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420-30C01 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

420-30C01: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.469 INCHES NOMINAL IN, overall_diameter: 1.469 INCHES NOMINAL IN, special_features: USED ON ENGINE ASSEMBLY C9-275 HP, P/N 905346-021, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-582-1978, 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
420-30C01
NSN: 5310-01-582-1978
FSC: 5310 — Nuts and Washers
CAGE: 8M585 — GOMACO CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.469 INCHES NOMINAL IN
overall_diameter1.469 INCHES NOMINAL IN
special_featuresUSED ON ENGINE ASSEMBLY C9-275 HP, P/N 905346-021
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationPS-2600-NG, BELT PLACER/SPREADER
material_document_and_classificationASTM A992 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyFLAT WASHER .438 W W
NSN5310-01-582-1978
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 420-30C01 · 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: 1.469 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A992 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.469 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A992 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SPECIAL FEATURESUSED ON ENGINE ASSEMBLY C9-275 HP, P/N 905346-021
PERIPHERAL SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYFLAT WASHER .438 W W
END ITEM IDENTIFICATIONPS-2600-NG, BELT PLACER/SPREADER
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.469 INCHES NOMINAL 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 420-30C01?
420-30C01 is a WASHER,FLAT.
What is the NSN for 420-30C01?
420-30C01 is cataloged in the U.S. Government catalog under NSN 5310-01-582-1978. 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.