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21102520-101 — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

21102520-101: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, thread_series: UN, surface_treatment: OXIDE OVERALL, nominal_thread_size: 0.875 INCHES IN, end_item_identification: AN/PAS-13C(V)1,(V)2,(V)3, SIGHT, THERMAL FOR LIGHT, MEDIUM &BHEAVY WEAPONS. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-535-8482, 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
21102520-101
NSN: 5310-01-535-8482
FSC: 5310 — Nuts and Washers
CAGE: 0M2E9 — TROPHIES EXPRESS (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
thread_seriesUN
surface_treatmentOXIDE OVERALL
nominal_thread_size0.875 INCHES IN
end_item_identificationAN/PAS-13C(V)1,(V)2,(V)3, SIGHT, THERMAL FOR LIGHT, MEDIUM &BHEAVY WEAPONS
NSN5310-01-535-8482
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 21102520-101 · 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
•
NOMINAL THREAD SIZE: 0.875 INCHES IN
•
SURFACE TREATMENT: OXIDE OVERALL
•
MATERIAL: STEEL COMP 303 OVERALL
TECHNICAL CHARACTERISTICS
THREAD SERIESUN
NOMINAL THREAD SIZE0.875 INCHES IN
SURFACE TREATMENTOXIDE OVERALL
END ITEM IDENTIFICATIONAN/PAS-13C(V)1,(V)2,(V)3, SIGHT, THERMAL FOR LIGHT, MEDIUM &BHEAVY WEAPONS
MATERIALSTEEL COMP 303 OVERALL
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21102520-101?
21102520-101 is a NUT,PLAIN,ROUND.
What is the NSN for 21102520-101?
21102520-101 is cataloged in the U.S. Government catalog under NSN 5310-01-535-8482. 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.