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Technical Data Sheet
PartsTable / COMPONENT / 12Z2012-1
12Z2012-1 ✓ 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 NUT,SELF-LOCKING,WING is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING INSERT, nut_style: WING, thread_class: 2B, body_diameter: 0.375 INCHES NOMINAL IN, thread_series: UNIFIED NATIONAL COARSE (UNC), overall_height: 0.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-596-7155, 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
12Z2012-1
NSN: 5310-00-596-7155
FSC: 5310
CAGE: 94135 — NAVAL ORDNANCE STANDARDS (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON LOCKING INSERT
nut_styleWING
thread_class2B
body_diameter0.375 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
overall_height0.500 INCHES NOMINAL IN
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
wing_spread_width1.031 INCHES NOMINAL IN
fabrication_methodCAST
nominal_thread_size0.190 INCHES IN
thread_quantity_per_inch20
NSN5310-00-596-7155
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12Z2012-1 · 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
•
WING SPREAD WIDTH: 1.031 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-Z-363 COMP A FED SPEC SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 20
•
FABRICATION METHOD: CAST
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT0.500 INCHES NOMINAL IN
WING SPREAD WIDTH1.031 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-Z-363 COMP A FED SPEC SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT
NOMINAL THREAD SIZE0.190 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH20
FABRICATION METHODCAST
THREAD DIRECTIONRIGHT-HAND
MATERIALZINC ALLOY OVERALL EXCEPT INSERT
MATERIALPLASTIC POLYAMIDE NYLON LOCKING INSERT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
53248Interchangeable
interchangeable cross-reference
interchangeable
10148Interchangeable
interchangeable cross-reference
interchangeable
310-RTInterchangeable
interchangeable cross-reference
interchangeable
12676Interchangeable
interchangeable cross-reference
interchangeable
SFP156Interchangeable
interchangeable cross-reference
interchangeable
13097EInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12Z2012-1?
12Z2012-1 is a NUT,SELF-LOCKING,WING.
What parts can replace 12Z2012-1?
There are 10 known substitutes for 12Z2012-1: 53248, 10148, 310-RT and 7 more. Substitute compatibility should be verified for your specific system.
Is 12Z2012-1 still available?
12Z2012-1 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