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12759-00462 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12759-00462: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.122 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN, hole_diameter: 0.805 INCHES MINIMUM AND 0.842 INCHES MAXIMUM IN, overall_diameter: 1.993 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN, surface_treatment: ZINC OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-555-5019, 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
12759-00462
NSN: 5310-01-555-5019
FSC: 5310 — Nuts and Washers
CAGE: 0Y3H3 — FASTENAL COMPANY DBA FASTENAL CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.122 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN
hole_diameter0.805 INCHES MINIMUM AND 0.842 INCHES MAXIMUM IN
overall_diameter1.993 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN
surface_treatmentZINC OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationMRAP - UNIQUE NSN - USED ON 4 MRAP VARIANTS; MRAP - COUGAR
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM F436 ASSN STD ALL MATERIAL RESPONSES OVERALL
NSN5310-01-555-5019
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12759-00462 · 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: 1.993 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM F436 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
COLOR: YELLOW OVERALL
•
SURFACE TREATMENT: ZINC OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.993 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM F436 ASSN STD ALL MATERIAL RESPONSES OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
COLORYELLOW OVERALL
SURFACE TREATMENTZINC OVERALL
PERIPHERAL SHAPE STYLEROUND
END ITEM IDENTIFICATIONMRAP - UNIQUE NSN - USED ON 4 MRAP VARIANTS; MRAP - COUGAR
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.805 INCHES MINIMUM AND 0.842 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 4
3011682Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ASME B18.22.1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
ASME B18.21.1Reference document
Same NSN cross-reference
Reference document — Secondary reference
33864Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 12759-00462?
12759-00462 is a WASHER,FLAT.
What parts can replace 12759-00462?
There are 4 known substitutes for 12759-00462: 3011682, ASME B18.22.1, ASME B18.21.1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12759-00462?
12759-00462 is cataloged in the U.S. Government catalog under NSN 5310-01-555-5019. 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.