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8432389 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

8432389: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020 OVERALL, hole_diameter: 2.375 INCHES MINIMUM AND 2.425 INCHES MAXIMUM IN, outside_diameter: 4.250 INCHES NOMINAL IN, style_designator: KEY, surface_treatment: PHOSPHATE OVERALL, material_thickness: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-974-9600, 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
8432389
NSN: 5310-00-974-9600
FSC: 5310 — Nuts and Washers
CAGE: 19204 — ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OVERALL
hole_diameter2.375 INCHES MINIMUM AND 2.425 INCHES MAXIMUM IN
outside_diameter4.250 INCHES NOMINAL IN
style_designatorKEY
surface_treatmentPHOSPHATE OVERALL
material_thickness0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
internal_prebent_key_width0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
internal_prebent_key_length0.130 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_inside_of_prebent_key1.072 INCHES MINIMUM AND 1.128 INCHES MAXIMUM IN
NSN5310-00-974-9600
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8432389 · 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
•
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY: 1.072 INCHES MINIMUM AND 1.128 INCHES MAXIMUM IN
•
INTERNAL PREBENT KEY WIDTH: 0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 4.250 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
INTERNAL PREBENT KEY LENGTH: 0.130 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PHOSPHATE OVERALL
TECHNICAL CHARACTERISTICS
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY1.072 INCHES MINIMUM AND 1.128 INCHES MAXIMUM IN
INTERNAL PREBENT KEY WIDTH0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER4.250 INCHES NOMINAL IN
MATERIAL THICKNESS0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
INTERNAL PREBENT KEY LENGTH0.130 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
SURFACE TREATMENTPHOSPHATE OVERALL
MATERIALSTEEL COMP 1020 OVERALL
HOLE DIAMETER2.375 INCHES MINIMUM AND 2.425 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8432389?
8432389 is a WASHER,KEY.
What is the NSN for 8432389?
8432389 is cataloged in the U.S. Government catalog under NSN 5310-00-974-9600. 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.