SMC Aluminum Locking D - NFPA - Red

SMC Aluminum Locking D - NFPA - Red
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SMC Aluminum Locking D - NFPA - Red

Without question this is the most popular of all the aluminum carabiners manufactured by SMC. With a timeless design, the SMC NFPA Aluminum Locking D is widely accepted as the de facto standard for mountain and urban rescue applications as well as by an ever-increasing number of work-safety and industrial users. All this is due in part to its high strength, light weight, wide gate opening and functional versatility. Note that the nut of the locking sleeve engages on the gate, not on the carabiner frame, this helps prevent jamming or vibrating loose a benefit not to be overlooked.

Precision craftsmanship and careful attention to detail make these the finest aluminum carabiners you can buy. Sharp edges resulting from machining operations have been heavily radiused to help protect rope and webbing from abrasion. All critical diminsions are held to close tolerances and detailed inspection procedures are carried out during all production operations. Frames have been slightly flattened to improve strength and are shaped in such a way that the gate may be opened under body weight. Every carabiner that leaves SMC's factory has been individually hand inspected for smooth gate action and other functional characteristics.

All SMC NFPA products are stamped with the required certification information and the user information is enclosed with each item as required by NFPA. Rated NPFA “L” Light Use - Certified by Underwriter’s Laboratories to exceed the NFPA 1983 (2006 edition) “L” - Light Use requirement of 27kN.


  • SMC Part #: NFPA18505
  • Material: High Quality Aluminum
  • Finish: Red Anodized
  • Dimensions: 4.37'' x 2.56''
  • Gate opening: .82”
  • Weight: 2.6 oz (74g)
  • Major axis strength – 27kN
  • Minor axis strength – 7kN
  • Gate open strength – 7kN