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PartsTable / COMPONENT / A3172977
A3172977 ✓ 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: 0.149 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN, outside_diameter: 0.265 INCHES MINIMUM AND 0.271 INCHES MAXIMUM IN, style_designator: SPLIT, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.012 INCHES MINIMUM AND 0.016 INCHES MAXIMUM 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 5310-01-267-5353, 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
A3172977
NSN: 5310-01-267-5353
FSC: 5310
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.149 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
outside_diameter0.265 INCHES MINIMUM AND 0.271 INCHES MAXIMUM IN
style_designatorSPLIT
surface_treatmentPASSIVATE OVERALL
material_thickness0.012 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
NSN5310-01-267-5353
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A3172977 · 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
•
OUTSIDE DIAMETER: 0.265 INCHES MINIMUM AND 0.271 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.149 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SPLIT
•
MATERIAL THICKNESS: 0.012 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.265 INCHES MINIMUM AND 0.271 INCHES MAXIMUM IN
HOLE DIAMETER0.149 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
STYLE DESIGNATORSPLIT
MATERIAL THICKNESS0.012 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
MATERIALSTEEL CORROSION RESISTING OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
5310PL1755823Interchangeable
interchangeable cross-reference
interchangeable
5310PL0733197Interchangeable
interchangeable cross-reference
interchangeable
410578-2Interchangeable
interchangeable cross-reference
interchangeable
5S3-2Interchangeable
interchangeable cross-reference
interchangeable
142158-0001Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A3172977?
A3172977 is a WASHER,SPLIT.
What parts can replace A3172977?
There are 5 known substitutes for A3172977: 5310PL1755823, 5310PL0733197, 410578-2 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A3172977?
A3172977 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-267-5353. 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