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12252407 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12252407: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, hole_diameter: 0.249 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN, outside_diameter: 0.395 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN, special_features: ID FLATTED 0.202 IN. MIN,0.206 IN.

MAX IN, style_designator: KEY, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S. Government catalog under NSN 5310-01-065-5947, 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
12252407
NSN: 5310-01-065-5947
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
hole_diameter0.249 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
outside_diameter0.395 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
special_featuresID FLATTED 0.202 IN. MIN,0.206 IN. MAX IN
style_designatorKEY
surface_treatmentPASSIVATE OVERALL
material_thickness0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
external_prebent_key_width0.058 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
external_prebent_key_length0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN
overall_distance_including_keys0.465 INCHES NOMINAL IN
material_document_and_classificationQQ-S-766,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-065-5947
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12252407 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY: 0.232 INCHES MINIMUM AND 0.242 INCHES MAXIMUM IN
•
EXTERNAL PREBENT KEY LENGTH: 0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 0.465 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.395 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY0.232 INCHES MINIMUM AND 0.242 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY LENGTH0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS0.465 INCHES NOMINAL IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.395 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
MATERIAL THICKNESS0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
SPECIAL FEATURESID FLATTED 0.202 IN. MIN,0.206 IN. MAX IN
SURFACE TREATMENTPASSIVATE OVERALL
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 12252407?
12252407 is a WASHER,KEY.
What is the NSN for 12252407?
12252407 is cataloged in the U.S. Government catalog under NSN 5310-01-065-5947. 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.