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PartsTable / COMPONENT / 51304743210
51304743210 ✓ 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: STEEL COMP 8735 OVERALL, thickness: 0.125 INCHES NOMINAL IN, hole_diameter: 0.406 INCHES NOMINAL IN, hardness_rating: 24.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM, overall_diameter: 0.578 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-474-3210, 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
51304743210
NSN: 5310-00-474-3210
FSC: 5310
CAGE: SCY13 — E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES FORCES ARMEE
SPECIFICATIONS
materialSTEEL COMP 8735 OVERALL
thickness0.125 INCHES NOMINAL IN
hole_diameter0.406 INCHES NOMINAL IN
hardness_rating24.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM
overall_diameter0.578 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS6320 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-474-3210
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 51304743210 · 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
•
CENTER HOLE SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 0.578 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.406 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS6320 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
HARDNESS RATING: 24.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 8735 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER0.578 INCHES NOMINAL IN
HOLE DIAMETER0.406 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS6320 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING24.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 8735 OVERALL
THICKNESS0.125 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
31434Interchangeable
interchangeable cross-reference
interchangeable
G377555-4Interchangeable
interchangeable cross-reference
interchangeable
21509N GRP3 PC25Interchangeable
interchangeable cross-reference
interchangeable
21509NInterchangeable
interchangeable cross-reference
interchangeable
M22031434Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51304743210?
51304743210 is a WASHER,FLAT.
What parts can replace 51304743210?
There are 5 known substitutes for 51304743210: 31434, G377555-4, 21509N GRP3 PC25 and 2 more. Substitute compatibility should be verified for your specific system.
Is 51304743210 still available?
51304743210 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