The 2-520184-4 series of Ultra-Fast Fully Insulated FASTON Receptacle and Tab offers the advantage of a completely protected terminal and a wire crimp with comparable electromechanical performance to open barrel “F” crimp FASTON Terminals. The “User-Friendly” design combines easy mating with rounded corners. The .187 and .250 series receptacles incorporate a two-stage roll configuration and a cantilever mounted dimple which provides easy insertion and multiple independent points of contact for reduced tab interface resistance. Ultra-Fast Fully Insulated FASTON Receptacles, Flag Receptacles and Tabs preclude the need for costly electrical safety interlocks or special protective shields to help prevent shock hazards. In addition, electrical short circuits from exposed leads are eliminated, even in equipment requiring close contact spacing.

Positive entry and lead-in of the tab is provided by the inner housing wall and the lead-in on the terminal rolls. This permits positive engagement, even in blind mating locations. The Ultra-Fast FASTON Tab housing completely encloses a tin-plated copper alloy FASTON tab. The FASTON tab is recessed sufficiently within the housing to allow its use in 600-volt applications. The housing is designed to completely encapsulate the tab and receptacle when the two are mated.


  • Terminal Type = Receptacle
  • Proprietary Name = Ultra-Fast
  • Receptacle Style = Straight
  • Mating Area Interface Dimensions (mm [in]) = 6.35 x 0.81 [.250 x .032]
  • Material = Phosphor Bronze
  • Insulation Diameter (mm [in]) = 3.43 [.135] Max.
  • Insulation Support = Non-Insulation Support
  • Finish = Tin
  • Wire Range (mm [AWG]) = 0.30-0.90² [22-18]
  • Fully Insulated = Yes
  • RoHS/ELV Compliance = RoHS compliant, ELV compliant
  • Lead Free Solder Processes = Not relevant for lead free process
  • RoHS/ELV Compliance History = Always was RoHS compliant

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Mfr Part#: 2-520184-4
Available In: BAG

Ultra Fast 22-18 AWG Straight Fully Insulated Receptacle Assembly


Technical Specifications:

Size: Style: Type: Wire Gauge:
Tab 0.250" x 0.032" Fully Insulated Receptacle AWG 22-18
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$0.2700 USD (each)
50 - 249 $0.2700
250 - 499 $0.2300 (Save 15%)
500 - 2999 $0.2200 (Save 19%)
3000+ $0.2150 (Save 20%)

Other quantities & packages (Reels) may also be available


Qty in Stock   : 2,000
Reserve Stock:
Factory Stock: N/A
Factory Lead-Time: N/A
Min. Order Qty: 50
Multiple of: 1
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