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PartsTable / COMPONENT / 40693 ITEM 23
40693 ITEM 23 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The NUT,UNION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, end_item_identification: SEAWOLF CLASS SSN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-435-6353, 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
40693 ITEM 23
NSN: 4730-01-435-6353
FSC: 4730
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
end_item_identificationSEAWOLF CLASS SSN
NSN4730-01-435-6353
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 40693 ITEM 23 · 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
•
MATERIAL: STEEL COMP 304 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 304 OVERALL
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
939WES4Interchangeable
interchangeable cross-reference
interchangeable
5164004-00Interchangeable
interchangeable cross-reference
interchangeable
MS35335-57Interchangeable
interchangeable cross-reference
interchangeable
V100HGInterchangeable
interchangeable cross-reference
interchangeable
1443Interchangeable
interchangeable cross-reference
interchangeable
160400Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40693 ITEM 23?
40693 ITEM 23 is a NUT,UNION.
What parts can replace 40693 ITEM 23?
There are 6 known substitutes for 40693 ITEM 23: 939WES4, 5164004-00, MS35335-57 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40693 ITEM 23?
40693 ITEM 23 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-435-6353. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026