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276-3421 — GASKET SET

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

276-3421: GASKET SET.

The GASKET SET is a the manufacturer industrial component. Key specifications include special_features: SET CONSISTS OF 8 SEALS;4 INLET SEALS P/N 252-6438, AND 4 EXHUST SEALS P/N 254-3954, end_item_identification: C4.4 MARINE DIESEL ENGINE, part_name_assigned_by_controlling_agency: GASKET SET. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-726-3687, 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
276-3421
NSN: 5310-00-726-3687
NIINs: 007263687, 016948603
FSC: 5310 — Nuts and Washers
CAGE: 65597 — THALES USA, INC. DIV AIR MOBILITY SOLUTIONS ("AMS") (USA)
SPECIFICATIONS
special_featuresSET CONSISTS OF 8 SEALS;4 INLET SEALS P/N 252-6438, AND 4 EXHUST SEALS P/N 254-3954
component_quantity8
end_item_identificationC4.4 MARINE DIESEL ENGINE
part_name_assigned_by_controlling_agencyGASKET SET
NSN5310-00-726-3687
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 276-3421 · 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
•
SURFACE FINISH: 63.0 MICROINCHES ALL SURFACES
•
OVERALL DIAMETER: 0.218 INCHES NOMINAL IN
•
HEAT TREATMENT: AS FABRICATED
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES ALL SURFACES
OVERALL DIAMETER0.218 INCHES NOMINAL IN
HEAT TREATMENTAS FABRICATED
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTPASSIVATE OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL CORROSION RESISTING OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.129 INCHES NOMINAL IN
THICKNESS0.031 INCHES MINIMUM AND 0.033 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
19207Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
202-11-95Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 276-3421?
276-3421 is a GASKET SET.
What parts can replace 276-3421?
There are 2 known substitutes for 276-3421: 19207, 202-11-95. Substitute compatibility should be verified for your specific system.
What is the NSN for 276-3421?
276-3421 is cataloged in the U.S. Government catalog under NSN 5310-00-726-3687. 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.