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A5395 PIECE 55 ✓ 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 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OVERALL, thickness: 0.125 INCHES NOMINAL IN, hole_diameter: 0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN, overall_diameter: 1.250 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 5310-01-221-3028, 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
A5395 PIECE 55
NSN: 5310-01-221-3028
FSC: 5310
CAGE: 64392 — WEIL PUMP CO INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OVERALL
thickness0.125 INCHES NOMINAL IN
hole_diameter0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
overall_diameter1.250 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-B-637 FED SPEC ALL MATERIAL RESPONSES OVERALL
NSN5310-01-221-3028
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A5395 PIECE 55 · 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
•
MATERIAL: COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-637 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 1.250 INCHES NOMINAL IN
•
THICKNESS: 0.125 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
HOLE DIAMETER: 0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE SHAPE STYLEROUND
MATERIALCOPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-637 FED SPEC ALL MATERIAL RESPONSES OVERALL
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER1.250 INCHES NOMINAL IN
THICKNESS0.125 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
T1913Interchangeable
interchangeable cross-reference
interchangeable
42-6880-100-150Interchangeable
interchangeable cross-reference
interchangeable
K2412Interchangeable
interchangeable cross-reference
interchangeable
56020904Interchangeable
interchangeable cross-reference
interchangeable
5397Interchangeable
interchangeable cross-reference
interchangeable
14U1486PCADD5397Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A5395 PIECE 55?
A5395 PIECE 55 is a WASHER,FLAT.
What parts can replace A5395 PIECE 55?
There are 10 known substitutes for A5395 PIECE 55: T1913, 42-6880-100-150, K2412 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A5395 PIECE 55?
A5395 PIECE 55 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-221-3028. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026