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Technical Data Sheet
PartsTable / COMPONENT / 20-280-2
20-280-2 ✓ 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 HEAT EXCHANGER,FLUID TO AIR is a the manufacturer industrial component. Key specifications include height: 0.150 INCHES NOMINAL IN, material: STEEL OVERALL, head_style: FLAT, first_end_style: SQUARE, style_designator: SHOULDER, first_step_length: 1.122 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-202-8792, 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
20-280-2
NSN: 4730-00-202-8792
FSC: 4730
CAGE: 00624 — EATON AEROQUIP LLC DBA JACKSON NORTH 1 DIV FLUID AND ELECTRICAL DISTRIBUTION (USA)
SPECIFICATIONS
height0.150 INCHES NOMINAL IN
materialSTEEL OVERALL
head_styleFLAT
first_end_styleSQUARE
special_featuresHAS 0.257 IN. DIA GROOVE 0.170 IN. W UNDER HEAD; SHOULDER DIA HAS 63.0 MICROINCH FINISH; SECOND STEP HAS 4 EQUAL FLAT SURFACES 0.313 IN. APART IN
style_designatorSHOULDER
first_step_length1.122 INCHES NOMINAL IN
pin_head_diameter0.565 INCHES NOMINAL IN
under_head_length3.460 INCHES NOMINAL IN
second_step_length2.168 INCHES NOMINAL IN
first_step_diameter0.500 INCHES NOMINAL IN
second_step_diameter0.400 INCHES NOMINAL IN
NSN4730-00-202-8792
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 20-280-2 · 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
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT (UNJ) INTERNAL
•
CONNECTION STYLE: PRESSURE SEAL FLARELESS
•
STYLE DESIGNATOR: CAP, TUBE, FLARELESS
•
SEAT NOMINAL RADIUS: 0.0225 INCHES IN
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.750 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1213 OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT (UNJ) INTERNAL
CONNECTION STYLEPRESSURE SEAL FLARELESS
STYLE DESIGNATORCAP, TUBE, FLARELESS
SEAT NOMINAL RADIUS0.0225 INCHES IN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.750 INCHES NOMINAL IN
MATERIALSTEEL COMP 1213 OVERALL
SURFACE TREATMENTCADMIUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD CLASS3B INTERNAL
SPECIFICATION/STANDARD DATA96906-MS21914 GOVERNMENT STANDARD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
20-280-2Interchangeable
interchangeable cross-reference
interchangeable
02104Interchangeable
interchangeable cross-reference
interchangeable
AS21914Interchangeable
Same NIIN cross-reference
interchangeable
AS18280Interchangeable
Same NIIN cross-reference
interchangeable
BACC1412LLInterchangeable
Same NIIN cross-reference
interchangeable
ER21914-12Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20-280-2?
20-280-2 is a HEAT EXCHANGER,FLUID TO AIR.
What parts can replace 20-280-2?
There are 8 known substitutes for 20-280-2: 20-280-2, 02104, AS21914 and 5 more. Substitute compatibility should be verified for your specific system.
Is 20-280-2 still available?
20-280-2 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026