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PartsTable / COMPONENT / 557904
557904 ✓ 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,SPRING TENSION is a Legrand industrial component. Key specifications include material: STEEL COMP 1095 OVERALL, hole_diameter: 0.526 INCHES MINIMUM AND 0.536 INCHES MAXIMUM IN, overall_height: 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN, outside_diameter: 0.729 INCHES MINIMUM AND 0.739 INCHES MAXIMUM IN, surface_treatment: CADMIUM OVERALL, material_thickness: 0.009 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-087-3155, 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
557904
NSN: 5310-00-087-3155
FSC: 5310
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL COMP 1095 OVERALL
hole_diameter0.526 INCHES MINIMUM AND 0.536 INCHES MAXIMUM IN
overall_height0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
outside_diameter0.729 INCHES MINIMUM AND 0.739 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
material_thickness0.009 INCHES NOMINAL IN
material_document_and_classificationMIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-087-3155
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 557904 · 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
•
OUTSIDE DIAMETER: 0.729 INCHES MINIMUM AND 0.739 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.009 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1095 OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
HOLE DIAMETER: 0.526 INCHES MINIMUM AND 0.536 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.729 INCHES MINIMUM AND 0.739 INCHES MAXIMUM IN
MATERIAL THICKNESS0.009 INCHES NOMINAL IN
MATERIALSTEEL COMP 1095 OVERALL
SURFACE TREATMENTCADMIUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
HOLE DIAMETER0.526 INCHES MINIMUM AND 0.536 INCHES MAXIMUM IN
OVERALL HEIGHT0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
35Interchangeable
Pago tarjeta de credito
interchangeable
X380-13Interchangeable
interchangeable cross-reference
interchangeable
PPC95Interchangeable
interchangeable cross-reference
interchangeable
140BInterchangeable
interchangeable cross-reference
interchangeable
R3Interchangeable
interchangeable cross-reference
interchangeable
1140GInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 557904?
557904 is a WASHER,SPRING TENSION manufactured by Legrand.
What parts can replace 557904?
There are 31 known substitutes for 557904: 35, X380-13, PPC95 and 28 more. Substitute compatibility should be verified for your specific system.
Is 557904 still available?
557904 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026