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PartsTable / COMPONENT / FF571TYPEA2
FF571TYPEA2 ✓ 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: 0.273 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-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 5310-00-176-8145, 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
FF571TYPEA2
NSN: 5310-00-176-8145
FSC: 5310
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleHEXAGON
nut_height0.273 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
width_across_flats0.500 INCHES NOMINAL IN
nominal_thread_size0.312 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
thread_quantity_per_inch24
NSN5310-00-176-8145
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: FF571TYPEA2 · 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
•
NUT STYLE: HEXAGON
•
NUT HEIGHT: 0.273 INCHES NOMINAL IN
•
THREAD CLASS: 2B
•
THREAD QUANTITY PER INCH: 24
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
THREAD SERIES: UNF
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
NUT HEIGHT0.273 INCHES NOMINAL IN
THREAD CLASS2B
THREAD QUANTITY PER INCH24
NOMINAL THREAD SIZE0.312 INCHES IN
THREAD SERIESUNF
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
571242Interchangeable
interchangeable cross-reference
interchangeable
FFB571TYPEA2Interchangeable
interchangeable cross-reference
interchangeable
MILB857Interchangeable
interchangeable cross-reference
interchangeable
43-N-3938-4610Interchangeable
interchangeable cross-reference
interchangeable
H114AInterchangeable
interchangeable cross-reference
interchangeable
FFN836GRADEBTYPE3STYLE4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FF571TYPEA2?
FF571TYPEA2 is a NUT,PLAIN,HEXAGON.
What parts can replace FF571TYPEA2?
There are 19 known substitutes for FF571TYPEA2: 571242, FFB571TYPEA2, MILB857 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FF571TYPEA2?
FF571TYPEA2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-176-8145. 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