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Technical Data Sheet
PartsTable / COMPONENT / 688001-011
688001-011 ✓ 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 OVERALL, thickness: 0.065 INCHES NOMINAL IN, hole_diameter: 0.312 INCHES NOMINAL IN, overall_diameter: 0.750 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL, peripheral_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 5310-00-058-3628, 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
688001-011
NSN: 5310-00-058-3628
FSC: 5310
CAGE: 12436 — BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. DIV BAE SYSTEMS INFORMATION & ELECTRONIC SYSTEMS INTEGRATION INC (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
thickness0.065 INCHES NOMINAL IN
hole_diameter0.312 INCHES NOMINAL IN
overall_diameter0.750 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-S-763,CLASS 7,TYPE B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-058-3628
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 688001-011 · 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
•
OVERALL DIAMETER: 0.750 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
THICKNESS: 0.065 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
HOLE DIAMETER: 0.312 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,CLASS 7,TYPE B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL DIAMETER0.750 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.065 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.312 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CLASS 7,TYPE B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
11827Interchangeable
interchangeable cross-reference
interchangeable
242-12Interchangeable
interchangeable cross-reference
interchangeable
583628Interchangeable
Same NIIN cross-reference
interchangeable
D118-27Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 688001-011?
688001-011 is a WASHER,FLAT.
What parts can replace 688001-011?
There are 4 known substitutes for 688001-011: 11827, 242-12, 583628 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 688001-011?
688001-011 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-058-3628. 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