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1A325 — PNEUMATIC MUFFLER,EXHAUST-INTAKE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1A325: PNEUMATIC MUFFLER,EXHAUST-INTAKE.

PNEUMATIC MUFFLER,EXHAUST-INTAKE. Key specifications include material: STEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED, body_shape: TAPERED, muffler_design: BAFFLE, overall_length: 1.125 INCHES NOMINAL IN, thread_direction: RIGHT-HAND SINGLE INLET, inlet_thread_size: 0.125 SINGLE INLET. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-586-8654, 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
1A325
NSN: 4730-01-586-8654
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 25795 — W.W. GRAINGER, INC. DIV GOVERNMENT SALES DIVISION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED
body_shapeTAPERED
muffler_designBAFFLE
overall_length1.125 INCHES NOMINAL IN
baffle_quantity1
thread_directionRIGHT-HAND SINGLE INLET
inlet_thread_size0.125 SINGLE INLET
inlet_connection_typeTHREADED SINGLE INLET
end_item_identificationMRAP-MATV
inlet_thread_series_designatorNPT SINGLE INLET
part_name_assigned_by_controlling_agencyEXHAUST,MUFFLER, NPT 1/8 IN, HEX 7/16IN, LENGTH 1 1/8IN IN
NSN4730-01-586-8654
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1A325 · 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
•
BAFFLE QUANTITY: 1
•
MUFFLER DESIGN: BAFFLE
•
INLET CONNECTION TYPE: THREADED SINGLE INLET
•
THREAD DIRECTION: RIGHT-HAND SINGLE INLET
•
BODY SHAPE: TAPERED
•
INLET THREAD SIZE: 0.125 SINGLE INLET
•
INLET THREAD SERIES DESIGNATOR: NPT SINGLE INLET
TECHNICAL CHARACTERISTICS
BAFFLE QUANTITY1
OVERALL LENGTH1.125 INCHES NOMINAL IN
MUFFLER DESIGNBAFFLE
INLET CONNECTION TYPETHREADED SINGLE INLET
THREAD DIRECTIONRIGHT-HAND SINGLE INLET
BODY SHAPETAPERED
INLET THREAD SIZE0.125 SINGLE INLET
INLET THREAD SERIES DESIGNATORNPT SINGLE INLET
PART NAME ASSIGNED BY CONTROLLING AGENCYEXHAUST,MUFFLER, NPT 1/8 IN, HEX 7/16IN, LENGTH 1 1/8IN IN
END ITEM IDENTIFICATIONMRAP-MATV
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1A325?
1A325 is a PNEUMATIC MUFFLER,EXHAUST-INTAKE.
What is the NSN for 1A325?
1A325 is cataloged in the U.S. Government catalog under NSN 4730-01-586-8654. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.