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Technical Data Sheet
PartsTable / COMPONENT / 11588659-3
11588659-3 ✓ 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 CORROSION RESISTING OVERALL, thickness: 0.031 INCHES NOMINAL IN, hole_diameter: 0.187 INCHES NOMINAL IN, overall_diameter: 0.250 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-655-7511, 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
11588659-3
NSN: 5310-00-655-7511
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thickness0.031 INCHES NOMINAL IN
hole_diameter0.187 INCHES NOMINAL IN
overall_diameter0.250 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-655-7511
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 11588659-3 · 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: STEEL CORROSION RESISTING OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
PERIPHERAL SHAPE STYLE: ROUND
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OVERALL DIAMETER: 0.250 INCHES NOMINAL IN
•
THICKNESS: 0.031 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.187 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING OVERALL
CENTER HOLE SHAPE STYLEROUND
PERIPHERAL SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER0.250 INCHES NOMINAL IN
THICKNESS0.031 INCHES NOMINAL IN
HOLE DIAMETER0.187 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
868Interchangeable
interchangeable cross-reference
interchangeable
4008Interchangeable
interchangeable cross-reference
interchangeable
12121Interchangeable
interchangeable cross-reference
interchangeable
1385BInterchangeable
interchangeable cross-reference
interchangeable
MIL-E-1BTYPE868Interchangeable
interchangeable cross-reference
interchangeable
MIL-E-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11588659-3?
11588659-3 is a WASHER,FLAT.
What parts can replace 11588659-3?
There are 22 known substitutes for 11588659-3: 868, 4008, 12121 and 19 more. Substitute compatibility should be verified for your specific system.
Is 11588659-3 still available?
11588659-3 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026