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1003285-3 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1003285-3: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include length: 2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN, material: STEEL COMP 4130 OVERALL, thickness: 0.029 INCHES NOMINAL IN, hole_diameter: 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN, heat_treatment: HOT ROLLED AND ANNEALED, width_across_flats: 2.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-026-1130, 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
1003285-3
NSN: 5310-01-026-1130
FSC: 5310 — Nuts and Washers
CAGE: 75394 — EMERSON POWER TRANSMISSION CORPORATION DBA EMERSON DIV EMERSON POWER TRANSMISSION DIVISION (USA)
SPECIFICATIONS
length2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN
materialSTEEL COMP 4130 OVERALL
thickness0.029 INCHES NOMINAL IN
hole_diameter1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN
heat_treatmentHOT ROLLED AND ANNEALED
width_across_flats2.000 INCHES NOMINAL IN
peripheral_shape_styleRECTANGULAR
supplementary_featuresTO BE BENT AT INSTALLATION
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM A505 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-026-1130
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1003285-3 · 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
•
WIDTH ACROSS FLATS: 2.000 INCHES NOMINAL IN
•
LENGTH: 2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN
•
HEAT TREATMENT: HOT ROLLED AND ANNEALED
•
SUPPLEMENTARY FEATURES: TO BE BENT AT INSTALLATION
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A505 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: RECTANGULAR
•
MATERIAL: STEEL COMP 4130 OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS2.000 INCHES NOMINAL IN
LENGTH2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN
HEAT TREATMENTHOT ROLLED AND ANNEALED
SUPPLEMENTARY FEATURESTO BE BENT AT INSTALLATION
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A505 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLERECTANGULAR
MATERIALSTEEL COMP 4130 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER1.052 INCHES MINIMUM AND 1.072 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 2
740-6-00112 PIECE 5Reference document
Same NSN cross-reference
Reference document — Secondary reference
CJ67290PC 5Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 1003285-3?
1003285-3 is a WASHER,FLAT.
What parts can replace 1003285-3?
There are 2 known substitutes for 1003285-3: 740-6-00112 PIECE 5, CJ67290PC 5. Substitute compatibility should be verified for your specific system.
What is the NSN for 1003285-3?
1003285-3 is cataloged in the U.S. Government catalog under NSN 5310-01-026-1130. 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.