Spring-Fast Military: New NASM22529/3 Series

Cage Code: 0HES0


The new Mil Spec NASM22529/3 Series protects wires from chafing and arcing and is specifically designed for flanged holes/penetrations.

  • NASM22529/3 – Opposing castles
  • Added sacrificial abrasion cushion
  • Multi Axis for flanged edges

Key Benefits

  • New NASM22529/3 has multi axis flexibility –perfect for flanged edges, lightening holes & penetrations
  • Superior performance: Spring-Fast outperforms plastic grommets.
  • Snap on installation lowers costs 49% vs. grommets with glue.  Watch the 4 min. video below.
  • Improves efficiency 9.5x – due to fewer steps in workflow.

Grommet Differentiation Table (GDT)

Grommet SeriesCastle GeometryFlexibilityPolymer CoatingExtra Cushion100% TPE EncapsulationHigh HeatMil SpecApplication MethodNotes
NASM22529/3 OpposingMulti-axisYesYes No285°F/140°CYesSnap on/No adhesiveFAA Acceptable
No cure time delay
MS21266 Nylon Opposing2 axisNAYes NA257°F/125°CYesAdhesive Required8-24hr cure time delay
MS21266 Teflon Opposing2 axisNAYes NA527°F/275°CYesAdhesive Required8-24hr cure time delay


Spring-Fast is superior to the old inefficient, costly nylon grommet with glue.

  • NASM22529/3 has 4-axis flexibility to fit flanged holes/penetrations
  • Snaps on in seconds with finger pressure cutting total install costs by 49%
  • Encapsulated steel substrate locks onto the edge with proven retention
  • Multi-axis flexibility fits single/multi-plane applications and small inside/outside radii
  • Chemically resistant to most hydrocarbons, Skydrol immersion, salt spray, shock & vibration resistance
  • Installs continuously and can be used on straight edges, holes and small inside and outside corners
  • Customization available

Spring-Fast Process Benefits

  • Significant reduction in installation steps saving time & money
  • No special handling, training or equipment
  • No toxic adhesives/VOCs – a green solution with no clean-up or Haz-Mat issues
  • No fixturing or waiting for the adhesive to cure
  • No embrittlement of the nylon grommet or adhesive over time

Key Specifications

  • Heat continuous to 185°F (85°C)
  • Low Temperature to -40°F (-40° C)
  • High Corrosion Resistance
  • Superior Dielectric Strength
  • High Shock and Vibration Resistance to rms G 41.7
  • Continuous protection on flanged holes,
  • Corners: 1/8″ (3.2 mm) or greater inside radius and 1/4″ (6.4 mm) or greater outside radius
  • Sheet Thickness 0.02” (.5 mm) to 0.25” (6.4 mm)
  • Available in custom cut lengths & factory pre-cut reels of 25 ft. (7.6 m), 100 ft. (30.5 m) or 500 ft. (152 m)