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PartsTable / COMPONENT / A9550 ITEM 5
A9550 ITEM 5 ✓ 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,SPRING is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-571-1304, 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
A9550 ITEM 5
NSN: 5315-01-571-1304
FSC: 5315
CAGE: 28953 — RIX INDUSTRIES (USA)
SPECIFICATIONS
Part NumberA9550 ITEM 5
NSN5315-01-571-1304
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A9550 ITEM 5 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
177943Interchangeable
interchangeable cross-reference
interchangeable
1946-1008P3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A9550 ITEM 5?
A9550 ITEM 5 is a PIN,SPRING.
What parts can replace A9550 ITEM 5?
There are 2 known substitutes for A9550 ITEM 5: 177943, 1946-1008P3. Substitute compatibility should be verified for your specific system.
What is the NSN for A9550 ITEM 5?
A9550 ITEM 5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-571-1304. 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