PartsTable
Technical Data Sheet
B10644 ✓ 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

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include material: ALUMINUM ALLOY OVERALL, reducer_type: CONCENTRIC, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL BOSS FIRST END, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END, surface_treatment: ANODIZE OUTSIDE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-574-6629, 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
B10644
NSN: 4730-00-574-6629
FSC: 4730
CAGE: 78710 — TRIUMPH CONTROLS, LLC DBA TRIUMPH CONTROLS, LLC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
reducer_typeCONCENTRIC
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL BOSS FIRST END
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END
surface_treatmentANODIZE OUTSIDE
nominal_thread_size0.500 INCHES SECOND END IN
seat_nominal_radius0.062 INCHES SECOND END IN
nominal_overall_length1.000 INCHES IN
thread_series_designatorUNF ALL ENDS
nominal_outside_diameter_tube_accommodated0.312 INCHES SECOND END IN
surface_treatment_document_and_classificationMIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE
NSN4730-00-574-6629
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: B10644 · 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: ALUMINUM ALLOY OVERALL
NOMINAL THREAD SIZE: 0.500 INCHES SECOND END IN
SEAT NOMINAL RADIUS: 0.062 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.312 INCHES SECOND END IN
REDUCER TYPE: CONCENTRIC
THREAD SERIES DESIGNATOR: UNF ALL ENDS
THREAD CLASS: 2A ALL ENDS A
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALALUMINUM ALLOY OVERALL
NOMINAL THREAD SIZE0.500 INCHES SECOND END IN
SEAT NOMINAL RADIUS0.062 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.312 INCHES SECOND END IN
REDUCER TYPECONCENTRIC
THREAD SERIES DESIGNATORUNF ALL ENDS
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
THREAD CLASS2A ALL ENDS A
CONNECTION TYPETHREADED EXTERNAL BOSS FIRST END
CONNECTION STYLECOMPRESSION (TUBE) SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
27379AInterchangeable
interchangeable cross-reference
interchangeable
10644Interchangeable
interchangeable cross-reference
interchangeable
2157388G1Interchangeable
interchangeable cross-reference
interchangeable
2157388Interchangeable
interchangeable cross-reference
interchangeable
JA1N140P254UAInterchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-94/5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B10644?
B10644 is a RESISTOR,VARIABLE,NONWIRE WOUND,.
What parts can replace B10644?
There are 17 known substitutes for B10644: 27379A, 10644, 2157388G1 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B10644?
B10644 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-574-6629. This indicates validated use in U.S. government and defense supply chains.
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