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503-281 — MICROCIRCUIT,DIGITAL

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

503-281: MICROCIRCUIT,DIGITAL.

The MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include material: COPPER FIRST MORTISE, bend_radius: 2.500 INCHES NOMINAL IN, overall_length: 10.167 FEET FT, wall_thickness: 0.188 INCHES NOMINAL IN, working_length: 3.812 INCHES NOMINAL IN, inside_diameter: 1.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4720-00-442-5767, 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
503-281
NSN: 4720-00-442-5767
NIINs: 004425767, 010869412, 014322462
FSC: 4720 — Hose and Flexible Tubing
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
materialCOPPER FIRST MORTISE
bend_radius2.500 INCHES NOMINAL IN
overall_length10.167 FEET FT
wall_thickness0.188 INCHES NOMINAL IN
working_length3.812 INCHES NOMINAL IN
inside_diameter1.500 INCHES NOMINAL IN
first_arm_length2.875 INCHES NOMINAL IN
style_designatorINTERNAL ANGLE AND INTERNAL STRAIGHT CONNECTOR
second_arm_length5.062 INCHES NOMINAL IN
conductor_quantity3
memory_device_typeROM
operating_temp_range-55.0 TO 125.0 CELSIUS DEGC
NSN4720-00-442-5767
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 503-281 · 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
KEY FEATURES
•
STYLE DESIGNATOR: SINGLE BEND
•
WALL THICKNESS: 0.188 INCHES NOMINAL IN
•
INSIDE DIAMETER: 1.500 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC COVER
•
BEND RADIUS: 2.500 INCHES NOMINAL IN
•
SECOND ARM LENGTH: 5.062 INCHES NOMINAL IN
•
WORKING LENGTH: 3.812 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSINGLE BEND
WALL THICKNESS0.188 INCHES NOMINAL IN
INSIDE DIAMETER1.500 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC COVER
MATERIALRUBBER SYNTHETIC OVERALL
BEND RADIUS2.500 INCHES NOMINAL IN
SECOND ARM LENGTH5.062 INCHES NOMINAL IN
WORKING LENGTH3.812 INCHES NOMINAL IN
FIRST ARM LENGTH2.875 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
503A281Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 503-281?
503-281 is a MICROCIRCUIT,DIGITAL.
What parts can replace 503-281?
There is 1 known substitute for 503-281: 503A281. Substitute compatibility should be verified for your specific system.
What is the NSN for 503-281?
503-281 is cataloged in the U.S. Government catalog under NSN 4720-00-442-5767. 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.