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304178 ✓ 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 OVERALL, shank_length: 0.093 INCHES NOMINAL IN, overall_length: 0.483 INCHES NOMINAL IN, shank_diameter: 0.180 INCHES NOMINAL IN, first_end_style: POINTED, second_end_style: SQUARE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-829-0227, 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
304178
NSN: 5315-00-829-0227
FSC: 5315
CAGE: 80256 — OUTBOARD MARINE CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
shank_length0.093 INCHES NOMINAL IN
overall_length0.483 INCHES NOMINAL IN
shank_diameter0.180 INCHES NOMINAL IN
first_end_stylePOINTED
second_end_styleSQUARE
style_designatorSHOULDER
shoulder_diameter0.250 INCHES NOMINAL IN
first_end_locationPOINTED END
first_end_taper_length0.093 INCHES NOMINAL IN
second_end_relationship_with_first_endNOT IDENTICAL
NSN5315-00-829-0227
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 304178 · 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
•
SHANK DIAMETER: 0.180 INCHES NOMINAL IN
•
SHANK LENGTH: 0.093 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
FIRST END TAPER LENGTH: 0.093 INCHES NOMINAL IN
•
FIRST END LOCATION: POINTED END
•
FIRST END STYLE: POINTED
•
SECOND END RELATIONSHIP WITH FIRST END: NOT IDENTICAL
•
SHOULDER DIAMETER: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SHANK DIAMETER0.180 INCHES NOMINAL IN
SHANK LENGTH0.093 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
FIRST END TAPER LENGTH0.093 INCHES NOMINAL IN
FIRST END LOCATIONPOINTED END
FIRST END STYLEPOINTED
SECOND END RELATIONSHIP WITH FIRST ENDNOT IDENTICAL
SHOULDER DIAMETER0.250 INCHES NOMINAL IN
OVERALL LENGTH0.483 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
70320Interchangeable
interchangeable cross-reference
interchangeable
304178Interchangeable
interchangeable cross-reference
interchangeable
DL3500BH/70320Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 304178?
304178 is a PIN,SHOULDER,HEADLESS.
What parts can replace 304178?
There are 3 known substitutes for 304178: 70320, 304178, DL3500BH/70320. Substitute compatibility should be verified for your specific system.
What is the NSN for 304178?
304178 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-829-0227. 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