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M161-4 — FILTER,RADIO FREQUENCY INTERFERE

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

M161-4: FILTER,RADIO FREQUENCY INTERFERE.

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include material: CELLULOSE OVERALL, thickness: 0.047 INCHES NOMINAL IN, body_width: 2.875 INCHES NOMINAL IN, body_height: 1.250 INCHES MAXIMUM IN, body_length: 3.062 INCHES NOMINAL IN, body_material: METAL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-247-6879, 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
MRO→ MRO_GENERAL→ M161-4
NSN: 5310-00-247-6879
NIINs: 002476879, 004563435, 013535025
FSC: 5310 — Nuts and Washers
CAGE: 91340 — MET-PRO CORPORATION (USA)
SPECIFICATIONS
materialCELLULOSE OVERALL
thickness0.047 INCHES NOMINAL IN
body_width2.875 INCHES NOMINAL IN
body_height1.250 INCHES MAXIMUM IN
body_length3.062 INCHES NOMINAL IN
body_materialMETAL
hole_diameter0.500 INCHES NOMINAL IN
inclosure_typeHERMETICALLY SEALED
overall_length3.374 INCHES NOMINAL IN
overall_diameter0.688 INCHES NOMINAL IN
special_featuresFOUR FILTERED FUNCTIONS
style_designatorRECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES
NSN5310-00-247-6879
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M161-4 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OVERALL DIAMETER: 0.688 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: CELLULOSE OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.500 INCHES NOMINAL IN
•
THICKNESS: 0.047 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.688 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALCELLULOSE OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.500 INCHES NOMINAL IN
THICKNESS0.047 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
16-14Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M161-4?
M161-4 is a FILTER,RADIO FREQUENCY INTERFERE. It is classified as a MRO (MRO_GENERAL).
What parts can replace M161-4?
There is 1 known substitute for M161-4: 16-14. Substitute compatibility should be verified for your specific system.
What is the NSN for M161-4?
M161-4 is cataloged in the U.S. Government catalog under NSN 5310-00-247-6879. 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.