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2881547 — NUT,SELF-LOCKING,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2881547: NUT,SELF-LOCKING,ROUND.

The NUT,SELF-LOCKING,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4340 OVERALL, nut_diameter: 2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN, thread_class: 2B, nut_thickness: 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN, thread_series: UN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-390-1868, 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
2881547
NSN: 5310-01-390-1868
FSC: 5310 — Nuts and Washers
CAGE: 3H889 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS (USA)
SPECIFICATIONS
materialSTEEL COMP 4340 OVERALL
nut_diameter2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN
thread_class2B
nut_thickness0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
thread_seriesUN
thread_directionRIGHT-HAND
drive_point_depth0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
surface_treatmentTIN OVERALL
small_end_diameter2.386 INCHES MINIMUM AND 2.406 INCHES MAXIMUM IN
nominal_thread_size1.875 INCHES IN
drive_point_quantity6
thread_quantity_per_inch20
NSN5310-01-390-1868
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2881547 · 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 SERIES: UN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.875 INCHES IN
•
NUT DIAMETER: 2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN
•
DRIVE POINT DEPTH: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
NUT THICKNESS: 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
•
SMALL END DIAMETER: 2.386 INCHES MINIMUM AND 2.406 INCHES MAXIMUM IN
•
SURFACE TREATMENT: TIN OVERALL
TECHNICAL CHARACTERISTICS
THREAD SERIESUN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.875 INCHES IN
NUT DIAMETER2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN
DRIVE POINT DEPTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
NUT THICKNESS0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
SMALL END DIAMETER2.386 INCHES MINIMUM AND 2.406 INCHES MAXIMUM IN
SURFACE TREATMENTTIN OVERALL
DRIVE POINT QUANTITY6
THREAD CLASS2B
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2881547?
2881547 is a NUT,SELF-LOCKING,ROUND.
What is the NSN for 2881547?
2881547 is cataloged in the U.S. Government catalog under NSN 5310-01-390-1868. 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.