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PartsTable / COMPONENT / 543-5651-003
543-5651-003 ✓ 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 OVERALL, thickness: 0.032 INCHES NOMINAL IN, hole_diameter: 0.125 INCHES NOMINAL IN, overall_diameter: 0.250 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-820-6712, 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
543-5651-003
NSN: 5310-00-820-6712
FSC: 5310
CAGE: 95105 — ROCKWELL COLLINS, INC. DIV COLLINS AEROSPACE - MISSION SYSTEMS (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thickness0.032 INCHES NOMINAL IN
hole_diameter0.125 INCHES NOMINAL IN
overall_diameter0.250 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationB11H89 FSCM 50293 MFR REF SINGLE MATERIAL RESPONSE OR B11H16 FSCM 50293 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-820-6712
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 543-5651-003 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: B11H89 FSCM 50293 MFR REF SINGLE MATERIAL RESPONSE OR B11H16 FSCM 50293 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
OVERALL DIAMETER: 0.250 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
THICKNESS: 0.032 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.125 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONB11H89 FSCM 50293 MFR REF SINGLE MATERIAL RESPONSE OR B11H16 FSCM 50293 MFR REF SINGLE MATERIAL RESPONSE OVERALL
OVERALL DIAMETER0.250 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
PERIPHERAL SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.032 INCHES NOMINAL IN
HOLE DIAMETER0.125 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
2438Interchangeable
interchangeable cross-reference
interchangeable
AS 70319Interchangeable
interchangeable cross-reference
interchangeable
SE-1003Interchangeable
interchangeable cross-reference
interchangeable
WT 6862-5Interchangeable
interchangeable cross-reference
interchangeable
D15-716WPC633T0636Interchangeable
interchangeable cross-reference
interchangeable
D15-716NPC633T0636Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 543-5651-003?
543-5651-003 is a WASHER,FLAT.
What parts can replace 543-5651-003?
There are 14 known substitutes for 543-5651-003: 2438, AS 70319, SE-1003 and 11 more. Substitute compatibility should be verified for your specific system.
Is 543-5651-003 still available?
543-5651-003 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