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5190412 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5190412: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, thickness: 0.135 INCHES NOMINAL IN, hole_diameter: 0.328 INCHES NOMINAL IN, overall_diameter: 0.688 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-199-0765, 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
5190412
NSN: 5315-00-199-0765
NIINs: 001990765, 013637950
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thickness0.135 INCHES NOMINAL IN
hole_diameter0.328 INCHES NOMINAL IN
overall_diameter0.688 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5315-00-199-0765
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5190412 · 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
•
STARTING EDGE SHAPE: STRAIGHT
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 3135 OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.500 INCHES NOMINAL IN
STARTING EDGE SHAPESTRAIGHT
STYLE DESIGNATORPLAIN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH2.625 INCHES NOMINAL IN
OVERALL WIDTH0.500 INCHES NOMINAL IN
MATERIALSTEEL COMP 3135 OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
M436Reference document
Same NSN cross-reference
Reference document — Secondary reference
6397389-58Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5190412?
5190412 is a WASHER,FLAT.
What parts can replace 5190412?
There are 2 known substitutes for 5190412: M436, 6397389-58. Substitute compatibility should be verified for your specific system.
What is the NSN for 5190412?
5190412 is cataloged in the U.S. Government catalog under NSN 5315-00-199-0765. 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.