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9053813 — WASHER,CONCAVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

9053813: WASHER,CONCAVE.

The WASHER,CONCAVE is a the manufacturer industrial component. Key specifications include radius: 0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN, material: STEEL COMP 1117 OVERALL, hole_diameter: 0.196 INCHES NOMINAL IN, recess_diameter: 0.395 INCHES NOMINAL IN, outside_diameter: 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN, style_designator: CONCAVE. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-682-5866, 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
9053813
NSN: 5310-00-682-5866
FSC: 5310 — Nuts and Washers
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
radius0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
materialSTEEL COMP 1117 OVERALL
hole_diameter0.196 INCHES NOMINAL IN
recess_diameter0.395 INCHES NOMINAL IN
outside_diameter0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
style_designatorCONCAVE
material_thickness0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-682-5866
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 9053813 · 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
•
RADIUS: 0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: CONCAVE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
•
RECESS DIAMETER: 0.395 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1117 OVERALL
•
HOLE DIAMETER: 0.196 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
RADIUS0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
STYLE DESIGNATORCONCAVE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
MATERIAL THICKNESS0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
RECESS DIAMETER0.395 INCHES NOMINAL IN
MATERIALSTEEL COMP 1117 OVERALL
HOLE DIAMETER0.196 INCHES NOMINAL 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9053813?
9053813 is a WASHER,CONCAVE.
What is the NSN for 9053813?
9053813 is cataloged in the U.S. Government catalog under NSN 5310-00-682-5866. 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.