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40328-6 — INSULATION,THERMAL,SPECIAL PURPO

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

40328-6: INSULATION,THERMAL,SPECIAL PURPO.

INSULATION,THERMAL,SPECIAL PURPO. Key specifications include head_style: BEVEL-CONICAL, head_height: 0.140 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.298 INCHES MINIMUM AND 0.301 INCHES MAXIMUM IN, thread_length: 0.141 INCHES NOMINAL IN, screw_material: STEEL. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-435-6250, 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
40328-6
NSN: 5330-00-435-6250
NIINs: 004356250, 010990333
FSC: 5330 — Packing and Gasket Materials
CAGE: 70628 — ARROWHEAD PRODUCTS CORP (USA)
SPECIFICATIONS
head_styleBEVEL-CONICAL
head_height0.140 INCHES NOMINAL IN
thread_class2A A
head_diameter0.298 INCHES MINIMUM AND 0.301 INCHES MAXIMUM IN
thread_length0.141 INCHES NOMINAL IN
screw_materialSTEEL
fastener_length0.156 INCHES NOMINAL IN
hardness_rating68.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 85.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.112 INCHES IN
screw_surface_treatmentOXIDE
NSN5330-00-435-6250
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 40328-6 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESINNER AND OUTER SKIN
SUBSTITUTES & CROSS-REFERENCES 1
216-76400-6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementDemilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 40328-6?
40328-6 is a INSULATION,THERMAL,SPECIAL PURPO.
What parts can replace 40328-6?
There is 1 known substitute for 40328-6: 216-76400-6. Substitute compatibility should be verified for your specific system.
What is the NSN for 40328-6?
40328-6 is cataloged in the U.S. Government catalog under NSN 5330-00-435-6250. 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.