\/td\u003e\n\u003ctd\u003eHigher security applications, electronic device assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBreakaway \/ Shear-Off\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eDrives in normally; bolt head shears off when fully tightened\u003c\/td\u003e\n\u003ctd\u003eOne-time install permanent security (signage, anchors)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eSecurity level scale:\u003c\/strong\u003e one-way slot (low — slot can be picked) → snake-eye \/ pin hex (medium) → pin Torx (medium-high) → shear-off (one-time permanent). Match the security level to the threat. For removal, dedicated one-way removal bits + pin-drive bits exist. Companion ranges: \u003ca href=\"\/en-nz\/collections\/security-fasteners\"\u003esecurity fasteners\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/screws\"\u003escrews\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/self-tapping-screws\"\u003eself-tapping screws\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eOne Way \u0026amp; Anti-Theft Screws — Tamper-Resistant Security Fasteners\u003c\/h2\u003e\n\u003cp\u003eOne-way screws are security fasteners engineered to be driven in using a standard slotted screwdriver but cannot be removed using conventional tools. The head geometry — typically a rounded or asymmetric drive recess — allows the driver to engage in the drive direction only, slipping out on the reverse. AIMS Industrial stocks one-way screws from Champion in metric and self-tapping configurations.\u003c\/p\u003e\n\u003ch3\u003eMetric One-Way Screws\u003c\/h3\u003e\n\u003cp\u003eChampion NPS5 M6 × 20 one-way screws are supplied in 50-piece packs. Suitable for machine panels, electrical enclosures and access covers where tamper-resistance is required but ease of installation with a standard tool is desired.\u003c\/p\u003e\n\u003ch3\u003eAnti-Theft Self-Tapping Screws\u003c\/h3\u003e\n\u003cp\u003eChampion NPS7 anti-theft self-tapping screws in 10G × 3\/4\" are supplied in 50-piece packs. Self-tapping variants are suited to sheet metal, plastic and thin-section applications — typical uses include public fixtures, signage mounts and equipment that requires weather-resistant tamper protection.\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eCommon applications for one-way and anti-theft screws include: electrical meter boxes and switchboard covers, public seating and street furniture, access panels on commercial equipment, machinery guarding and covers, and any installation where unauthorised removal must be prevented.\u003c\/p\u003e\n\u003cp\u003eNeed a different size or drive type? \u003ca href=\"\/en-nz\/pages\/contact-us\"\u003eContact our team\u003c\/a\u003e — we may be able to source other configurations.\u003c\/p\u003e\n\u003ch2 id=\"paa\"\u003ePeople Also Ask — One-Way Security Screws\u003c\/h2\u003e\n\u003ch3\u003eQ: What's a one-way screw?\u003c\/h3\u003e\n\u003cp\u003eA one-way screw is a tamper-resistant fastener with a drive head that allows tightening but resists loosening. The drive geometry typically uses curved or sloped ramps that engage a standard slotted screwdriver in one rotation direction (tightening) but slip in the other direction (loosening). Used for: public infrastructure security, retail anti-theft fixtures, licence plate mounting, vehicle anti-theft, and any application where unauthorised removal must be prevented.\u003c\/p\u003e\n\u003ch3\u003eQ: How do you remove one-way screws?\u003c\/h3\u003e\n\u003cp\u003eDifficult by design — that's the security feature. Removal methods: (1) drill out the screw with a drill bit, (2) cut a slot across the head for screwdriver leverage in reverse direction, (3) use specialty one-way screw extractors (rare), (4) destructive removal with screw extractors or chisels. For installations where you might need to remove the screw later: don't use one-way screws. They're permanent or near-permanent fasteners.\u003c\/p\u003e\n\u003ch3\u003eQ: What sizes do one-way screws come in?\u003c\/h3\u003e\n\u003cp\u003eCommon workshop sizes: M4, M5, M6, M8 metric; #6, #8, #10 imperial. Head styles: countersunk, pan, and oval head are most common. Materials: zinc-plated steel (general security), stainless 304\/316 (outdoor and marine), aluminium (lightweight applications). Length range typically 8-50mm. Match to the application (substrate thickness + protrusion required). For workshop kit, common sizes covers most security applications.