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5310PL0903258 ✓ 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,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.377 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN, outside_diameter: 0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN, style_designator: FLAT INTERNAL TEETH, material_thickness: 0.022 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-155-4983, 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
5310PL0903258
NSN: 5310-00-155-4983
FSC: 5310
CAGE: 9009H — JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX (POL)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.377 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN
outside_diameter0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
material_thickness0.022 INCHES NOMINAL IN
NSN5310-00-155-4983
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5310PL0903258 · 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: STEEL OVERALL
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
MATERIAL THICKNESS: 0.022 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.377 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
STYLE DESIGNATORFLAT INTERNAL TEETH
MATERIAL THICKNESS0.022 INCHES NOMINAL IN
HOLE DIAMETER0.377 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
122002Interchangeable
interchangeable cross-reference
interchangeable
FFB571TYPEAInterchangeable
interchangeable cross-reference
interchangeable
1220-2Interchangeable
interchangeable cross-reference
interchangeable
181-61Interchangeable
interchangeable cross-reference
interchangeable
43209Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5310PL0903258?
5310PL0903258 is a WASHER,LOCK.
What parts can replace 5310PL0903258?
There are 21 known substitutes for 5310PL0903258: 122002, FFB571TYPEA, 1220-2 and 18 more. Substitute compatibility should be verified for your specific system.
Is 5310PL0903258 still available?
5310PL0903258 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026