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PartsTable / COMPONENT / 4067B51
4067B51 ✓ 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,GROOVED,HEADLESS is a the manufacturer industrial component. Key specifications include diameter: 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN, overall_length: 0.940 INCHES NOMINAL IN, undercut_width: 0.060 INCHES NOMINAL IN, first_end_style: CHAMFERED, undercut_radius: 0.030 INCHES NOMINAL IN, effective_length: 0.660 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 5315-00-068-5760, 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
4067B51
NSN: 5315-00-068-5760
FSC: 5315
CAGE: 82402 — TRIUMPH GEAR SYSTEMS INC DBA TRIUMPH GEAR SYSTEMS INC (USA)
SPECIFICATIONS
diameter0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
overall_length0.940 INCHES NOMINAL IN
undercut_width0.060 INCHES NOMINAL IN
first_end_styleCHAMFERED
undercut_radius0.030 INCHES NOMINAL IN
effective_length0.660 INCHES NOMINAL IN
style_designatorGROOVE
undercut_diameter0.270 INCHES NOMINAL IN
first_end_locationBOTH ENDS
first_end_taper_angle45.0 DEGREES NOMINAL
first_end_taper_length0.015 INCHES NOMINAL IN
second_end_relationship_with_first_endIDENTICAL
NSN5315-00-068-5760
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4067B51 · 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
•
STYLE DESIGNATOR: GROOVE
•
FIRST END LOCATION: BOTH ENDS
•
UNDERCUT DIAMETER: 0.270 INCHES NOMINAL IN
•
DIAMETER: 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
•
FIRST END TAPER LENGTH: 0.015 INCHES NOMINAL IN
•
UNDERCUT RADIUS: 0.030 INCHES NOMINAL IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORGROOVE
FIRST END LOCATIONBOTH ENDS
UNDERCUT DIAMETER0.270 INCHES NOMINAL IN
DIAMETER0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
FIRST END TAPER LENGTH0.015 INCHES NOMINAL IN
OVERALL LENGTH0.940 INCHES NOMINAL IN
UNDERCUT RADIUS0.030 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
UNDERCUT WIDTH0.060 INCHES NOMINAL IN
FIRST END TAPER ANGLE45.0 DEGREES NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
406751Interchangeable
interchangeable cross-reference
interchangeable
262589Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4067B51?
4067B51 is a PIN,GROOVED,HEADLESS.
What parts can replace 4067B51?
There are 2 known substitutes for 4067B51: 406751, 262589. Substitute compatibility should be verified for your specific system.
What is the NSN for 4067B51?
4067B51 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-068-5760. 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