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505018 ✓ 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

CABLE ASSEMBLY,SPECIAL PURPOSE,E. Key specifications include width: 30.0 MILLIMETERS NOMINAL SINGLE CONDUCTOR MM, height: 30.0 MILLIMETERS NOMINAL SINGLE CONDUCTOR MM, diameter: 0.431 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN, material: STEEL OVERALL, head_style: FLAT, chamfer_length: 0.094 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-050-5018, 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
505018
NSN: 5315-00-050-5018
FSC: 5315
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
width30.0 MILLIMETERS NOMINAL SINGLE CONDUCTOR MM
height30.0 MILLIMETERS NOMINAL SINGLE CONDUCTOR MM
diameter0.431 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN
materialSTEEL OVERALL
head_styleFLAT
chamfer_length0.094 INCHES NOMINAL IN
overall_length61.0 CENTIMETERS CM
style_designatorSTRAIGHT
pin_chamfer_angle15.0 DEGREES NOMINAL
pin_head_diameter0.562 INCHES NOMINAL IN
under_head_length1.531 INCHES NOMINAL IN
first_hole_diameter0.101 INCHES NOMINAL IN
NSN5315-00-050-5018
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 505018 · 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 CHAMFER ANGLE: 15.0 DEGREES NOMINAL
•
DIAMETER: 0.431 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN
•
HEIGHT: 0.156 INCHES NOMINAL IN
•
UNDER HEAD LENGTH: 1.531 INCHES NOMINAL IN
•
HEAD STYLE: FLAT
•
FIRST HOLE DIAMETER: 0.101 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT
•
PIN HEAD DIAMETER: 0.562 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
TECHNICAL CHARACTERISTICS (FLIS)
PIN CHAMFER ANGLE15.0 DEGREES NOMINAL
DIAMETER0.431 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN
HEIGHT0.156 INCHES NOMINAL IN
UNDER HEAD LENGTH1.531 INCHES NOMINAL IN
HEAD STYLEFLAT
FIRST HOLE DIAMETER0.101 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT
PIN HEAD DIAMETER0.562 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE OF HOLE TO END OF PIN0.156 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
592-6318170Interchangeable
interchangeable cross-reference
interchangeable
505-018Interchangeable
interchangeable cross-reference
interchangeable
17-044Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 505018?
505018 is a CABLE ASSEMBLY,SPECIAL PURPOSE,E.
What parts can replace 505018?
There are 3 known substitutes for 505018: 592-6318170, 505-018, 17-044. Substitute compatibility should be verified for your specific system.
What is the NSN for 505018?
505018 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-050-5018. 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