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803-7657203ITEM197 — THREAD PIECE,UNION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

803-7657203ITEM197: THREAD PIECE,UNION.

The THREAD PIECE,UNION is a the manufacturer industrial component. Key specifications include material: STEEL, thread_size: 2.1471-11, overall_length: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN, special_features: MATERIAL DOCUMENT ASTM A234, GR-WPB, UN K03006; THREAD LENGTH 0.50 INCH IN, end_connection_type: THREADED, nominal_pipe_size_designation: 1.0 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-598-9855, 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
803-7657203ITEM197
NSN: 4730-01-598-9855
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL
thread_size2.1471-11
overall_length1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
special_featuresMATERIAL DOCUMENT ASTM A234, GR-WPB, UN K03006; THREAD LENGTH 0.50 INCH IN
end_connection_typeTHREADED
nominal_pipe_size_designation1.0 INCHES IN
screw_thread_series_designatorUNS
part_name_assigned_by_controlling_agencyBLANK UNION THREADPIECE
NSN4730-01-598-9855
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 803-7657203ITEM197 · 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 DESIGNATION: 1.0 INCHES IN
•
END CONNECTION TYPE: THREADED
•
THREAD SIZE: 2.1471-11
•
SCREW THREAD SERIES DESIGNATOR: UNS
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE DESIGNATION1.0 INCHES IN
END CONNECTION TYPETHREADED
OVERALL LENGTH1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
THREAD SIZE2.1471-11
SPECIAL FEATURESMATERIAL DOCUMENT ASTM A234, GR-WPB, UN K03006; THREAD LENGTH 0.50 INCH IN
SCREW THREAD SERIES DESIGNATORUNS
PART NAME ASSIGNED BY CONTROLLING AGENCYBLANK UNION THREADPIECE
MATERIALSTEEL
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 803-7657203ITEM197?
803-7657203ITEM197 is a THREAD PIECE,UNION.
What is the NSN for 803-7657203ITEM197?
803-7657203ITEM197 is cataloged in the U.S. Government catalog under NSN 4730-01-598-9855. This indicates validated use in U.S. government and defense supply chains.
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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.