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1878503 — FILTER,AIR

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

1878503: FILTER,AIR.

The FILTER,AIR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, special_features: CENTER HOLE ROUND,0.203 IN. DIA IN, style_designator: SQUARE GRIP TYPE, surface_treatment: CADMIUM OVERALL, material_thickness: 0.022 INCHES NOMINAL IN, shoulder_thickness: 0.136 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5310-00-246-1492, 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→ 1878503
NSN: 5310-00-246-1492
NIINs: 002461492, 012319024
FSC: 5310 — Nuts and Washers
CAGE: 1LW55 — BORGWARNER PDS (ANDERSON), L.L.C. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
special_featuresCENTER HOLE ROUND,0.203 IN. DIA IN
style_designatorSQUARE GRIP TYPE
surface_treatmentCADMIUM OVERALL
material_thickness0.022 INCHES NOMINAL IN
shoulder_thickness0.136 INCHES NOMINAL IN
length_across_flats0.472 INCHES NOMINAL IN
general_characteristics_item_descriptionFOAM; 12.000 IN. LG,4.500 IN. WD,0.500 IN. THK IN
NSN5310-00-246-1492
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1878503 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
STYLE DESIGNATOR: SQUARE GRIP TYPE
•
MATERIAL THICKNESS: 0.022 INCHES NOMINAL IN
•
LENGTH ACROSS FLATS: 0.472 INCHES NOMINAL IN
•
SHOULDER THICKNESS: 0.136 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSQUARE GRIP TYPE
MATERIAL THICKNESS0.022 INCHES NOMINAL IN
LENGTH ACROSS FLATS0.472 INCHES NOMINAL IN
SHOULDER THICKNESS0.136 INCHES NOMINAL IN
SPECIAL FEATURESCENTER HOLE ROUND,0.203 IN. DIA IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
DR1878503Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1878503?
1878503 is a FILTER,AIR. It is classified as a MRO (MRO_GENERAL).
What parts can replace 1878503?
There is 1 known substitute for 1878503: DR1878503. Substitute compatibility should be verified for your specific system.
What is the NSN for 1878503?
1878503 is cataloged in the U.S. Government catalog under NSN 5310-00-246-1492. 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.