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Technical Data Sheet
PartsTable / COMPONENT / PY0046
PY0046 ✓ 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,FINISHING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN, overall_height: 0.078 INCHES NOMINAL IN, outside_diameter: 0.255 INCHES MAXIMUM IN, style_designator: FINISHING, 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 5310-00-685-1618, 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
PY0046
NSN: 5310-00-685-1618
FSC: 5310
CAGE: 77221 — PHAOSTRON INSTRUMENT AND ELECTRONIC COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
overall_height0.078 INCHES NOMINAL IN
outside_diameter0.255 INCHES MAXIMUM IN
style_designatorFINISHING
surface_treatmentCADMIUM OVERALL
material_thickness0.031 INCHES NOMINAL IN
NSN5310-00-685-1618
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: PY0046 · 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
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: FINISHING
•
OUTSIDE DIAMETER: 0.255 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.031 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT0.078 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL OVERALL
STYLE DESIGNATORFINISHING
OUTSIDE DIAMETER0.255 INCHES MAXIMUM IN
HOLE DIAMETER0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
MATERIAL THICKNESS0.031 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
21251Interchangeable
interchangeable cross-reference
interchangeable
GGG-R-180Interchangeable
interchangeable cross-reference
interchangeable
A-A-2928Interchangeable
interchangeable cross-reference
interchangeable
ESD33626-4Interchangeable
interchangeable cross-reference
interchangeable
ESD3362-4Interchangeable
interchangeable cross-reference
interchangeable
ASB156-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PY0046?
PY0046 is a WASHER,FINISHING.
What parts can replace PY0046?
There are 13 known substitutes for PY0046: 21251, GGG-R-180, A-A-2928 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PY0046?
PY0046 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-685-1618. 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