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Technical Data Sheet
PartsTable / COMPONENT / 111571H
111571H ✓ 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,TAPERED,THREADED is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL OVERALL, taper_length: 2.450 INCHES NOMINAL IN, thread_class: 2A A, thread_direction: RIGHT-HAND, nominal_thread_size: 0.375 INCHES IN, taper_major_diameter: 0.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-358-9573, 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
111571H
NSN: 5315-00-358-9573
FSC: 5315
CAGE: 81289 — INTERNATIONAL HARVESTER CO MOTOR TRUCK DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
taper_length2.450 INCHES NOMINAL IN
thread_class2A A
thread_directionRIGHT-HAND
nominal_thread_size0.375 INCHES IN
taper_major_diameter0.500 INCHES NOMINAL IN
taper_minor_diameter0.406 INCHES NOMINAL IN
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5315-00-358-9573
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 111571H · 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
•
THREAD CLASS: 2A A
•
MATERIAL: STEEL OVERALL
•
TAPER MAJOR DIAMETER: 0.500 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
TAPER MINOR DIAMETER: 0.406 INCHES NOMINAL IN
•
TAPER LENGTH: 2.450 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A A
MATERIALSTEEL OVERALL
TAPER MAJOR DIAMETER0.500 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.375 INCHES IN
TAPER MINOR DIAMETER0.406 INCHES NOMINAL IN
TAPER LENGTH2.450 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
50192Interchangeable
interchangeable cross-reference
interchangeable
600D16Interchangeable
interchangeable cross-reference
interchangeable
328413CInterchangeable
interchangeable cross-reference
interchangeable
7034980Interchangeable
interchangeable cross-reference
interchangeable
25-4265YInterchangeable
interchangeable cross-reference
interchangeable
D76003Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 111571H?
111571H is a PIN,TAPERED,THREADED.
What parts can replace 111571H?
There are 16 known substitutes for 111571H: 50192, 600D16, 328413C and 13 more. Substitute compatibility should be verified for your specific system.
Is 111571H still available?
111571H is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026