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4548K191 — NIPPLE,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4548K191: NIPPLE,PIPE.

The NIPPLE,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OR STEEL COMP 316L OVERALL, style_designator: CLOSE, end_item_identification: 5340-01-487-7760, media_for_which_designed: STEAM SECOND RESPONSE, part_name_assigned_by_controlling_agency: WELDED PIPE NIPPLE-SCHEDULE 40. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-534-6598, 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
4548K191
NSN: 4730-01-534-6598
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OR STEEL COMP 316L OVERALL
style_designatorCLOSE
end_item_identification5340-01-487-7760
media_for_which_designedSTEAM SECOND RESPONSE
part_name_assigned_by_controlling_agencyWELDED PIPE NIPPLE-SCHEDULE 40
NSN4730-01-534-6598
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4548K191 · 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
•
STYLE DESIGNATOR: CLOSE
•
MEDIA FOR WHICH DESIGNED: WATER-OIL-GAS FIRST RESPONSE
•
MATERIAL: STEEL COMP 316 OR STEEL COMP 316L OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORCLOSE
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SECOND RESPONSE
PART NAME ASSIGNED BY CONTROLLING AGENCYWELDED PIPE NIPPLE-SCHEDULE 40
END ITEM IDENTIFICATION5340-01-487-7760
MATERIALSTEEL COMP 316 OR STEEL COMP 316L 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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4548K191?
4548K191 is a NIPPLE,PIPE.
What is the NSN for 4548K191?
4548K191 is cataloged in the U.S. Government catalog under NSN 4730-01-534-6598. 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.