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3271787 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3271787: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include thread_series: UNF, locking_feature: PREVAILING TORQUE WITH NONMETALLIC INSERT, special_features: MATL CARBON STEEL,STYLE NUT,NYLON LOCK, thread_direction: RIGHT-HAND, end_item_identification: 2320-01-465-2174, material_document_and_classification: ANSI/ASME B18.2.1 ASSN STD SINGLE MATERIAL RESPONSE LOCKING INSERT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-478-7212, 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
3271787
NSN: 5310-01-478-7212
FSC: 5310 — Nuts and Washers
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
thread_seriesUNF
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
special_featuresMATL CARBON STEEL,STYLE NUT,NYLON LOCK
thread_directionRIGHT-HAND
end_item_identification2320-01-465-2174
material_document_and_classificationANSI/ASME B18.2.1 ASSN STD SINGLE MATERIAL RESPONSE LOCKING INSERT
NSN5310-01-478-7212
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3271787 · 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: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: ANSI/ASME B18.2.1 ASSN STD SINGLE MATERIAL RESPONSE LOCKING INSERT
•
THREAD DIRECTION: RIGHT-HAND
•
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
TECHNICAL CHARACTERISTICS
THREAD SERIESUNF
MATERIAL DOCUMENT AND CLASSIFICATIONANSI/ASME B18.2.1 ASSN STD SINGLE MATERIAL RESPONSE LOCKING INSERT
THREAD DIRECTIONRIGHT-HAND
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
SPECIAL FEATURESMATL CARBON STEEL,STYLE NUT,NYLON LOCK
END ITEM IDENTIFICATION2320-01-465-2174
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 3271787?
3271787 is a NUT,SELF-LOCKING,HEXAGON.
What is the NSN for 3271787?
3271787 is cataloged in the U.S. Government catalog under NSN 5310-01-478-7212. 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.