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78SP ✓ 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 material: STEEL OVERALL, first_end_style: SQUARE, pin_overall_length: 1.375 INCHES NOMINAL IN, pin_overall_diameter: 0.1850 INCHES MINIMUM AND 0.1870 INCHES MAXIMUM IN, second_end_relationship_with_first_end: IDENTICAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-522-6146, 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
78SP
NSN: 5315-00-522-6146
FSC: 5315
CAGE: 72447 — DANA COMMERCIAL VEHICLE MANUFACTURING, LLC DBA DANA COMMERCIAL VEHICLE PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
first_end_styleSQUARE
pin_overall_length1.375 INCHES NOMINAL IN
pin_overall_diameter0.1850 INCHES MINIMUM AND 0.1870 INCHES MAXIMUM IN
second_end_relationship_with_first_endIDENTICAL
NSN5315-00-522-6146
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 78SP · 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 OVERALL LENGTH: 1.375 INCHES NOMINAL IN
•
FIRST END STYLE: SQUARE
•
MATERIAL: STEEL OVERALL
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
PIN OVERALL DIAMETER: 0.1850 INCHES MINIMUM AND 0.1870 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
PIN OVERALL LENGTH1.375 INCHES NOMINAL IN
FIRST END STYLESQUARE
MATERIALSTEEL OVERALL
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
PIN OVERALL DIAMETER0.1850 INCHES MINIMUM AND 0.1870 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
61125Interchangeable
interchangeable cross-reference
interchangeable
T7602239-46Interchangeable
interchangeable cross-reference
interchangeable
00044Interchangeable
interchangeable cross-reference
interchangeable
20044Interchangeable
interchangeable cross-reference
interchangeable
61,125Interchangeable
interchangeable cross-reference
interchangeable
167-7023Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 78SP?
78SP is a PIN,STRAIGHT,HEADLESS.
What parts can replace 78SP?
There are 6 known substitutes for 78SP: 61125, T7602239-46, 00044 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 78SP?
78SP is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-522-6146. 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