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Technical Data Sheet

201645A — Technical Data Sheet

✓ 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: 0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNF, 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 under NSN 5310-00-011-0812, 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
201645A
NSN: 5310-00-011-0812
FSC: 5310
CAGE: 1ML14 — BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNF
thread_directionLEFT-HAND
width_across_flats0.4280 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
thread_quantity_per_inch28
nondefinitive_spec/std_dataA TYPE
NSN5310-00-011-0812
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 201645A · 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: 2B
•
THREAD SERIES: UNF
•
THREAD QUANTITY PER INCH: 28
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
NONDEFINITIVE SPEC/STD DATA: A TYPE
•
MATERIAL: STEEL OVERALL
•
WIDTH ACROSS FLATS: 0.4280 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
THREAD CLASS2B
THREAD SERIESUNF
THREAD QUANTITY PER INCH28
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
NOMINAL THREAD SIZE0.250 INCHES IN
NONDEFINITIVE SPEC/STD DATAA TYPE
MATERIALSTEEL OVERALL
WIDTH ACROSS FLATS0.4280 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
NUT STYLEHEXAGON
NUT HEIGHT0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
1108-12InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
2024400180InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
2024305651InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
110809InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
FFB571TYPEAInterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 201645A?
201645A is a NUT,PLAIN,HEXAGON.
What parts can replace 201645A?
There are 5 known substitutes for 201645A: 1108-12, 2024400180, 2024305651 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 201645A?
201645A is cataloged in the Federal Logistics Information System under NSN 5310-00-011-0812. This indicates validated use in U.S. government and defense supply chains.
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