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3197840 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3197840: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include thickness: 0.090 INCHES MINIMUM AND 0.105 INCHES MAXIMUM IN, hole_diameter: 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN, overall_diameter: 0.375 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, surface_treatment: ANODIZE OVERALL, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-196-3263, 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
3197840
NSN: 5310-01-196-3263
FSC: 5310 — Nuts and Washers
CAGE: 9P5N5 — MOOG MILITARY AIRCRAFT LLC (USA)
SPECIFICATIONS
thickness0.090 INCHES MINIMUM AND 0.105 INCHES MAXIMUM IN
hole_diameter0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
overall_diameter0.375 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
surface_treatmentANODIZE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
surface_treatment_document_and_classificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-196-3263
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3197840 · 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: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
OVERALL DIAMETER: 0.375 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/1 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/2 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/3 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-225/4 FED SPEC 4TH MATERIAL RESPONSE AND QQ-A-225/5 FED SPEC 5TH MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC 6TH MATERIAL RESPONSE OR QQ-A-225/7 FED SPEC 7TH MATERIAL RESPONSE OR QQ-A-225/8 FED SPEC 8TH MATERIAL RESPONSE OR QQ-A-225/9 FED SPEC 9TH MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: ANODIZE OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: ALUMINUM ALLOY 1100 OR ALUMINUM ALLOY 3003 OR ALUMINUM ALLOY 2011 OR ALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2017 OR ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 5052 OR ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 7075 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL DIAMETER0.375 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/1 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/2 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/3 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-225/4 FED SPEC 4TH MATERIAL RESPONSE AND QQ-A-225/5 FED SPEC 5TH MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC 6TH MATERIAL RESPONSE OR QQ-A-225/7 FED SPEC 7TH MATERIAL RESPONSE OR QQ-A-225/8 FED SPEC 8TH MATERIAL RESPONSE OR QQ-A-225/9 FED SPEC 9TH MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTANODIZE OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALALUMINUM ALLOY 1100 OR ALUMINUM ALLOY 3003 OR ALUMINUM ALLOY 2011 OR ALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2017 OR ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 5052 OR ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 7075 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
THICKNESS0.090 INCHES MINIMUM AND 0.105 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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3197840?
3197840 is a WASHER,FLAT.
What is the NSN for 3197840?
3197840 is cataloged in the U.S. Government catalog under NSN 5310-01-196-3263. 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.