Screw Lock Carabiners
Carabiners with locking gates secured by a threaded sleeve. May include a secondary lock such as the side‑gate of the DMM Belay Master.
| Image | Summary | ||||
|---|---|---|---|---|---|
 | 123 (KB10-S) v1 | asymmetric D | manual | nose stopped - boss | japanese 10mm steel screwlock |
 | 123 KB10-S v2 | asymmetric D | manual | nose stopped - boss | japanese 10mm steel screwlock |
 | AustriAlpin (Steel HMS) | HMS | manual | gate stopped - gate stop | unique reverse notch & hole gate, plastic threads |
 | AustriAlpin Sym Oval Clawlock Screwgate v1 | oval | manual | nose stopped - unknown | clawlock nose, nose-stopped locking sleeve |
 | BONAITI (D screwlock) | D | manual | nose stopped - rotational interferance | early screwlocker with unique nose-stop mechanism |
 | BONAITI (Oval Screwlock) | oval | manual | nose stopped - longitudinal interferance | nose-stopped oval screwlock |
 | Beal Be Quick | asymmetric D | manual | gate stopped - unknown | lightweight screwlocker |
 | Black Diamond Mini Pearabiner (v2) | HMS | manual | gate stopped | typical HMS screwgate |
 | Black Diamond Mini Pearabiner v1 | HMS | manual | gate stopped | classic HMS |
 | Black Diamond Mini Pearabiner v1b | HMS | manual | gate stopped | basic HMS |
 | Black Diamond Airlock | HMS | manual | nose stopped | early s-spine HMS |
 | Black Diamond Big D | asymmetric D | manual | hinge stopped | threaded sleeve blocks the hinge rather than nose |
 | Black Diamond Enduro Screwgate | asymmetric D | manual | gate stopped | with quicksilver & positron screwlocks demonstrates evolution of BD compact lockers |
 | Black Diamond GridLock Screwgate | hourglass | manual | gate stopped | iconic belay carabiner with anti-crossloading feature |
 | Black Diamond LiteForge Screwgate | asymmetric D | manual | gate stopped | BD's lightweight screwgate |
 | Black Diamond Oval Keylock Screwgate | oval | manual | gate stopped | lightweight oval |
 | Black Diamond Pearabiner (1990+) | HMS | manual | hinge stopped | threaded sleeve blocks the hinge rather than nose |
 | Black Diamond Positron Screwgate | asymmetric D | manual | gate stopped | with quicksilver screwlocks demonstrates evolution of BD compact lockers |
 | Black Diamond Quicksilver2 screwgate | asymmetric D | manual | gate stopped | with enduro & positron screwlocks demonstrates evolution of BD compact lockers |
 | Black Diamond VaporLock v1 | HMS | manual | gate stopped | ultralight HMS carabiner |
 | Black Diamond VaporLock v2 | HMS | manual | gate stopped | ultralight HMS carabiner |
 | CAMP Clip Screwgate | asymmetric D | manual | gate stopped | budget screwgate |
 | CAMP Photon Lock | asymmetric D | manual | gate stopped - unknown | high-quality lightweight screwlocker |
 | Chouinard Big D 1983 | asymmetric D | manual | gate stopped - thread runout | threaded sleeve blocks the hinge rather than nose |
 | Climb High-USA (D screwlock) | D | manual | gate stopped - thread runout | basic symmetrical d screwlock |
 | Clog (Asymmetric D Screwlock) (2500) | asymmetric D | manual | nose stopped - longitudinal interferance | screwgate with unique lower sleeve stop |
 | Clog (OUTSIDE) | asymmetric D | manual | gate stopped - unknown | older screwlock with gate stops |
 | DMM Belay Master (v1) | HMS | manual | gate stopped | early belay specific carabiner, side-gate anti-crossload |
 | DMM Belay Master v3 | HMS | manual | gate stopped - gate stop | modern version side-gate anti-crossload carabiner |
 | DMM Big Boa Screwlock | HMS | manual | gate stopped - gate stop | large 2000's screwlock |
 | DMM Klettersteig Alloy Anti-Vibe Screwgate | asymmetric D | manual | gate stopped - gate stop | anti-vibration screwlock resists accidental opening |
 | DMM Mamba (Screwgate) | asymmetric D | manual | gate stopped - gate stop | first hot-forged carabiner & captive eye for webbing |
 | DMM Revolver Screwgate v1 | S-spine | manual | gate stopped - gate stop | screwgate version of the original integral pulley carabiner |
 | EIGER USA Locking D | D | manual | gate stopped - gate stop | vintage locking carabiner |
 | Edelrid (HMS) | HMS | manual | gate stopped | basic hot forged HMS |
