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Technical Data Sheet
PartsTable / COMPONENT / 4283-121
4283-121 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

HEAT EXCHANGER,AIR TO AIR,AIRCRA. Key specifications include material: GLASS, special_features: 14.400 IN. L APPROX; 8.060 IN.

W APPROX IN, style_designator: CIRCULAR, features_provided: FRAME, material_transparency: CLEAR, supplementary_features: PRIMARY HEAT EXCHANGER. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-738-1303, 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
4283-121
NSN: 4720-00-738-1303
FSC: 4720
CAGE: 24161 — GATES CORPORATION (USA)
SPECIFICATIONS
materialGLASS
special_features14.400 IN. L APPROX; 8.060 IN. W APPROX IN
style_designatorCIRCULAR
features_providedFRAME
material_transparencyCLEAR
supplementary_featuresPRIMARY HEAT EXCHANGER
end_item_identificationF-15E ACFT
NSN4720-00-738-1303
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 4283-121 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
636AS 148-1Interchangeable
interchangeable cross-reference
interchangeable
499-002-107Interchangeable
interchangeable cross-reference
interchangeable
B4-903Interchangeable
interchangeable cross-reference
interchangeable
26-507Interchangeable
interchangeable cross-reference
interchangeable
SCC28016Interchangeable
interchangeable cross-reference
interchangeable
5310002474196Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4283-121?
4283-121 is a HEAT EXCHANGER,AIR TO AIR,AIRCRA.
What parts can replace 4283-121?
There are 27 known substitutes for 4283-121: 636AS 148-1, 499-002-107, B4-903 and 24 more. Substitute compatibility should be verified for your specific system.
Is 4283-121 still available?
4283-121 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