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Technical Data Sheet
PartsTable / COMPONENT / 1611X3
1611X3 ✓ 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 LOCKNUT,TUBE FITTING is a the manufacturer industrial component. Key specifications include width: 0.750 INCHES NOMINAL IN, length: 0.750 INCHES NOMINAL IN, material: ELECTROGRAPHITIC, thickness: 0.375 INCHES NOMINAL IN, body_style: RECTANGULAR, style_designator: ONE PIECE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-153-1871, 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
1611X3
NSN: 4730-01-153-1871
FSC: 4730
CAGE: 79470 — DANA CORP WEATHERHEAD DIV (USA)
SPECIFICATIONS
width0.750 INCHES NOMINAL IN
length0.750 INCHES NOMINAL IN
materialELECTROGRAPHITIC
thickness0.375 INCHES NOMINAL IN
body_styleRECTANGULAR
style_designatorONE PIECE
brush_shunt_length3.500 INCHES NOMINAL SINGLE SHUNT IN
contact_face_styleFLAT
terminal_type_and_quantity1 STRAIGHT W/SLOT
material_document_and_classificationUNION CARBIDE CORP,CARBON PRODUCTS DIV GRADE SA-35 MFR REF SINGLE MATERIAL RESPONSE
shunt_insulation_provision_and_quantity1 UNINSULATED
NSN4730-01-153-1871
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1611X3 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
3782Interchangeable
interchangeable cross-reference
interchangeable
12996Interchangeable
interchangeable cross-reference
interchangeable
1F463PC12Interchangeable
interchangeable cross-reference
interchangeable
1F443PC12Interchangeable
interchangeable cross-reference
interchangeable
1F467PC12Interchangeable
interchangeable cross-reference
interchangeable
705310-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1611X3?
1611X3 is a LOCKNUT,TUBE FITTING.
What parts can replace 1611X3?
There are 7 known substitutes for 1611X3: 3782, 12996, 1F463PC12 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1611X3?
1611X3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-153-1871. 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