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2520220 — PIN,SHOULDER,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2520220: PIN,SHOULDER,HEADLESS.

The PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1025 OVERALL, shank_length: 0.500 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.219 INCHES NOMINAL IN, overall_length: 2.310 INCHES NOMINAL IN, shank_diameter: 0.374 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-025-3523, 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
2520220
NSN: 5315-01-025-3523
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 1025 OVERALL
shank_length0.500 INCHES NOMINAL IN
thread_class2A A
thread_length0.219 INCHES NOMINAL IN
overall_length2.310 INCHES NOMINAL IN
shank_diameter0.374 INCHES NOMINAL IN
surface_finish125.000 MICROINCHES OVERALL
undercut_width0.062 INCHES NOMINAL IN
first_end_styleCHAMFERED
style_designatorUNDERCUT
thread_directionRIGHT-HAND
shoulder_diameter0.500 INCHES NOMINAL IN
NSN5315-01-025-3523
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2520220 · 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
•
SHANK DIAMETER: 0.374 INCHES NOMINAL IN
•
SECOND SHANK DIAMETER: 0.251 INCHES NOMINAL IN
•
SURFACE FINISH: 125.000 MICROINCHES OVERALL
•
UNDERCUT WIDTH: 0.062 INCHES NOMINAL IN
•
UNDERCUT DIAMETER: 0.251 INCHES NOMINAL IN
•
FIRST END LOCATION: BOTH ENDS
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.219 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.374 INCHES NOMINAL IN
SECOND SHANK DIAMETER0.251 INCHES NOMINAL IN
SURFACE FINISH125.000 MICROINCHES OVERALL
UNDERCUT WIDTH0.062 INCHES NOMINAL IN
UNDERCUT DIAMETER0.251 INCHES NOMINAL IN
FIRST END LOCATIONBOTH ENDS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.219 INCHES NOMINAL IN
FIRST END STYLECHAMFERED
SHANK LENGTH0.500 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2520220?
2520220 is a PIN,SHOULDER,HEADLESS.
What is the NSN for 2520220?
2520220 is cataloged in the U.S. Government catalog under NSN 5315-01-025-3523. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.