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Technical Data Sheet
PartsTable / COMPONENT / 633-8444 ITEM 20
633-8444 ITEM 20 ✓ 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 CLAMP,HOSE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, inside_diameter: 6.312 INCHES NOMINAL IN, 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 4730-01-415-4940, 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
633-8444 ITEM 20
NSN: 4730-01-415-4940
FSC: 4730
CAGE: 09647 — AQUA-CHEM, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
inside_diameter6.312 INCHES NOMINAL IN
end_item_identificationSEAWOLF CLASS SSN
NSN4730-01-415-4940
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 633-8444 ITEM 20 · 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 316 OVERALL
•
INSIDE DIAMETER: 6.312 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 316 OVERALL
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
INSIDE DIAMETER6.312 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
150143Interchangeable
interchangeable cross-reference
interchangeable
157642Interchangeable
interchangeable cross-reference
interchangeable
DS-B99977-03-8-09-11-RF-09-FF-F-Interchangeable
interchangeable cross-reference
interchangeable
015-07642-000Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 633-8444 ITEM 20?
633-8444 ITEM 20 is a CLAMP,HOSE.
What parts can replace 633-8444 ITEM 20?
There are 4 known substitutes for 633-8444 ITEM 20: 150143, 157642, DS-B99977-03-8-09-11-RF-09-FF-F- and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 633-8444 ITEM 20?
633-8444 ITEM 20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-415-4940. 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