PartsTable
Technical Data Sheet
Download PDF

4730PL1781256 — NIPPLE,BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4730PL1781256: NIPPLE,BOSS.

The NIPPLE,BOSS is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R54520 OVERALL, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL BOSS ALL ENDS, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS, special_features: FIRST END BULKHEAD,UN,3A CL A, style_designator: LONG W/ OFFSET WRENCHING FACILITY. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-092-8204, 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
4730PL1781256
NSN: 4730-01-092-8204
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 9009H — JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX (POL)
SPECIFICATIONS
materialTITANIUM ALLOY UNS R54520 OVERALL
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL BOSS ALL ENDS
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
special_featuresFIRST END BULKHEAD,UN,3A CL A
style_designatorLONG W/ OFFSET WRENCHING FACILITY
nominal_thread_size0.562 INCHES ALL ENDS IN
nominal_overall_length1.824 INCHES IN
thread_quantity_per_inch20 ALL ENDS
thread_series_designatorUNJS ALL ENDS
material_document_and_classificationAMS4965,6AL-6V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V
NSN4730-01-092-8204
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4730PL1781256 · 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: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.824 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL BOSS ALL ENDS
•
STYLE DESIGNATOR: LONG W/ OFFSET WRENCHING FACILITY
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS4965,6AL-6V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V
•
NOMINAL THREAD SIZE: 0.562 INCHES ALL ENDS IN
•
THREAD CLASS: 3A ALL ENDS A
TECHNICAL CHARACTERISTICS
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
NOMINAL OVERALL LENGTH1.824 INCHES IN
CONNECTION TYPETHREADED EXTERNAL BOSS ALL ENDS
STYLE DESIGNATORLONG W/ OFFSET WRENCHING FACILITY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS4965,6AL-6V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V
NOMINAL THREAD SIZE0.562 INCHES ALL ENDS IN
SPECIAL FEATURESFIRST END BULKHEAD,UN,3A CL A
THREAD CLASS3A ALL ENDS A
THREAD QUANTITY PER INCH20 ALL ENDS
MATERIALTITANIUM ALLOY UNS R54520 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 5
4730PL0641108Reference document
Same NSN cross-reference
Reference document — Informative reference only
AE16684-6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
4730PL2179697Reference document
Same NSN cross-reference
Reference document — Informative reference only
AP431T06Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
C9582-6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 4730PL1781256?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 4730PL1781256?
4730PL1781256 is a NIPPLE,BOSS.
What parts can replace 4730PL1781256?
There are 5 known substitutes for 4730PL1781256: 4730PL0641108, AE16684-6, 4730PL2179697 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4730PL1781256?
4730PL1781256 is cataloged in the U.S. Government catalog under NSN 4730-01-092-8204. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 4730PL1781256

✓ 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.