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B1H6 — PLUNGER,STEAM TRAP

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

B1H6: PLUNGER,STEAM TRAP.

The PLUNGER,STEAM TRAP is a the manufacturer industrial component. Key specifications include end_item_identification: STEAM TRAP,THE TRANE CO MODEL B1, general_characteristics_item_description: STEEL,0.641 IN.LG,ONE END THD MALE,1/4-28 UNF,HEX 0.375 IN.WRENCHING,OTHER END,CONE SHAPE SEATING DEVICE IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-331-9933, 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
B1H6
NSN: 4730-00-331-9933
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 60532 — TRANE U.S. INC. DBA THE TRANE CO DIV TRANE HEADQUARTERS (USA)
SPECIFICATIONS
end_item_identificationSTEAM TRAP,THE TRANE CO MODEL B1
general_characteristics_item_descriptionSTEEL,0.641 IN.LG,ONE END THD MALE,1/4-28 UNF,HEX 0.375 IN.WRENCHING,OTHER END,CONE SHAPE SEATING DEVICE IN
NSN4730-00-331-9933
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: B1H6 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,0.641 IN.LG,ONE END THD MALE,1/4-28 UNF,HEX 0.375 IN.WRENCHING,OTHER END,CONE SHAPE SEATING DEVICE IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,0.641 IN.LG,ONE END THD MALE,1/4-28 UNF,HEX 0.375 IN.WRENCHING,OTHER END,CONE SHAPE SEATING DEVICE IN
END ITEM IDENTIFICATIONSTEAM TRAP,THE TRANE CO MODEL B1
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 1
N400-2135PC4 1-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 B1H6?
B1H6 is a PLUNGER,STEAM TRAP.
What parts can replace B1H6?
There is 1 known substitute for B1H6: N400-2135PC4 1-2. Substitute compatibility should be verified for your specific system.
What is the NSN for B1H6?
B1H6 is cataloged in the U.S. Government catalog under NSN 4730-00-331-9933. 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.