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313031501 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

313031501: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_class: 3A SECOND END BULKHEAD A, connection_type: THREADED EXTERNAL BOSS ALL ENDS, connection_style: FLARED W/ GASKET SEAL (BOSS) ALL ENDS, style_designator: FLARED W/ BULKHEAD THREAD, surface_treatment: CADMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-366-3726, 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
313031501
NSN: 4730-01-366-3726
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: U0625 — B-N GROUP LTD (GBR)
SPECIFICATIONS
materialSTEEL OVERALL
thread_class3A SECOND END BULKHEAD A
connection_typeTHREADED EXTERNAL BOSS ALL ENDS
connection_styleFLARED W/ GASKET SEAL (BOSS) ALL ENDS
style_designatorFLARED W/ BULKHEAD THREAD
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.875 INCHES FIRST END BULKHEAD IN
nominal_overall_length2.719 INCHES IN
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
specification/standard_data88044-AN832 GOVERNMENT STANDARD
material_document_and_classificationASTM A108 1141 OR 1137 ASSN STD SINGLE MATERIAL RESPONSE OR MIL-S-6758 4130 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN4730-01-366-3726
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 313031501 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: FLARED W/ GASKET SEAL (BOSS) ALL ENDS
•
NOMINAL OVERALL LENGTH: 2.719 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL BOSS ALL ENDS
•
STYLE DESIGNATOR: FLARED W/ BULKHEAD THREAD
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A108 1141 OR 1137 ASSN STD SINGLE MATERIAL RESPONSE OR MIL-S-6758 4130 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD SIZE: 0.875 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLEFLARED W/ GASKET SEAL (BOSS) ALL ENDS
NOMINAL OVERALL LENGTH2.719 INCHES IN
CONNECTION TYPETHREADED EXTERNAL BOSS ALL ENDS
STYLE DESIGNATORFLARED W/ BULKHEAD THREAD
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A108 1141 OR 1137 ASSN STD SINGLE MATERIAL RESPONSE OR MIL-S-6758 4130 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD SIZE0.875 INCHES ALL ENDS IN
NOMINAL THREAD SIZE0.875 INCHES FIRST END BULKHEAD IN
SPECIFICATION/STANDARD DATA88044-AN832 GOVERNMENT STANDARD
SURFACE TREATMENTCADMIUM OVERALL
SUBSTITUTES & CROSS-REFERENCES 4
AS4841Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS5406-10Reference document
Same NSN cross-reference
Reference document — Secondary reference
AN832-10Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-AS4841Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 313031501?
313031501 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 313031501?
There are 4 known substitutes for 313031501: AS4841, AS5406-10, AN832-10 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 313031501?
313031501 is cataloged in the U.S. Government catalog under NSN 4730-01-366-3726. 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.