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Technical Data Sheet
PartsTable / COMPONENT / PT-4
PT-4 ✓ 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 FILTER ELEMENT,FLUID is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING FILTERING MEDIUM, design_type: LIMITED, body_diameter: 0.686 INCHES NOMINAL IN, flow_direction: OUTSIDE IN, style_designator: CYLINDRICAL W/ CONTAINER (RIGID), body_overall_length: 2.525 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-144-2511, 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
PT-4
NSN: 4730-01-144-2511
FSC: 4730
CAGE: 86413 — PAULI AND GRIFFIN CO INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING FILTERING MEDIUM
design_typeLIMITED
body_diameter0.686 INCHES NOMINAL IN
flow_directionOUTSIDE IN
special_featuresCB-STYLE MICROPHONE FOR USE WITH REMOTE SPEAKER STATIONS; DYNAMIC TRANSDUCER; 150 OHMS/2.2K OHMS(DUMMY LOAD) PUSH TO TALK SWITCH; COILED SHIELDED CABLE, 5 FT/1.5 M; 4 PIN CONNECTOR; WGT. 6 OZ OZ
style_designatorCYLINDRICAL W/ CONTAINER (RIGID)
body_overall_length2.525 INCHES NOMINAL IN
body_inside_diameter0.359 INCHES NOMINAL IN
filtering_media_designSINTERED SINGLE FILTERING MEDIA RESPONSE
media_for_which_designedAIR OR GAS
filtration_rating_in_microns25.0 ABSOLUTE
NSN4730-01-144-2511
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: PT-4 · 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
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESTUNGSTEN CARBIDE; 1.781 IN. O/A LG; 0.250 IN. BORE DIA; 0.875 IN. BARREL DIA; 0.740-14 NPT ON ONE END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
8N02Interchangeable
interchangeable cross-reference
interchangeable
711040Interchangeable
interchangeable cross-reference
interchangeable
605510-100Interchangeable
interchangeable cross-reference
interchangeable
715065-101Interchangeable
interchangeable cross-reference
interchangeable
70-1040Interchangeable
interchangeable cross-reference
interchangeable
F 5317Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PT-4?
PT-4 is a FILTER ELEMENT,FLUID.
What parts can replace PT-4?
There are 11 known substitutes for PT-4: 8N02, 711040, 605510-100 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PT-4?
PT-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-144-2511. 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