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211058013 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

211058013: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, thickness: 0.185 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN, hole_diameter: 1.200 INCHES MINIMUM AND 1.220 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES TOP, overall_diameter: 2.608 INCHES MINIMUM AND 2.610 INCHES MAXIMUM IN, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-353-3420, 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
211058013
NSN: 5310-01-353-3420
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
thickness0.185 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
hole_diameter1.200 INCHES MINIMUM AND 1.220 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES TOP
overall_diameter2.608 INCHES MINIMUM AND 2.610 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
outside_left_corner_chamfer_angle45.0 DEGREES NOMINAL
outside_right_corner_chamfer_angle45.0 DEGREES NOMINAL
material_document_and_classificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-353-3420
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 211058013 · 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 TOP
•
OUTSIDE LEFT CORNER CHAMFER ANGLE: 45.0 DEGREES NOMINAL
•
OVERALL DIAMETER: 2.608 INCHES MINIMUM AND 2.610 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE RIGHT CORNER CHAMFER ANGLE: 45.0 DEGREES NOMINAL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 304 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES TOP
OUTSIDE LEFT CORNER CHAMFER ANGLE45.0 DEGREES NOMINAL
OVERALL DIAMETER2.608 INCHES MINIMUM AND 2.610 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE RIGHT CORNER CHAMFER ANGLE45.0 DEGREES NOMINAL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 304 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER1.200 INCHES MINIMUM AND 1.220 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 1
801-6408786 FIND 44Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 211058013?
211058013 is a WASHER,FLAT.
What parts can replace 211058013?
There is 1 known substitute for 211058013: 801-6408786 FIND 44. Substitute compatibility should be verified for your specific system.
What is the NSN for 211058013?
211058013 is cataloged in the U.S. Government catalog under NSN 5310-01-353-3420. 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.