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HS5321C3 — WASHER,FINISHING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

HS5321C3: WASHER,FINISHING.

The WASHER,FINISHING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, recess_angle: 99.0 DEGREES MINIMUM AND 103.0 DEGREES MAXIMUM, hole_diameter: 0.190 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN, recess_diameter: 0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN, style_designator: FINISHING, material_thickness: 0.003 INCHES MINIMUM AND 0.007 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-485-0770, 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
HS5321C3
NSN: 5310-01-485-0770
FSC: 5310 — Nuts and Washers
CAGE: 10630 — ANILLO INDUSTRIES LLC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
recess_angle99.0 DEGREES MINIMUM AND 103.0 DEGREES MAXIMUM
hole_diameter0.190 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN
recess_diameter0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
style_designatorFINISHING
material_thickness0.003 INCHES MINIMUM AND 0.007 INCHES MAXIMUM IN
material_document_and_classificationMIL-S-6721 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
NSN5310-01-485-0770
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: HS5321C3 · 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
•
STYLE DESIGNATOR: FINISHING
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6721 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
•
MATERIAL THICKNESS: 0.003 INCHES MINIMUM AND 0.007 INCHES MAXIMUM IN
•
RECESS DIAMETER: 0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
HOLE DIAMETER: 0.190 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN
•
RECESS ANGLE: 99.0 DEGREES MINIMUM AND 103.0 DEGREES MAXIMUM
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORFINISHING
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6721 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.003 INCHES MINIMUM AND 0.007 INCHES MAXIMUM IN
RECESS DIAMETER0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
MATERIALSTEEL CORROSION RESISTING OVERALL
HOLE DIAMETER0.190 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN
RECESS ANGLE99.0 DEGREES MINIMUM AND 103.0 DEGREES MAXIMUM
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 HS5321C3?
HS5321C3 is a WASHER,FINISHING.
What is the NSN for HS5321C3?
HS5321C3 is cataloged in the U.S. Government catalog under NSN 5310-01-485-0770. 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.