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166196 ✓ 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,SPLIT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 0.204 INCHES NOMINAL IN, outside_diameter: 0.328 INCHES NOMINAL IN, style_designator: SPLIT, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.012 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-351-4323, 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
166196
NSN: 5310-00-351-4323
FSC: 5310
CAGE: 21877 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.204 INCHES NOMINAL IN
outside_diameter0.328 INCHES NOMINAL IN
style_designatorSPLIT
surface_treatmentPASSIVATE OVERALL
material_thickness0.012 INCHES NOMINAL IN
surface_treatment_document_and_classificationMIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-351-4323
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 166196 · 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
•
STYLE DESIGNATOR: SPLIT
•
HOLE DIAMETER: 0.204 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
MATERIAL THICKNESS: 0.012 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.328 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSPLIT
HOLE DIAMETER0.204 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
MATERIAL THICKNESS0.012 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
OUTSIDE DIAMETER0.328 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
RS8Interchangeable
interchangeable cross-reference
interchangeable
601372Interchangeable
interchangeable cross-reference
interchangeable
452Interchangeable
interchangeable cross-reference
interchangeable
HSBG8SInterchangeable
interchangeable cross-reference
interchangeable
BSN8003GCInterchangeable
interchangeable cross-reference
interchangeable
16S63475-2801Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 166196?
166196 is a WASHER,SPLIT.
What parts can replace 166196?
There are 16 known substitutes for 166196: RS8, 601372, 452 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 166196?
166196 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-351-4323. 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