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5310PL1819819 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5310PL1819819: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 301 AND STEEL COMP 316 AND STEEL COMP 302 AND STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL, thickness: 0.022 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN, hole_diameter: 0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN, overall_diameter: 0.495 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN, surface_treatment: OXIDE FILM OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-140-0558, 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
5310PL1819819
NSN: 5310-00-140-0558
FSC: 5310 — Nuts and Washers
CAGE: 9009H — JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX (POL)
SPECIFICATIONS
materialSTEEL COMP 301 AND STEEL COMP 316 AND STEEL COMP 302 AND STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL
thickness0.022 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
hole_diameter0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN
overall_diameter0.495 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
surface_treatmentOXIDE FILM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
nondefinitive_spec/std_dataA TYPE AND 2 GRADE AND B CLASS
material_document_and_classificationMIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-5059 MIL SPEC 3RD MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 4TH MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-140-0558
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5310PL1819819 · 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-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
OVERALL DIAMETER: 0.495 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-5059 MIL SPEC 3RD MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 4TH MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
NONDEFINITIVE SPEC/STD DATA: A TYPE AND 2 GRADE AND B CLASS
•
COLOR: BLACK OVERALL
•
SURFACE TREATMENT: OXIDE FILM OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL DIAMETER0.495 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-5059 MIL SPEC 3RD MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 4TH MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
NONDEFINITIVE SPEC/STD DATAA TYPE AND 2 GRADE AND B CLASS
COLORBLACK OVERALL
SURFACE TREATMENTOXIDE FILM OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 301 AND STEEL COMP 316 AND STEEL COMP 302 AND STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL
CENTER HOLE SHAPE STYLEROUND
SUBSTITUTES & CROSS-REFERENCES 4
663052Reference document
Same NSN cross-reference
Reference document — Secondary reference
FFW92Reference document
Same NSN cross-reference
Reference document — Identification reference
AN960XC416LSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
20364-2Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5310PL1819819?
5310PL1819819 is a WASHER,FLAT.
What parts can replace 5310PL1819819?
There are 4 known substitutes for 5310PL1819819: 663052, FFW92, AN960XC416L and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5310PL1819819?
5310PL1819819 is cataloged in the U.S. Government catalog under NSN 5310-00-140-0558. 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.