\u003c\/p\u003e\n\u003ch3\u003eQ: When should I use one-way screws?\u003c\/h3\u003e\n\u003cp\u003ePublic infrastructure where unauthorised access prevention is the primary requirement. Permanent or near-permanent installations where future access isn't anticipated. Applications where the cost of theft outweighs the inconvenience of difficult removal. Don't use where: regular service access is needed, the installation might need to move, the operator may need to replace the fasteners themselves. The one-way design is a permanent commitment.\u003c\/p\u003e\n\u003ch3\u003eQ: Alternative security fasteners?\u003c\/h3\u003e\n\u003cp\u003eIf you might need to remove the screws later but want security: pin-Torx fasteners (require specialty pin-Torx bits but can be removed with the right tool), snake-eye fasteners (two-hole drive — same principle), or breakaway head bolts (snap off at the head, leaving smooth surface that prevents standard tool engagement). For applications requiring authorised removal capability + security: pin-Torx or snake-eye. For permanent: one-way or breakaway. See [Security Fasteners collection](\/collections\/security-fasteners).\u003c\/p\u003e","products":[{"product_id":"champion-nps7-anti-theft-self-tapping-screw-10g-x-3-4-50-pack","title":"Champion NPS7 Anti-Theft Self Tapping Screw 10G x 3\/4\" -  50\/Pack","description":"\u003cdiv style=\"max-width:680px;width:100%;padding:12px 0;font-family:Arial,sans-serif;\"\u003e\n\u003cdiv style=\"display:flex;align-items:flex-start;justify-content:space-between;border-top:1px solid #e0e0e0;border-bottom:1px solid #e0e0e0;padding:16px 0;margin-bottom:24px;\"\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e◆\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eSelf-taps into sheet metal and plastic\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e●\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eChampion service-line stock\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e▲\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003e50 to a pack\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:14px;line-height:1.6;color:#444;margin:0;\"\u003eChampion Anti-Theft Self Tapping Screw 10G x 3\/4\" for fixing into sheet metal, plastic and thin sections without pre-tapping. Champion-made for everyday service work. Comes in packs of 50.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Champion","offers":[{"title":"Default Title","offer_id":49290347643157,"sku":"A0129342","price":16.32,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/champion-nps7-anti-theft-self-tapping-screw-10g-x-34-50pack-7327667.jpg?v=1781518234"},{"product_id":"champion-nps5-m6-x-20-one-way-screw-50-pack","title":"Champion NPS5 M6 x 20 One Way Screw -  50\/Pack","description":"\u003cdiv style=\"max-width:680px;width:100%;padding:12px 0;font-family:Arial,sans-serif;\"\u003e\n\u003cdiv style=\"display:flex;align-items:flex-start;justify-content:space-between;border-top:1px solid #e0e0e0;border-bottom:1px solid #e0e0e0;padding:16px 0;margin-bottom:24px;\"\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e◆\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eBolting and general assembly work\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e●\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eChampion quality, AIMS-supported\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e▲\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eSold in packs of 50\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:14px;line-height:1.6;color:#444;margin:0;\"\u003eThe Champion M6 x 20 One Way Screw is made for general bolting and assembly work. Trade-grade Champion stock, supported by AIMS. Sold 50 to a pack.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Champion","offers":[{"title":"Default Title","offer_id":49290348953877,"sku":"A0129345","price":17.88,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/champion-nps5-m6-x-20-one-way-screw-50pack-9221357.jpg?v=1781518234"}],"url":"https:\/\/aimsindustrial.com.au\/en-nz\/collections\/one-way-screws.oembed","provider":"AIMS Industrial Supplies","version":"1.0","type":"link"}