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1G51686 ✓ 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 REDUCER,PIPE is a the manufacturer industrial component. Key specifications include shaft_type: ROUND, FLATTED SINGLE ACTUATOR, flange_type: CHOKE, flat_height: 0.218 INCHES NOMINAL SINGLE ACTUATOR IN, shaft_length: 0.781 INCHES NOMINAL SINGLE ACTUATOR IN, overall_width: 7.375 INCHES NOMINAL IN, pole_quantity: 1 EACH SECTION FRONT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-629-2813, 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
1G51686
NSN: 4730-01-629-2813
FSC: 4730
CAGE: 49376 — AMEREX CORPORATION DBA GETZ MANUFACTURING DIV AMEREX CORPORATION DBA GETZ MANUFACTURING (USA)
SPECIFICATIONS
shaft_typeROUND, FLATTED SINGLE ACTUATOR
flange_typeCHOKE
flat_height0.218 INCHES NOMINAL SINGLE ACTUATOR IN
shaft_length0.781 INCHES NOMINAL SINGLE ACTUATOR IN
overall_width7.375 INCHES NOMINAL IN
pole_quantity1 EACH SECTION FRONT
terminal_typeTAB, SOLDER LUG
thread_length0.375 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
overall_height2.793 INCHES MINIMUM AND 2.833 INCHES MAXIMUM IN
overall_length15.543 INCHES MINIMUM AND 15.583 INCHES MAXIMUM IN
shaft_diameter0.250 INCHES NOMINAL SINGLE ACTUATOR IN
throw_quantity9 EACH SECTION FRONT
NSN4730-01-629-2813
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1G51686 · 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 11
M16878/4BEE4Interchangeable
interchangeable cross-reference
interchangeable
5854-5Interchangeable
interchangeable cross-reference
interchangeable
041508102419EGEInterchangeable
interchangeable cross-reference
interchangeable
5854Interchangeable
interchangeable cross-reference
interchangeable
51686Interchangeable
interchangeable cross-reference
interchangeable
P5168-7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1G51686?
1G51686 is a REDUCER,PIPE.
What parts can replace 1G51686?
There are 11 known substitutes for 1G51686: M16878/4BEE4, 5854-5, 041508102419EGE and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1G51686?
1G51686 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-629-2813. 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