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Technical Data Sheet
PartsTable / COMPONENT / 391109
391109 ✓ 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 CAP,ACTUATOR,SIDE BRACE is a the manufacturer industrial component. Key specifications include corner_shape: SQUARE ALL CORNERS, end_item_identification: OIL PRIMING PUMP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-349-9037, 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
391109
NSN: 4730-00-349-9037
FSC: 4730
CAGE: 00752 — L3HARRIS TECHNOLOGIES, INC. DBA HARRIS CORP DIV ANTENNA PRODUCTS (USA)
SPECIFICATIONS
corner_shapeSQUARE ALL CORNERS
end_item_identificationOIL PRIMING PUMP
NSN4730-00-349-9037
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 391109 · 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: COPPER ALLOY OVERALL
•
NOMINAL THREAD SIZE: 0.125 INCHES FIRST END IN
•
CONNECTION STYLE: BARBED OR BEADED (HOSE) SECOND END
•
CONNECTION TYPE: UNTHREADED EXTERNAL HOSE SECOND END
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.125 INCHES FIRST END IN
•
NOMINAL OVERALL LENGTH: 1.000 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY OVERALL
NOMINAL THREAD SIZE0.125 INCHES FIRST END IN
CONNECTION STYLEBARBED OR BEADED (HOSE) SECOND END
CONNECTION STYLEPLAIN (PIPE) FIRST END
CONNECTION TYPEUNTHREADED EXTERNAL HOSE SECOND END
NOMINAL PIPE SIZE ACCOMMODATED0.125 INCHES FIRST END IN
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
NOMINAL OVERALL LENGTH1.000 INCHES IN
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.188 INCHES SECOND END IN
SURFACE TREATMENTCADMIUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
A339Interchangeable
interchangeable cross-reference
interchangeable
321GXInterchangeable
interchangeable cross-reference
interchangeable
18843FXInterchangeable
interchangeable cross-reference
interchangeable
118757Interchangeable
interchangeable cross-reference
interchangeable
BP4391Interchangeable
interchangeable cross-reference
interchangeable
617-1325-002Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 391109?
391109 is a CAP,ACTUATOR,SIDE BRACE.
What parts can replace 391109?
There are 16 known substitutes for 391109: A339, 321GX, 18843FX and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 391109?
391109 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-349-9037. 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