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PartsTable / COMPONENT / 50031801
50031801 ✓ 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,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, shank_length: 0.122 INCHES NOMINAL IN, overall_length: 0.437 INCHES NOMINAL IN, shoulder_diameter: 0.270 INCHES NOMINAL IN, undercut_diameter: 0.180 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 5315-00-777-7186, 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
50031801
NSN: 5315-00-777-7186
FSC: 5315
CAGE: I9021 — NSPA-LD/HAWK
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
shank_length0.122 INCHES NOMINAL IN
overall_length0.437 INCHES NOMINAL IN
shoulder_diameter0.270 INCHES NOMINAL IN
undercut_diameter0.180 INCHES NOMINAL IN
NSN5315-00-777-7186
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 50031801 · 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
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
SHOULDER DIAMETER: 0.270 INCHES NOMINAL IN
•
SHANK LENGTH: 0.122 INCHES NOMINAL IN
•
UNDERCUT DIAMETER: 0.180 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING OVERALL
OVERALL LENGTH0.437 INCHES NOMINAL IN
SHOULDER DIAMETER0.270 INCHES NOMINAL IN
SHANK LENGTH0.122 INCHES NOMINAL IN
UNDERCUT DIAMETER0.180 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
TF4SX17LAInterchangeable
interchangeable cross-reference
interchangeable
61110Interchangeable
interchangeable cross-reference
interchangeable
17001Interchangeable
interchangeable cross-reference
interchangeable
3198678Interchangeable
interchangeable cross-reference
interchangeable
26855Interchangeable
interchangeable cross-reference
interchangeable
373289-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 50031801?
50031801 is a PIN,SHOULDER,HEADLESS.
What parts can replace 50031801?
There are 15 known substitutes for 50031801: TF4SX17LA, 61110, 17001 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 50031801?
50031801 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-777-7186. 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