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3669956 ✓ 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,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, first_end_style: SQUARE, surface_treatment: PHOSPHATE OVERALL, pin_overall_length: 8.000 INCHES NOMINAL IN, pin_overall_diameter: 0.1250 INCHES NOMINAL IN, material_document_and_classification: QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE 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 5315-00-522-8029, 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
3669956
NSN: 5315-00-522-8029
FSC: 5315
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
first_end_styleSQUARE
surface_treatmentPHOSPHATE OVERALL
pin_overall_length8.000 INCHES NOMINAL IN
pin_overall_diameter0.1250 INCHES NOMINAL IN
material_document_and_classificationQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
second_end_relationship_with_first_endIDENTICAL
NSN5315-00-522-8029
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3669956 · 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
•
PIN OVERALL LENGTH: 8.000 INCHES NOMINAL IN
•
PIN OVERALL DIAMETER: 0.1250 INCHES NOMINAL IN
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
MATERIAL: STEEL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
FIRST END STYLE: SQUARE
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
TECHNICAL CHARACTERISTICS (FLIS)
PIN OVERALL LENGTH8.000 INCHES NOMINAL IN
PIN OVERALL DIAMETER0.1250 INCHES NOMINAL IN
SURFACE TREATMENTPHOSPHATE OVERALL
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
FIRST END STYLESQUARE
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
UL 542Interchangeable
interchangeable cross-reference
interchangeable
M970/15-1Interchangeable
interchangeable cross-reference
interchangeable
P803Interchangeable
interchangeable cross-reference
interchangeable
5228029ANInterchangeable
interchangeable cross-reference
interchangeable
5228029Interchangeable
interchangeable cross-reference
interchangeable
C640Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3669956?
3669956 is a PIN,STRAIGHT,HEADLESS.
What parts can replace 3669956?
There are 6 known substitutes for 3669956: UL 542, M970/15-1, P803 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3669956?
3669956 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-522-8029. 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