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PartsTable / COMPONENT / T20-0129
T20-0129 ✓ 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,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.213 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-838-2025, 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
T20-0129
NSN: 5310-00-838-2025
FSC: 5310
CAGE: 88812 — TAMPO INDUSTRIES INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.213 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.433 INCHES NOMINAL IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch20
NSN5310-00-838-2025
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: T20-0129 · 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
•
BEARING SURFACE TYPE: CHAMFERED
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 20
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
NUT STYLE: HEXAGON
•
WIDTH ACROSS FLATS: 0.433 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
BEARING SURFACE TYPECHAMFERED
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH20
NOMINAL THREAD SIZE0.250 INCHES IN
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.433 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
THREAD DIRECTIONRIGHT-HAND
NUT HEIGHT0.213 INCHES NOMINAL IN
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
RELEASE4802Interchangeable
interchangeable cross-reference
interchangeable
TS2708Interchangeable
interchangeable cross-reference
interchangeable
2N3504Interchangeable
interchangeable cross-reference
interchangeable
5118-103-36Interchangeable
interchangeable cross-reference
interchangeable
832837Interchangeable
interchangeable cross-reference
interchangeable
120375Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T20-0129?
T20-0129 is a NUT,PLAIN,HEXAGON.
What parts can replace T20-0129?
There are 16 known substitutes for T20-0129: RELEASE4802, TS2708, 2N3504 and 13 more. Substitute compatibility should be verified for your specific system.
Is T20-0129 still available?
T20-0129 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