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2621-827-05ASSY42 — VENT AND DRAIN ASSEMBLY

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2621-827-05ASSY42: VENT AND DRAIN ASSEMBLY.

The VENT AND DRAIN ASSEMBLY is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4730-01-164-7872, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
2621-827-05ASSY42
NSN: 4730-01-164-7872
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
Part Number2621-827-05ASSY42
NSN4730-01-164-7872
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2621-827-05ASSY42 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: 0.250 IN. IPS BY 0.438 IN.-20UNF-2B; 700 MAX PSI;BODY-COPPER NICKEL,PLUG HEX W/0.062 IN. VENT HOLE DIA; BRASS CHAIN LINK; BRASS SWIVEL; 2 BRONZE CONNECTORS; NYLON ROPE-3 STRAND 1/8DIAX12LG; O-RING BUNA-N IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTION0.250 IN. IPS BY 0.438 IN.-20UNF-2B; 700 MAX PSI;BODY-COPPER NICKEL,PLUG HEX W/0.062 IN. VENT HOLE DIA; BRASS CHAIN LINK; BRASS SWIVEL; 2 BRONZE CONNECTORS; NYLON ROPE-3 STRAND 1/8DIAX12LG; O-RING BUNA-N IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 2
2621-827-05Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
300-4684449F67Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2621-827-05ASSY42?
2621-827-05ASSY42 is a VENT AND DRAIN ASSEMBLY.
What parts can replace 2621-827-05ASSY42?
There are 2 known substitutes for 2621-827-05ASSY42: 2621-827-05, 300-4684449F67. Substitute compatibility should be verified for your specific system.
What is the NSN for 2621-827-05ASSY42?
2621-827-05ASSY42 is cataloged in the U.S. Government catalog under NSN 4730-01-164-7872. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.