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TA1C1-21 ✓ 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: COPPER ALLOY OVERALL, nut_style: HEXAGON, nut_height: 0.500 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNS, thread_direction: LEFT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-266-0475, 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
TA1C1-21
NSN: 5310-00-266-0475
FSC: 5310
CAGE: 72617 — BLACK AND DECKER /US/ INC DEWALT DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleHEXAGON
nut_height0.500 INCHES NOMINAL IN
thread_class2B
thread_seriesUNS
thread_directionLEFT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats1.625 INCHES NOMINAL IN
nominal_thread_size1.000 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch14
NSN5310-00-266-0475
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: TA1C1-21 · 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 QUANTITY PER INCH: 14
•
THREAD SERIES: UNS
•
BEARING SURFACE TYPE: WASHER FACED
•
NOMINAL THREAD SIZE: 1.000 INCHES IN
•
MATERIAL: COPPER ALLOY OVERALL
•
THREAD DIRECTION: LEFT-HAND
•
SURFACE TREATMENT: CADMIUM OVERALL
•
WIDTH ACROSS FLATS: 1.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH14
THREAD SERIESUNS
BEARING SURFACE TYPEWASHER FACED
NOMINAL THREAD SIZE1.000 INCHES IN
MATERIALCOPPER ALLOY OVERALL
THREAD DIRECTIONLEFT-HAND
SURFACE TREATMENTCADMIUM OVERALL
WIDTH ACROSS FLATS1.625 INCHES NOMINAL IN
NUT HEIGHT0.500 INCHES NOMINAL IN
NUT STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
81433Interchangeable
interchangeable cross-reference
interchangeable
7651Interchangeable
interchangeable cross-reference
interchangeable
470A000-5Interchangeable
interchangeable cross-reference
interchangeable
470A000-6Interchangeable
interchangeable cross-reference
interchangeable
8E7015Interchangeable
interchangeable cross-reference
interchangeable
7851Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TA1C1-21?
TA1C1-21 is a NUT,PLAIN,HEXAGON.
What parts can replace TA1C1-21?
There are 15 known substitutes for TA1C1-21: 81433, 7651, 470A000-5 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for TA1C1-21?
TA1C1-21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-266-0475. 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