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PartsTable / COMPONENT / AA55487-4
AA55487-4 ✓ 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: 1.125 INCHES NOMINAL IN, opening_width: 0.250 INCHES NOMINAL IN, style_designator: LOCK, wire_stock_diameter: 0.058 INCHES NOMINAL IN, end_item_identification: MULTIPLE LAUNCH ROCKET SYSTEM (MLRS). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-465-2256, 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
AA55487-4
NSN: 5315-01-465-2256
FSC: 5315
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
prong_length1.125 INCHES NOMINAL IN
opening_width0.250 INCHES NOMINAL IN
style_designatorLOCK
wire_stock_diameter0.058 INCHES NOMINAL IN
end_item_identificationMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
material_document_and_classificationA313 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5315-01-465-2256
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AA55487-4 · 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
•
WIRE STOCK DIAMETER: 0.058 INCHES NOMINAL IN
•
OPENING WIDTH: 0.250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: LOCK
•
MATERIAL DOCUMENT AND CLASSIFICATION: A313 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
PRONG LENGTH: 1.125 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 316 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
WIRE STOCK DIAMETER0.058 INCHES NOMINAL IN
END ITEM IDENTIFICATIONMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
OPENING WIDTH0.250 INCHES NOMINAL IN
STYLE DESIGNATORLOCK
MATERIAL DOCUMENT AND CLASSIFICATIONA313 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
PRONG LENGTH1.125 INCHES NOMINAL IN
MATERIALSTEEL COMP 316 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
AN415-1-7Interchangeable
interchangeable cross-reference
interchangeable
A-A-55487-1-7Interchangeable
interchangeable cross-reference
interchangeable
A-A-55487Interchangeable
interchangeable cross-reference
interchangeable
AN415-1-4Interchangeable
interchangeable cross-reference
interchangeable
A-A-55487-1-4Interchangeable
interchangeable cross-reference
interchangeable
AA55487-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AA55487-4?
AA55487-4 is a PIN,LOCK.
What parts can replace AA55487-4?
There are 9 known substitutes for AA55487-4: AN415-1-7, A-A-55487-1-7, A-A-55487 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AA55487-4?
AA55487-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-465-2256. 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