 | Edelrid Pure Screw Locking | asymmetric D | manual | gate stopped | screwlock version of Pure Slide |
 | Foin D Screwgate | D | manual | nose stopped - longitudinal interferance | prominent nose-stop & lathe-turned lower gate stop |
 | Grivel Plume Nut | asymmetric D | manual | gate stopped - gate stop | ultralight ultracompact screwlocker |
 | Liberty Mountain D | D | manual | gate stopped | basic symmetrical d |
 | Liberty Mountain Steel D Keylock | HMS | manual | gate stopped | typical modern steel screwlock with keylock nose |
 | Mad Rock Gemini | other | manual | gate stopped | unique twin compartment carabiner design with directionally interlocked gates |
 | Mammut Bionic HMS | HMS | manual | gate stopped | early webbed I-beam, hourglass sleeve |
 | Mammut Classic Screwgate | asymmetric D | manual | gate stopped | basic screwgate with milled nose |
 | Mammut Smart HMS v1 | HMS | manual | gate stopped | side gate provides anti-crossload & anti-unlock |
 | Metolius Bravo Locker | asymmetric D | manual | gate stopped | finely threaded sleeve |
 | Metolius Element Locker | HMS | manual | gate stopped | finely threaded sleeve, symmetric HMS |
 | Metolius Gatekeeper Screwlock | asymmetric D | manual | gate stopped | gated captive end, fine threading |
 | Ocun Condor HMS Screw | hourglass | manual | gate stopped - thread runout | internal wiregate hourglass screwlock |
 | Omega (UL Classified D) | D | manual | gate stopped | Full NFPA G rated carabiner - 72 kN |
 | Omega (locking D) | D | manual | nose stopped - longitudinal interferance | basic nose-stopped screwlocking D |
 | Omega 08 | D | manual | gate stopped | half-inch steel barstock D |
 | Omega Pacific Jake Screw-Lok | HMS | manual | nose stopped | classic HMS, offset gate |
 | Omega Pacific Standard Locking D | D | manual | gate stopped | symmetric D |
 | Omega Pacific Standard Oval Locking | oval | manual | gate stopped | overbuilt oval |
 | Petzl Attache 3D Universo | HMS | manual | gate stopped | belay device retainer and prominent gate-stop |
 | Petzl Attache v1 | HMS | manual | gate stopped | iconic HMS design |
 | Petzl Spirit Screw Lock (v2) | asymmetric D | manual | gate stopped | slick, well designed compact locking carabiner |
 | REI (asymmetric D - locking carabiner) | asymmetric D | manual | gate stopped - gate stop | screwlocker with unique extruded aluminum sleeve |
 | REI (locking d) v1 | D | manual | nose stopped | inexpensive locking D from a transitional period of carabiners |
 | REI (locking d) v2 | D | manual | nose stopped | demonstrates changes in ratings and markings over v1 |
 | REI Gold D Locking Carabiner v1 | asymmetric D | manual | gate stopped - thread runout | Green is Go locking indicator |
 | REI Gold D Locking Carabiner v2 | asymmetric D | manual | gate stopped - unknown | Green is Go locking indicator |
 | REI HMS Screwgate | HMS | manual | nose stopped | REI branded carabiner |
 | SMC D Locking v1 | D | manual | nose stopped - longitudinal interferance | vintage screw locker from an era when lockers were a luxury |
 | SMC D Locking v2 | D | manual | other stopped | bi-directional locking due to full length thread |
 | SMC D Locking v3 | D | manual | nose stopped | budget screw locker from an era when lockers were a luxury |
 | Stubai (HMS) | HMS | manual | gate stopped - gate stop | HMS carabiner with a notch & (windowed) hole gate latch |
 | Stubai Asymmetric Type D | asymmetric D | manual | nose stopped - longitudinal interferance | clawlock nose, nose-stopped locking sleeve |
 | Trango React Screwlock | asymmetric D | manual | gate stopped - gate stop | quality budget keylock screwgate |
 | Trango SuperFly Screwlock | asymmetric D | manual | gate stopped - unknown | lightest locker available in 2005 |
 | Unmarked (D screwlock) | D | manual | gate stopped - thread runout | early style screwlocker from an unknown brand |
 | Wild Country EOS | asymmetric D | manual | gate stopped - unknown | modern medium screwlocker with extruded sleeve |
 | Wild Country Neon Screwlock | asymmetric D | manual | gate stopped | an excellent light weight screwlock carabiner |