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3278921 — SEAT POST ASSEMBLY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3278921: SEAT POST ASSEMBLY.

The SEAT POST ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, hole_diameter: 0.437 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN, outside_diameter: 1.000 INCHES NOMINAL IN, style_designator: CONVEX, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.465 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-325-6034, 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
3278921
NSN: 5310-01-325-6034
NIINs: 013256034, 014911407
FSC: 5310 — Nuts and Washers
CAGE: 82577 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
hole_diameter0.437 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
outside_diameter1.000 INCHES NOMINAL IN
style_designatorCONVEX
surface_treatmentPASSIVATE OVERALL
material_thickness0.465 INCHES NOMINAL IN
material_document_and_classificationASTM A582,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationH+4-169,CAGEC 82577 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-325-6034
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3278921 · 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 TREATMENT DOCUMENT AND CLASSIFICATION: H+4-169,CAGEC 82577 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: CONVEX
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.000 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.465 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 303 OVERALL
•
HOLE DIAMETER: 0.437 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONH+4-169,CAGEC 82577 MFR REF SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORCONVEX
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.000 INCHES NOMINAL IN
MATERIAL THICKNESS0.465 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 303 OVERALL
HOLE DIAMETER0.437 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
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 3278921?
3278921 is a SEAT POST ASSEMBLY.
What is the NSN for 3278921?
3278921 is cataloged in the U.S. Government catalog under NSN 5310-01-325-6034. This indicates validated use in U.S. government and defense supply chains.
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