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Technical Data Sheet
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040354 ✓ 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,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include specific_use: EAR, design_designation: WELCH-ALLYN, end_item_identification: OTOSCOPE AND OPHTHALMOSCOPE,NSN: 6515-01-333-3165, part_name_assigned_by_controlling_agency: HEAD OTOSCOPE DIAGNOSTIC POCKETSCOPE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-448-9815, 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
040354
NSN: 5315-00-448-9815
FSC: 5315
CAGE: 31361 — WOODWARD, INC. (USA)
SPECIFICATIONS
specific_useEAR
design_designationWELCH-ALLYN
end_item_identificationOTOSCOPE AND OPHTHALMOSCOPE,NSN: 6515-01-333-3165
part_name_assigned_by_controlling_agencyHEAD OTOSCOPE DIAGNOSTIC POCKETSCOPE
NSN5315-00-448-9815
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 040354 · 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 OVERALL
•
PIN OVERALL LENGTH: 1.345 INCHES NOMINAL IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
FIRST END STYLE: CHAMFERED
•
PIN OVERALL DIAMETER: 0.3720 INCHES NOMINAL IN
•
FIRST END TAPER LENGTH: 0.188 INCHES NOMINAL IN
•
FIRST END TAPER ANGLE: 30.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
PIN OVERALL LENGTH1.345 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
FIRST END STYLECHAMFERED
PIN OVERALL DIAMETER0.3720 INCHES NOMINAL IN
FIRST END TAPER LENGTH0.188 INCHES NOMINAL IN
FIRST END TAPER ANGLE30.0 DEGREES NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
21111Interchangeable
interchangeable cross-reference
interchangeable
6515NCM040193Interchangeable
interchangeable cross-reference
interchangeable
04-0354Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 040354?
040354 is a PIN,STRAIGHT,HEADLESS.
What parts can replace 040354?
There are 3 known substitutes for 040354: 21111, 6515NCM040193, 04-0354. Substitute compatibility should be verified for your specific system.
What is the NSN for 040354?
040354 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-448-9815. 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