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MS9768-12 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS9768-12: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, thickness: 0.112 INCHES NOMINAL IN, hole_diameter: 0.378 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN, overall_diameter: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-059-5228, 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
MS9768-12
NSN: 5310-00-059-5228
NIINs: 000595228, 014973959
FSC: 5310 — Nuts and Washers
CAGE: A0170 — LEONARDO SPA AERONAUTICS DIVISION - POMIGLIANO D'ARCO SITE (ITA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thickness0.112 INCHES NOMINAL IN
hole_diameter0.378 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN
overall_diameter0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationKC-130J; KC-13J
cross-sectional_shape_styleRECTANGULAR
part_name_assigned_by_controlling_agencyWASHER,AIRCRAFT,MATERIAL
NSN5310-00-059-5228
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS9768-12 · 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 FINISH: 63.0 MICROINCHES BOTTOM
•
TOP RECESS DIAMETER: 0.435 INCHES NOMINAL IN
•
BOTTOM RECESS DIAMETER: 0.435 INCHES NOMINAL IN
•
HARDNESS RATING: 29.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
•
TOP RECESS ANGLE: 90.000 DEGREES NOMINAL
•
STYLE DESIGNATOR: RECESSED BOTH SIDES
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5525 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5518 ASSN STD 2ND MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES BOTTOM
SURFACE FINISH63.0 MICROINCHES TOP
TOP RECESS DIAMETER0.435 INCHES NOMINAL IN
BOTTOM RECESS DIAMETER0.435 INCHES NOMINAL IN
HARDNESS RATING29.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
TOP RECESS ANGLE90.000 DEGREES NOMINAL
STYLE DESIGNATORRECESSED BOTH SIDES
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5525 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5518 ASSN STD 2ND MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
MATERIAL THICKNESS0.107 INCHES MINIMUM AND 0.117 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
5310PL0712488Reference document
Same NSN cross-reference
Reference document — Informative reference only
10437719Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 MS9768-12?
MS9768-12 is a WASHER,FLAT.
What parts can replace MS9768-12?
There are 2 known substitutes for MS9768-12: 5310PL0712488, 10437719. Substitute compatibility should be verified for your specific system.
What is the NSN for MS9768-12?
MS9768-12 is cataloged in the U.S. Government catalog under NSN 5310-00-059-5228. 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.