PartsTable
Technical Data Sheet
525-3SS ✓ 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 303 AND STEEL COMP 303SE OVERALL, thickness: 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN, hole_diameter: 0.105 INCHES NOMINAL IN, overall_diameter: 0.250 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-487-7472, 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
525-3SS
NSN: 5310-00-487-7472
FSC: 5310
CAGE: 19315 — HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS FORMER BENDIX NAVIGATION AND CONTROL SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 303 AND STEEL COMP 303SE OVERALL
thickness0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
hole_diameter0.105 INCHES NOMINAL IN
overall_diameter0.250 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS 5640 ASSN STD 1ST MATERIAL RESPONSE AND SAE 30303 ASSN STD 2ND MATERIAL RESPONSE AND SAE 30303SE ASSN STD 3RD MATERIAL RESPONSE OVERALL
NSN5310-00-487-7472
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 525-3SS · 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: 0.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5640 ASSN STD 1ST MATERIAL RESPONSE AND SAE 30303 ASSN STD 2ND MATERIAL RESPONSE AND SAE 30303SE ASSN STD 3RD MATERIAL RESPONSE OVERALL
HOLE DIAMETER: 0.105 INCHES NOMINAL IN
THICKNESS: 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
MATERIAL: STEEL COMP 303 AND STEEL COMP 303SE OVERALL
PERIPHERAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER0.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5640 ASSN STD 1ST MATERIAL RESPONSE AND SAE 30303 ASSN STD 2ND MATERIAL RESPONSE AND SAE 30303SE ASSN STD 3RD MATERIAL RESPONSE OVERALL
HOLE DIAMETER0.105 INCHES NOMINAL IN
THICKNESS0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
MATERIALSTEEL COMP 303 AND STEEL COMP 303SE OVERALL
PERIPHERAL SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
218140Interchangeable
interchangeable cross-reference
interchangeable
74468072003Interchangeable
interchangeable cross-reference
interchangeable
A5-95Interchangeable
interchangeable cross-reference
interchangeable
92701030000Interchangeable
Same NIIN cross-reference
interchangeable
W0-3SSInterchangeable
Same NIIN cross-reference
interchangeable
10121422Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 525-3SS?
525-3SS is a WASHER,FLAT.
What parts can replace 525-3SS?
There are 6 known substitutes for 525-3SS: 218140, 74468072003, A5-95 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 525-3SS?
525-3SS is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-487-7472. This indicates validated use in U.S. government and defense supply chains.
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