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5188409-3 — PIN,SHOULDER,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5188409-3: PIN,SHOULDER,HEADLESS.

The PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, shank_length: 0.090 INCHES NOMINAL IN, overall_length: 1.235 INCHES NOMINAL IN, shank_diameter: 0.0965 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM IN, undercut_width: 0.010 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN, first_end_style: SQUARE. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-365-1371, 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
5188409-3
NSN: 5315-01-365-1371
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
shank_length0.090 INCHES NOMINAL IN
overall_length1.235 INCHES NOMINAL IN
shank_diameter0.0965 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM IN
undercut_width0.010 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN
first_end_styleSQUARE
style_designatorUNDERCUT
shoulder_diameter0.1950 INCHES MINIMUM AND 0.1970 INCHES MAXIMUM IN
undercut_diameter0.080 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN
first_end_locationSHANK END
material_document_and_classificationQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
second_end_relationship_with_first_endIDENTICAL
NSN5315-01-365-1371
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5188409-3 · 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: 0.0965 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM IN
•
UNDERCUT WIDTH: 0.010 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN
•
UNDERCUT DIAMETER: 0.080 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN
•
FIRST END LOCATION: SHANK END
•
FIRST END STYLE: SQUARE
•
SHANK LENGTH: 0.090 INCHES NOMINAL IN
•
STYLE DESIGNATOR: UNDERCUT
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.0965 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM IN
UNDERCUT WIDTH0.010 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN
UNDERCUT DIAMETER0.080 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN
FIRST END LOCATIONSHANK END
FIRST END STYLESQUARE
SHANK LENGTH0.090 INCHES NOMINAL IN
STYLE DESIGNATORUNDERCUT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.235 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
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 5188409-3?
5188409-3 is a PIN,SHOULDER,HEADLESS.
What is the NSN for 5188409-3?
5188409-3 is cataloged in the U.S. Government catalog under NSN 5315-01-365-1371. 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.