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125438 — ROTOR,DISC BRAKE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

125438: ROTOR,DISC BRAKE.

The ROTOR,DISC BRAKE is a the manufacturer industrial component. Key specifications include mounting_method: HOLE, operation_method: HYDRAULIC, mounting_hole_quantity: 17, end_item_identification: LOADER,SCOOP TYPE DDE 4/4 W/4 1-1/2 OR 5 CY GP BUCKET W. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-012-5438, 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
125438
NSN: 5310-00-012-5438
NIINs: 000125438, 011357652
FSC: 5310 — Nuts and Washers
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
mounting_methodHOLE
operation_methodHYDRAULIC
mounting_hole_quantity17
end_item_identificationLOADER,SCOOP TYPE DDE 4/4 W/4 1-1/2 OR 5 CY GP BUCKET W
NSN5310-00-012-5438
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 125438 · 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
•
WIDTH ACROSS FLATS: 2.188 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.500 INCHES IN
•
NUT HEIGHT: 1.500 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
NUT STYLE: SLOTTED, HEXAGON
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS2.188 INCHES NOMINAL IN
THREAD SERIESUNF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.500 INCHES IN
NUT HEIGHT1.500 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
NUT STYLESLOTTED, HEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH12
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
771Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 125438?
125438 is a ROTOR,DISC BRAKE.
What parts can replace 125438?
There is 1 known substitute for 125438: 771. Substitute compatibility should be verified for your specific system.
What is the NSN for 125438?
125438 is cataloged in the U.S. Government catalog under NSN 5310-00-012-5438. 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.