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451-1773 — ADAPTER,STRAIGHT,PIPE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

451-1773: ADAPTER,STRAIGHT,PIPE TO TUBE.

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020, body_material: STEEL, end_similarity: IDENTICAL, overall_length: 11.750 INCHES NOMINAL IN, first_end_style: INDENTED FLAT KEYWAY, special_features: STEEL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-131-4884, 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
451-1773
NSN: 4730-01-131-4884
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialSTEEL COMP 1020
body_materialSTEEL
step_quantity6
end_similarityIDENTICAL
overall_length11.750 INCHES NOMINAL IN
first_end_styleINDENTED FLAT KEYWAY
special_featuresSTEEL
first_end_diameter1.2480 INCHES NOMINAL IN
external_keyway_length1.750 INCHES NOMINAL FIRST END IN
first_end_keyway_depth0.125 INCHES NOMINAL IN
first_end_keyway_width0.2500 INCHES NOMINAL IN
material_document_and_classificationASTM A108 ASSN STD SINGLE MATERIAL RESPONSE
NSN4730-01-131-4884
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 451-1773 · 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
SUBSTITUTES & CROSS-REFERENCES 2
126628Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
S-1097Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 451-1773?
451-1773 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 451-1773?
There are 2 known substitutes for 451-1773: 126628, S-1097. Substitute compatibility should be verified for your specific system.
What is the NSN for 451-1773?
451-1773 is cataloged in the U.S. Government catalog under NSN 4730-01-131-4884. 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.