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31844-4D-16W — NIPPLE,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

31844-4D-16W: NIPPLE,TUBE.

The NIPPLE,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, seat_angle: 37.000 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: FLARED (TUBE) ALL ENDS, special_features: COLOR YELLOW; PRESSED IN.FIT RESTRICTOR 0.220 IN,DIA,0.250 IN. LG; CHAMFER ON ONE END 45 DEG IN.

This part is cataloged in the U.S. Government catalog under NSN 4730-00-906-0529, 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
31844-4D-16W
NSN: 4730-00-906-0529
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 14397 — FABER ENTERPRISES, INC. DIV FABER ENTERPRISE INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
seat_angle37.000 DEGREES ALL ENDS
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARED (TUBE) ALL ENDS
special_featuresCOLOR YELLOW; PRESSED IN.FIT RESTRICTOR 0.220 IN,DIA,0.250 IN. LG; CHAMFER ON ONE END 45 DEG IN
style_designatorFLARED W/ CENTER WRENCHING FACILITY
surface_treatmentANODIZE OVERALL
nominal_thread_size0.437 INCHES ALL ENDS IN
nominal_overall_length1.225 INCHES IN
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
reduced_passage_nominal_inside_diameter0.062 INCHES ALL ENDS IN
NSN4730-00-906-0529
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 31844-4D-16W · 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: FLARED (TUBE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.225 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
STYLE DESIGNATOR: FLARED W/ CENTER WRENCHING FACILITY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
REDUCED PASSAGE NOMINAL INSIDE DIAMETER: 0.062 INCHES ALL ENDS IN
•
NOMINAL THREAD SIZE: 0.437 INCHES ALL ENDS IN
•
SEAT ANGLE: 37.000 DEGREES ALL ENDS
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARED (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH1.225 INCHES IN
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
STYLE DESIGNATORFLARED W/ CENTER WRENCHING FACILITY
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
REDUCED PASSAGE NOMINAL INSIDE DIAMETER0.062 INCHES ALL ENDS IN
NOMINAL THREAD SIZE0.437 INCHES ALL ENDS IN
SEAT ANGLE37.000 DEGREES ALL ENDS
SPECIAL FEATURESCOLOR YELLOW; PRESSED IN.FIT RESTRICTOR 0.220 IN,DIA,0.250 IN. LG; CHAMFER ON ONE END 45 DEG IN
SURFACE TREATMENTANODIZE 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 1
SS49PA815-4D16WSame 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 31844-4D-16W?
31844-4D-16W is a NIPPLE,TUBE.
What parts can replace 31844-4D-16W?
There is 1 known substitute for 31844-4D-16W: SS49PA815-4D16W. Substitute compatibility should be verified for your specific system.
What is the NSN for 31844-4D-16W?
31844-4D-16W is cataloged in the U.S. Government catalog under NSN 4730-00-906-0529. 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.