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1K4 — FILTER,RADIO FREQUENCY INTERFERE

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

1K4: FILTER,RADIO FREQUENCY INTERFERE.

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include material: STEEL BODY, body_width: 0.880 INCHES NOMINAL IN, leg_length: 0.560 INCHES MAXIMUM IN, body_height: 2.670 INCHES NOMINAL IN, body_length: 2.000 INCHES NOMINAL IN, thread_class: 2B ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-113-4173, 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→ 1K4
NSN: 4730-01-113-4173
NIINs: 011134173, 012003333
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 73992 — TUTHILL CORP HANSEN COUPLING DIV (USA)
SPECIFICATIONS
materialSTEEL BODY
body_width0.880 INCHES NOMINAL IN
leg_length0.560 INCHES MAXIMUM IN
body_height2.670 INCHES NOMINAL IN
body_length2.000 INCHES NOMINAL IN
thread_class2B ALL ENDS
body_materialMETAL
inclosure_typeENCASED
overall_height2.670 INCHES NOMINAL IN
overall_length1.420 INCHES NOMINAL IN
connection_typeEXTERNAL QUICK DISCONNECT ALL ENDS
connection_styleBOSS GASKET SEAL ALL ENDS
NSN4730-01-113-4173
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1K4 · 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
•
CONNECTION STYLE: BOSS GASKET SEAL ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL BOSS FIRST FLUID END CONNECTION
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
QUICK DISCONNECT NOMINAL SIZE: 0.250 INCHES ALL ENDS IN
•
LEG LENGTH: 0.560 INCHES MAXIMUM IN
•
FEATURES PROVIDED: SELF-SEALING
TECHNICAL CHARACTERISTICS
CONNECTION STYLEBOSS GASKET SEAL ALL ENDS
CONNECTION TYPETHREADED INTERNAL BOSS FIRST FLUID END CONNECTION
CONNECTION TYPEEXTERNAL QUICK DISCONNECT ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
OVERALL LENGTH1.420 INCHES NOMINAL IN
QUICK DISCONNECT NOMINAL SIZE0.250 INCHES ALL ENDS IN
LEG LENGTH0.560 INCHES MAXIMUM IN
FEATURES PROVIDEDSELF-SEALING
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
THREAD CLASS2B ALL ENDS
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 1K4?
1K4 is a FILTER,RADIO FREQUENCY INTERFERE. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 1K4?
1K4 is cataloged in the U.S. Government catalog under NSN 4730-01-113-4173. 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.