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4978K407 — NIPPLE,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4978K407: NIPPLE,PIPE.

The NIPPLE,PIPE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, connection_type: THREADED EXTERNAL PIPE CARRYING CASE, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: FLARELESS W/ CENTER WRENCHING FACILITY, nominal_overall_length: 1.703 INCHES IN, media_for_which_designed: AIR AND WATER AND OIL LOCATION NOT OTHERWISE SPECIFIED. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-733-9669, 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
4978K407
NSN: 4730-01-733-9669
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
connection_typeTHREADED EXTERNAL PIPE CARRYING CASE
connection_stylePLAIN (PIPE) ALL ENDS
special_featuresPRESSURE CLASS:125;BODY SHAPE:HEXAGON;FOR USE WITH:AIR,DRINKING WATER,NATURAL GAS AND OIL;MAXIMUM OPERATING PRESSURE:200 POUNDS PER SQUARE INCH LBS
style_designatorFLARELESS W/ CENTER WRENCHING FACILITY
nominal_overall_length1.703 INCHES IN
media_for_which_designedAIR AND WATER AND OIL LOCATION NOT OTHERWISE SPECIFIED
thread_series_designatorNPT ALL ENDS
nominal_pipe_size_accommodated0.500 INCHES ALL ENDS IN
part_name_assigned_by_controlling_agencyLOW-PRESSURE PIPE FITTING
pipe_wall_thickness_designation_for_which_designedSCHEDULE 40 ALL ENDS
NSN4730-01-733-9669
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4978K407 · 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
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.500 INCHES ALL ENDS IN
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.703 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL PIPE CARRYING CASE
•
STYLE DESIGNATOR: FLARELESS W/ CENTER WRENCHING FACILITY
•
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNED: SCHEDULE 40 ALL ENDS
•
MEDIA FOR WHICH DESIGNED: AIR AND WATER AND OIL LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES ALL ENDS IN
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
NOMINAL OVERALL LENGTH1.703 INCHES IN
CONNECTION TYPETHREADED EXTERNAL PIPE CARRYING CASE
STYLE DESIGNATORFLARELESS W/ CENTER WRENCHING FACILITY
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNEDSCHEDULE 40 ALL ENDS
SPECIAL FEATURESPRESSURE CLASS:125;BODY SHAPE:HEXAGON;FOR USE WITH:AIR,DRINKING WATER,NATURAL GAS AND OIL;MAXIMUM OPERATING PRESSURE:200 POUNDS PER SQUARE INCH LBS
MEDIA FOR WHICH DESIGNEDAIR AND WATER AND OIL LOCATION NOT OTHERWISE SPECIFIED
PART NAME ASSIGNED BY CONTROLLING AGENCYLOW-PRESSURE PIPE FITTING
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

No substitute or cross-reference records for this part.

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 4978K407?
4978K407 is a NIPPLE,PIPE.
What is the NSN for 4978K407?
4978K407 is cataloged in the U.S. Government catalog under NSN 4730-01-733-9669. 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.