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301827 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thickness: 0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN, hole_diameter: 0.266 INCHES NOMINAL IN, overall_diameter: 0.542 INCHES MINIMUM AND 0.552 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-121-8328, 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
301827
NSN: 5310-00-121-8328
FSC: 5310
CAGE: U1621 — SIMPSON-LAWRENCE LTD JOHNSON AND EVI RUDE OUTBOARD MOTORS (GBR)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thickness0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
hole_diameter0.266 INCHES NOMINAL IN
overall_diameter0.542 INCHES MINIMUM AND 0.552 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-121-8328
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 301827 · 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
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OVERALL DIAMETER: 0.542 INCHES MINIMUM AND 0.552 INCHES MAXIMUM IN
•
THICKNESS: 0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.266 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER0.542 INCHES MINIMUM AND 0.552 INCHES MAXIMUM IN
THICKNESS0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.266 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
3207Interchangeable
interchangeable cross-reference
interchangeable
3137-2Interchangeable
interchangeable cross-reference
interchangeable
7209503P2Interchangeable
interchangeable cross-reference
interchangeable
HAMMER TOE CRESTS DELUXE 8154AInterchangeable
interchangeable cross-reference
interchangeable
15892Interchangeable
interchangeable cross-reference
interchangeable
0301827Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 301827?
301827 is a WASHER,FLAT.
What parts can replace 301827?
There are 6 known substitutes for 301827: 3207, 3137-2, 7209503P2 and 3 more. Substitute compatibility should be verified for your specific system.
Is 301827 still available?
301827 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026