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PartsTable / COMPONENT / 81-33516
81-33516 ✓ 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: 0.563 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.203 INCHES NOMINAL IN, overall_length: 1.344 INCHES NOMINAL IN, shank_diameter: 0.250 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 5315-00-324-8973, 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
81-33516
NSN: 5315-00-324-8973
FSC: 5315
CAGE: 32242 — JOHNSON CONTROLS, INC DIV BUILDING EFFICIENCY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
shank_length0.563 INCHES NOMINAL IN
thread_class2A A
thread_length0.203 INCHES NOMINAL IN
overall_length1.344 INCHES NOMINAL IN
shank_diameter0.250 INCHES NOMINAL IN
first_end_styleCHAMFERED
special_featuresGROOVE IN SHANK END
style_designatorSHOULDER
thread_directionRIGHT-HAND
first_end_locationBOTH ENDS
nominal_thread_size0.190 INCHES IN
NSN5315-00-324-8973
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 81-33516 · 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
•
FIRST END TAPER ANGLE: 45.0 DEGREES NOMINAL
•
FIRST END TAPER LENGTH: 0.031 INCHES NOMINAL IN
•
SECOND SHANK DIAMETER: 0.250 INCHES NOMINAL IN
•
THREAD LENGTH: 0.203 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: 19.5978-375 FSCM 32242 MFR REF SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
FIRST END TAPER ANGLE45.0 DEGREES NOMINAL
FIRST END TAPER LENGTH0.031 INCHES NOMINAL IN
SECOND SHANK DIAMETER0.250 INCHES NOMINAL IN
THREAD LENGTH0.203 INCHES NOMINAL IN
SPECIAL FEATURESGROOVE IN SHANK END
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIALSTEEL CORROSION RESISTING OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION19.5978-375 FSCM 32242 MFR REF SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORSHOULDER
SHANK DIAMETER0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
6438089TP639Interchangeable
interchangeable cross-reference
interchangeable
A35863Interchangeable
interchangeable cross-reference
interchangeable
F-961-CInterchangeable
interchangeable cross-reference
interchangeable
852758Interchangeable
interchangeable cross-reference
interchangeable
33516Interchangeable
interchangeable cross-reference
interchangeable
7199753Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81-33516?
81-33516 is a PIN,SHOULDER,HEADLESS.
What parts can replace 81-33516?
There are 16 known substitutes for 81-33516: 6438089TP639, A35863, F-961-C and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81-33516?
81-33516 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-324-8973. 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