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AN415-4 ✓ 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,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, prong_length: 0.941 INCHES NOMINAL IN, opening_width: 0.250 INCHES NOMINAL IN, style_designator: LOCK, wire_stock_diameter: 0.0585 INCHES NOMINAL IN, material_document_and_classification: QQ-W-423 COND B 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 5315-01-057-8371, 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
AN415-4
NSN: 5315-01-057-8371
FSC: 5315
CAGE: 81352 — AIR FORCE-NAVY AERONAUTICAL SPECIFICATIONS PROMULGATED BY AERONAUTICAL STANDARDS GROUP
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
prong_length0.941 INCHES NOMINAL IN
opening_width0.250 INCHES NOMINAL IN
style_designatorLOCK
wire_stock_diameter0.0585 INCHES NOMINAL IN
material_document_and_classificationQQ-W-423 COND B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-01-057-8371
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AN415-4 · 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
•
STYLE DESIGNATOR: LOCK
•
MATERIAL: STEEL COMP 316 OVERALL
•
OPENING WIDTH: 0.250 INCHES NOMINAL IN
•
WIRE STOCK DIAMETER: 0.0585 INCHES NOMINAL IN
•
PRONG LENGTH: 0.941 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-423 COND B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORLOCK
MATERIALSTEEL COMP 316 OVERALL
OPENING WIDTH0.250 INCHES NOMINAL IN
WIRE STOCK DIAMETER0.0585 INCHES NOMINAL IN
PRONG LENGTH0.941 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-423 COND B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
AN3144-4502Interchangeable
interchangeable cross-reference
interchangeable
618184Interchangeable
interchangeable cross-reference
interchangeable
LA-361-18Interchangeable
interchangeable cross-reference
interchangeable
FFS325Interchangeable
interchangeable cross-reference
interchangeable
4095Interchangeable
interchangeable cross-reference
interchangeable
A1667PC64Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN415-4?
AN415-4 is a PIN,LOCK.
What parts can replace AN415-4?
There are 11 known substitutes for AN415-4: AN3144-4502, 618184, LA-361-18 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN415-4?
AN415-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-057-8371. 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