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1918580 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1918580: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, leg_length: 1.240 INCHES NOMINAL FIRST END IN, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: GASKET SEAL (TUBE) ALL ENDS, special_features: WEAPON SYSTEM ESSENTIAL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-326-3047, 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
1918580
NSN: 4730-01-326-3047
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
leg_length1.240 INCHES NOMINAL FIRST END IN
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleGASKET SEAL (TUBE) ALL ENDS
special_featuresWEAPON SYSTEM ESSENTIAL
style_designatorPLAIN W/ BULKHEAD THREAD
surface_treatmentCADMIUM AND CHROMATE OVERALL
nominal_thread_size0.562 INCHES ALL ENDS IN
nominal_overall_length1.900 INCHES IN
end_item_identificationPALLETIZED LOADING SYSTEM; TRACTOR, RT, ARTICULATED STEERING; SUPPORT EQUIPMENT, C-17A AIRCRAFT A
thread_series_designatorUNF ALL ENDS
NSN4730-01-326-3047
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1918580 · 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
•
FURNISHED ITEMS AND QUANTITY: 2 PREFORMED PACKING AND 1 BULKHEAD NUT
•
CONNECTION STYLE: GASKET SEAL (TUBE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.900 INCHES IN
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
STYLE DESIGNATOR: PLAIN W/ BULKHEAD THREAD
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
LEG LENGTH: 1.240 INCHES NOMINAL FIRST END IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY2 PREFORMED PACKING AND 1 BULKHEAD NUT
CONNECTION STYLEGASKET SEAL (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH1.900 INCHES IN
CRITICALITY CODE JUSTIFICATIONFEAT
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
STYLE DESIGNATORPLAIN W/ BULKHEAD THREAD
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
LEG LENGTH1.240 INCHES NOMINAL FIRST END IN
LEG LENGTH0.660 INCHES NOMINAL SECOND END IN
NOMINAL THREAD SIZE0.562 INCHES FIRST END BULKHEAD IN
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 6
4-4 520601CAReference document
Same NSN cross-reference
Reference document — Design control — primary reference
J1453Reference document
Same NSN cross-reference
Reference document — Secondary reference
4WLO-WLNL-SReference document
Same NSN cross-reference
Reference document — Secondary reference
832-TT-04Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-J1453/3Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
38H1284Same 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
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FREQUENTLY ASKED QUESTIONS
What is 1918580?
1918580 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 1918580?
There are 6 known substitutes for 1918580: 4-4 520601CA, J1453, 4WLO-WLNL-S and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1918580?
1918580 is cataloged in the U.S. Government catalog under NSN 4730-01-326-3047. 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.