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L4801528-003 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

L4801528-003: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024, end_style: 90 DEGREE PARALLEL, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, inside_diameter: 4.040 INCHES MINIMUM AND 4.050 INCHES MAXIMUM IN, major_thickness: 0.100 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-175-1981, 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
L4801528-003
NSN: 5325-01-175-1981
FSC: 5325 — Fastening Devices
CAGE: 43999 — THE BOEING COMPANY DIV LEGACY AM&M (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
end_style90 DEGREE PARALLEL
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
inside_diameter4.040 INCHES MINIMUM AND 4.050 INCHES MAXIMUM IN
major_thickness0.100 INCHES NOMINAL IN
outside_diameter4.540 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
end_item_identificationFUEL CROSSFEED TUBE,MAIN FUEL TANK,B1B ACFT
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-A-225/6, T851 FED SPEC SINGLE MATERIAL RESPONSE
NSN5325-01-175-1981
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: L4801528-003 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
USAGE DESIGN: EXTERNAL
•
END STYLE: 90 DEGREE PARALLEL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6, T851 FED SPEC SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 4.540 INCHES NOMINAL IN
•
MAJOR THICKNESS: 0.100 INCHES NOMINAL IN
•
INSIDE DIAMETER: 4.040 INCHES MINIMUM AND 4.050 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
END STYLE90 DEGREE PARALLEL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6, T851 FED SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER4.540 INCHES NOMINAL IN
MAJOR THICKNESS0.100 INCHES NOMINAL IN
INSIDE DIAMETER4.040 INCHES MINIMUM AND 4.050 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESTRAIGHT GAP
END ITEM IDENTIFICATIONFUEL CROSSFEED TUBE,MAIN FUEL TANK,B1B ACFT
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is L4801528-003?
L4801528-003 is a RING,RETAINING.
What is the NSN for L4801528-003?
L4801528-003 is cataloged in the U.S. Government catalog under NSN 5325-01-175-1981. 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.