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2571619 — NUT,PLAIN,EXTENDED WASHER,DOUBLE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2571619: NUT,PLAIN,EXTENDED WASHER,DOUBLE.

NUT,PLAIN,EXTENDED WASHER,DOUBLE. Key specifications include material: STEEL OVERALL, nut_style: DOUBLE HEXAGON, thread_class: 3B, thread_series: UNF, overall_height: 1.620 INCHES NOMINAL IN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-056-3336, 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
2571619
NSN: 5310-00-056-3336
FSC: 5310 — Nuts and Washers
CAGE: 55284 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL DIV AEROSPACE-SOUTH BEND (WESTMOOR ST) (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleDOUBLE HEXAGON
thread_class3B
thread_seriesUNF
overall_height1.620 INCHES NOMINAL IN
thread_directionRIGHT-HAND
washer_thickness0.375 INCHES NOMINAL IN
width_across_flats1.808 INCHES NOMINAL IN
nominal_thread_size1.500 INCHES IN
washer_outside_diameter2.490 INCHES NOMINAL IN
thread_quantity_per_inch12
NSN5310-00-056-3336
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2571619 · 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
•
WASHER OUTSIDE DIAMETER: 2.490 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 1.808 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
WASHER THICKNESS: 0.375 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.500 INCHES IN
•
NUT STYLE: DOUBLE HEXAGON
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.620 INCHES NOMINAL IN
WASHER OUTSIDE DIAMETER2.490 INCHES NOMINAL IN
WIDTH ACROSS FLATS1.808 INCHES NOMINAL IN
THREAD SERIESUNF
WASHER THICKNESS0.375 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.500 INCHES IN
NUT STYLEDOUBLE HEXAGON
THREAD CLASS3B
THREAD QUANTITY PER INCH12
SUBSTITUTES & CROSS-REFERENCES 2
53-41441-3Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
1669-88Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2571619?
2571619 is a NUT,PLAIN,EXTENDED WASHER,DOUBLE.
What parts can replace 2571619?
There are 2 known substitutes for 2571619: 53-41441-3, 1669-88. Substitute compatibility should be verified for your specific system.
What is the NSN for 2571619?
2571619 is cataloged in the U.S. Government catalog under NSN 5310-00-056-3336. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.