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Technical Data Sheet
A-326 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include material: STEEL COMP 302 OR STEEL COMP 303S OR STEEL COMP 303SE OR STEEL COMP 316 OR STEEL CORROSION RESISTING OVERALL, body_width: 2.375 INCHES NOMINAL IN, body_height: 1.688 INCHES NOMINAL IN, body_length: 2.500 INCHES NOMINAL IN, first_end_style: CHAMFERED, special_features: SEE COMPONENTS LIST FOR MMS A326. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-111-0723, 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
MRO MRO_GENERAL A-326
NSN: 5330-00-111-0723
FSC: 5330
CAGE: 31922 — LEEDS AND NORTHRUP CO A UNIT OF GENERAL SIGNAL CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OR STEEL COMP 303S OR STEEL COMP 303SE OR STEEL COMP 316 OR STEEL CORROSION RESISTING OVERALL
body_width2.375 INCHES NOMINAL IN
body_height1.688 INCHES NOMINAL IN
body_length2.500 INCHES NOMINAL IN
first_end_styleCHAMFERED
special_featuresSEE COMPONENTS LIST FOR MMS A326
surface_treatmentPASSIVATE OVERALL
pin_overall_length2.610 INCHES MINIMUM AND 2.630 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
pin_overall_diameter0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN
first_end_taper_angle45.0 DEGREES NOMINAL
first_end_taper_length0.030 INCHES NOMINAL IN
NSN5330-00-111-0723
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A-326 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
KEY FEATURES
SUPPLEMENTARY FEATURES: CROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
TECHNICAL CHARACTERISTICS (FLIS)
SUPPLEMENTARY FEATURESCROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
SPECIAL FEATURESSTYLE DESIGNATOR:NO.60 IRREGULAR SHAPE FROM FIIG A03200
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
CD297Interchangeable
interchangeable cross-reference
interchangeable
HC333-AInterchangeable
interchangeable cross-reference
interchangeable
103726-37Interchangeable
interchangeable cross-reference
interchangeable
A3-26Interchangeable
interchangeable cross-reference
interchangeable
910995Interchangeable
interchangeable cross-reference
interchangeable
42-F-05Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-326?
A-326 is a FILTER,RADIO FREQUENCY INTERFERE. It is classified as a MRO (MRO_GENERAL).
What parts can replace A-326?
There are 13 known substitutes for A-326: CD297, HC333-A, 103726-37 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A-326?
A-326 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-111-0723. This indicates validated use in U.S. government and defense supply chains.
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