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W4057 — TEE,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

W4057: TEE,TUBE.

The TEE,TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, leg_length: 1.656 INCHES NOMINAL SECOND END IN, connection_type: UNTHREADED INTERNAL TUBE ALL ENDS, connection_style: CRIMPED (TUBE) ALL ENDS, specification/standard_data: 80204-B16.22 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD, nominal_outside_diameter_tube_accommodated: 0.750 INCHES THIRD END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-209-2172, 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
W4057
NSN: 4730-01-209-2172
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 41947 — MUELLER BRASS CO. (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
leg_length1.656 INCHES NOMINAL SECOND END IN
connection_typeUNTHREADED INTERNAL TUBE ALL ENDS
connection_styleCRIMPED (TUBE) ALL ENDS
specification/standard_data80204-B16.22 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
nominal_outside_diameter_tube_accommodated0.750 INCHES THIRD END IN
NSN4730-01-209-2172
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: W4057 · 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
•
CONNECTION STYLE: CRIMPED (TUBE) ALL ENDS
•
CONNECTION TYPE: UNTHREADED INTERNAL TUBE ALL ENDS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.125 INCHES FIRST END IN
•
LEG LENGTH: 1.656 INCHES NOMINAL SECOND END IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLECRIMPED (TUBE) ALL ENDS
CONNECTION TYPEUNTHREADED INTERNAL TUBE ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.125 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES THIRD END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.875 INCHES SECOND END IN
LEG LENGTH1.656 INCHES NOMINAL SECOND END IN
LEG LENGTH1.353 INCHES NOMINAL FIRST END IN
LEG LENGTH1.636 INCHES NOMINAL THIRD END IN
SPECIFICATION/STANDARD DATA80204-B16.22 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
MATERIALCOPPER ALLOY OVERALL
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
B16.22Reference document
Same NSN cross-reference
Reference document — Secondary reference
13211E4043-62Same 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 W4057?
W4057 is a TEE,TUBE.
What parts can replace W4057?
There are 2 known substitutes for W4057: B16.22, 13211E4043-62. Substitute compatibility should be verified for your specific system.
What is the NSN for W4057?
W4057 is cataloged in the U.S. Government catalog under NSN 4730-01-209-2172. 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.