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407 561 ✓ Verified by PartsTable
Legrand · 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 Legrand industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.025 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN, hole_diameter: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN, overall_diameter: 0.307 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN, surface_treatment: CADMIUM OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-167-0815, 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
407 561
NSN: 5310-00-167-0815
FSC: 5310
CAGE: 77294 — PIPER INDUSTRIAL MANUFACTURING COMPANY, LLC DIV PIPER INDUSTRIAL MANUFACTURING COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.025 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
hole_diameter0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
overall_diameter0.307 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-167-0815
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 407 561 · Legrand ⚠ 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
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
PERIPHERAL SHAPE STYLE: ROUND
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
HOLE DIAMETER: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
•
OVERALL DIAMETER: 0.307 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
•
THICKNESS: 0.025 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
CENTER HOLE SHAPE STYLEROUND
PERIPHERAL SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
OVERALL DIAMETER0.307 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
THICKNESS0.025 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
218322Interchangeable
interchangeable cross-reference
interchangeable
AN960-4Interchangeable
interchangeable cross-reference
interchangeable
241-0003Interchangeable
interchangeable cross-reference
interchangeable
5310PL0852916Interchangeable
Same NIIN cross-reference
interchangeable
9387711105Interchangeable
Same NIIN cross-reference
interchangeable
Z00.N5741503115Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 407 561?
407 561 is a WASHER,FLAT manufactured by Legrand.
What parts can replace 407 561?
There are 8 known substitutes for 407 561: 218322, AN960-4, 241-0003 and 5 more. Substitute compatibility should be verified for your specific system.
Is 407 561 still available?
407 561 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