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Technical Data Sheet
PartsTable / COMPONENT / LA656-2
LA656-2 ✓ 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: 0.010 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN, hole_diameter: 0.108 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES ALL SURFACES, overall_diameter: 0.220 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN, surface_treatment: CADMIUM OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-209-5238, 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
LA656-2
NSN: 5310-00-209-5238
FSC: 5310
CAGE: 46717 — PETTIBONE LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thickness0.010 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
hole_diameter0.108 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES ALL SURFACES
overall_diameter0.220 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-209-5238
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: LA656-2 · 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: COPPER ALLOY OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SURFACE FINISH: 63.0 MICROINCHES ALL SURFACES
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
HOLE DIAMETER: 0.108 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
•
THICKNESS: 0.010 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY OVERALL
SURFACE TREATMENTCADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE FINISH63.0 MICROINCHES ALL SURFACES
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
HOLE DIAMETER0.108 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
THICKNESS0.010 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
CENTER HOLE SHAPE STYLEROUND
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER0.220 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
D8708PC33Interchangeable
interchangeable cross-reference
interchangeable
D8960PC36Interchangeable
interchangeable cross-reference
interchangeable
D8527PC33Interchangeable
interchangeable cross-reference
interchangeable
9U0435Interchangeable
interchangeable cross-reference
interchangeable
382176Interchangeable
interchangeable cross-reference
interchangeable
3270C33Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is LA656-2?
LA656-2 is a WASHER,FLAT.
What parts can replace LA656-2?
There are 9 known substitutes for LA656-2: D8708PC33, D8960PC36, D8527PC33 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for LA656-2?
LA656-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-209-5238. 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