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BIRNS SIZE “P32” Penetrator has 1.25-12-UNF-2A mounting threads, and is available with up to 30 conductors. The standard configuration includes 3m (10′) of neoprene-jacketed cable inboard and outboard, but other cable lengths and materials are available. The outboard cable may be 90º or 180º. Specify other conductor sizes, configurations, or materials.

BIRNS P3286 penetrators have an overall stem length of 86mm (3.4″). The threaded portion is 66mm (2.6″), with an unthreaded portion (above the threads) 20mm (0.8″) long. Specify other stem lengths.

P19 (.75-16) UNF -2A P25 (1.0-14) UNS-2A P32 (1.25-12) UNF -2A P38 (1.50-12) UNF -2A BIRNS UTS (UN) penetrators are constructed of AISI 316 stainless steel, passivated per QQ-P-35 type VI.  All cables are mechanically reinforced with high strength potting compound and seal-overmolded with polyurethane. BIRNS UTS (UN) penetrators meet or exceed ABS and DNV requirements when fabricated with Low Smoke Zero Halogen (LSZH) cables inboard.  All BIRNS penetrators are individually serialized, certified and tested in accordance with BIRNS’ ABS-approved test procedure ETP-6510-101.


BIRNS can customize penetrators to specific requirements, including:
  • Cable length (inboard and outboard)
  • Conductor quantity and size
  • Straight or 90° cable molding
  • Cable jacket material
  • Test methods and witnessing

Specific Customizations:

  • Cable Length (inboard to 18m/60′; outboard to 3m/10′ or on special order to 4.5m/15′)
  • Cable Stock, including conductors quantity and size (See conductor color coding)
  • Wiring of TSP/STP (screened twisted pairs):
    • leave the shields not connected (“floating shields”)
    • “marry” all (or some) of the shields to one or more or more penetrator pins
    • terminate each shield to its own penetrator pin
    • terminate overall shield to Penetrator shell…or isolate it from the shell, as you prefer
  • Straight or 90° cable molding
  • Cable jacket material. We use BIRNS 52D-089 LSZH wire (tails/flying leads) inboard unless otherwise specified. For 52D-089 LSZH wire inboard, add the suffix “-LS” to the part number (e.g. P38100-24-RA-LS)
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