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Technical Data Sheet
PartsTable / COMPONENT / 550LX
550LX ✓ 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 KEY,TELETYPEWRITER is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-547-7888, 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
550LX
NSN: 5315-00-547-7888
FSC: 5315
CAGE: 27361 — BURKE PRODUCTS INC (USA)
SPECIFICATIONS
Part Number550LX
NSN5315-00-547-7888
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 550LX · 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
•
FSC APPLICATION DATA: TELETYPE AND FACSIMILE EQUIPMENT
TECHNICAL CHARACTERISTICS (FLIS)
FSC APPLICATION DATATELETYPE AND FACSIMILE EQUIPMENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
8-60919-9Interchangeable
interchangeable cross-reference
interchangeable
8-60919-5Interchangeable
interchangeable cross-reference
interchangeable
13159Interchangeable
interchangeable cross-reference
interchangeable
R51Interchangeable
interchangeable cross-reference
interchangeable
510Interchangeable
interchangeable cross-reference
interchangeable
25651Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 550LX?
550LX is a KEY,TELETYPEWRITER.
What parts can replace 550LX?
There are 23 known substitutes for 550LX: 8-60919-9, 8-60919-5, 13159 and 20 more. Substitute compatibility should be verified for your specific system.
Is 550LX still available?
550LX is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026