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181912-010 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

181912-010: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: PLASTIC TETRAFLUOROETHYLENE OVERALL, thickness: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN, hole_diameter: 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN, overall_diameter: 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-295-3047, 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
181912-010
NSN: 5310-01-295-3047
FSC: 5310 — Nuts and Washers
CAGE: 09257 — TRELLEBORG SEALING SOLUTIONS US, INC. (USA)
SPECIFICATIONS
materialPLASTIC TETRAFLUOROETHYLENE OVERALL
thickness0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
hole_diameter0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN
overall_diameter1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS 3651 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-295-3047
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 181912-010 · 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
•
OVERALL DIAMETER: 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 3651 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: PLASTIC TETRAFLUOROETHYLENE OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN
•
THICKNESS: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3651 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALPLASTIC TETRAFLUOROETHYLENE OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN
THICKNESS0.052 INCHES MINIMUM AND 0.072 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
1819182-010Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 181912-010?
181912-010 is a WASHER,FLAT.
What parts can replace 181912-010?
There is 1 known substitute for 181912-010: 1819182-010. Substitute compatibility should be verified for your specific system.
What is the NSN for 181912-010?
181912-010 is cataloged in the U.S. Government catalog under NSN 5310-01-295-3047. 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.