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10121372 — WASHER,FINISHING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

10121372: WASHER,FINISHING.

The WASHER,FINISHING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL, recess_angle: 99.0 DEGREES MINIMUM AND 103.0 DEGREES MAXIMUM, hole_diameter: 0.192 INCHES MINIMUM AND 0.222 INCHES MAXIMUM IN, overall_height: 0.099 INCHES NOMINAL IN, recess_diameter: 0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN, outside_diameter: 0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-409-1785, 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
10121372
NSN: 5310-00-409-1785
FSC: 5310 — Nuts and Washers
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialSTEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL
recess_angle99.0 DEGREES MINIMUM AND 103.0 DEGREES MAXIMUM
hole_diameter0.192 INCHES MINIMUM AND 0.222 INCHES MAXIMUM IN
overall_height0.099 INCHES NOMINAL IN
recess_diameter0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
outside_diameter0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN
style_designatorFINISHING
surface_treatmentPASSIVATE OVERALL
material_thickness0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM IN
material_document_and_classificationMIL-S-6721 MIL SPEC ALL MATERIAL RESPONSES OVERALL
surface_treatment_document_and_classificationMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-409-1785
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10121372 · 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-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: FINISHING
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6721 MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
OUTSIDE DIAMETER: 0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM IN
•
RECESS DIAMETER: 0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.099 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORFINISHING
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6721 MIL SPEC ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN
MATERIAL THICKNESS0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM IN
RECESS DIAMETER0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL
HOLE DIAMETER0.192 INCHES MINIMUM AND 0.222 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 10121372?
10121372 is a WASHER,FINISHING.
What is the NSN for 10121372?
10121372 is cataloged in the U.S. Government catalog under NSN 5310-00-409-1785. This indicates validated use in U.S. government and defense supply chains.
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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.