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3-125-0002-98 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3-125-0002-98: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1025 OVERALL, thickness: 0.059 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN, hole_diameter: 0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN, overall_diameter: 0.870 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN, surface_treatment: ZINC NICKEL OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-729-1867, 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
3-125-0002-98
NSN: 5310-01-729-1867
FSC: 5310 — Nuts and Washers
CAGE: 6YQC9 — FAIRLEAD INTEGRATED, LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1025 OVERALL
thickness0.059 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
hole_diameter0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
overall_diameter0.870 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN
surface_treatmentZINC NICKEL OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
specification/standard_data80205-NAS1149 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
part_name_assigned_by_controlling_agencyWASHER, FLAT
surface_treatment_document_and_classificationAMS2461 TYPE II, GRADE B, CLASS 2 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-729-1867
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3-125-0002-98 · 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: AMS2461 TYPE II, GRADE B, CLASS 2 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL
•
OVERALL DIAMETER: 0.870 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5046 AEROSPACE MATERIAL SPEC STD 1ST MATERIAL RESPONSE OR AMS5046 AEROSPACE MATERIAL SPEC STD 2ND MATERIAL RESPONSE OR AMS5046 OR ASTM A109/A109M, TEMPER 2 NATIONAL STD/SPEC 3RD MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SPECIFICATION/STANDARD DATA: 80205-NAS1149 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
SURFACE TREATMENT: ZINC NICKEL OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS2461 TYPE II, GRADE B, CLASS 2 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL DIAMETER0.870 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5046 AEROSPACE MATERIAL SPEC STD 1ST MATERIAL RESPONSE OR AMS5046 AEROSPACE MATERIAL SPEC STD 2ND MATERIAL RESPONSE OR AMS5046 OR ASTM A109/A109M, TEMPER 2 NATIONAL STD/SPEC 3RD MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SPECIFICATION/STANDARD DATA80205-NAS1149 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE TREATMENTZINC NICKEL OVERALL
PERIPHERAL SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, FLAT
MATERIALSTEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1025 OVERALL
CENTER HOLE SHAPE STYLEROUND
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3-125-0002-98?
3-125-0002-98 is a WASHER,FLAT.
What is the NSN for 3-125-0002-98?
3-125-0002-98 is cataloged in the U.S. Government catalog under NSN 5310-01-729-1867. 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.