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Technical Data Sheet
PartsTable / COMPONENT / M-20359
M-20359 ✓ 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 PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, shank_length: 0.156 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.238 INCHES NOMINAL IN, overall_length: 0.506 INCHES NOMINAL IN, shank_diameter: 0.161 INCHES MINIMUM AND 0.164 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 5315-01-124-3211, 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
M-20359
NSN: 5315-01-124-3211
FSC: 5315
CAGE: 63743 — WARD LEONARD CT LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
shank_length0.156 INCHES NOMINAL IN
thread_class2A A
thread_length0.238 INCHES NOMINAL IN
overall_length0.506 INCHES NOMINAL IN
shank_diameter0.161 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN
first_end_styleSLOTTED
second_end_styleSQUARE
special_featuresNYLON LOCKING INSERT ON THREADED END
style_designatorSHOULDER
thread_directionRIGHT-HAND
shoulder_diameter0.257 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
NSN5315-01-124-3211
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M-20359 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: STEEL COMP 303 OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
OVERALL LENGTH0.506 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.164 INCHES IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIALSTEEL COMP 303 OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORSHOULDER
THREAD LENGTH0.238 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
5291589Interchangeable
interchangeable cross-reference
interchangeable
E4-6002080Interchangeable
interchangeable cross-reference
interchangeable
MS35319-568Interchangeable
interchangeable cross-reference
interchangeable
20425Interchangeable
interchangeable cross-reference
interchangeable
97-5109-14S2SInterchangeable
interchangeable cross-reference
interchangeable
A2097Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M-20359?
M-20359 is a PIN,SHOULDER,HEADLESS.
What parts can replace M-20359?
There are 9 known substitutes for M-20359: 5291589, E4-6002080, MS35319-568 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M-20359?
M-20359 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-124-3211. 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