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Technical Data Sheet
PartsTable / MRO / B1266
B1266 ✓ 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

The FILTER,BAND PASS is a the manufacturer industrial component. Key specifications include width: 1.031 INCHES NOMINAL IN, height: 0.421 INCHES NOMINAL IN, material: STEEL OVERALL, body_width: 3.000 INCHES NOMINAL IN, body_height: 3.125 INCHES MAXIMUM IN, body_length: 4.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-205-5152, 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→ B1266
NSN: 5340-00-205-5152
FSC: 5340
CAGE: 02077 — MILLER-HOLZWARTH INC. (USA)
SPECIFICATIONS
width1.031 INCHES NOMINAL IN
height0.421 INCHES NOMINAL IN
materialSTEEL OVERALL
body_width3.000 INCHES NOMINAL IN
body_height3.125 INCHES MAXIMUM IN
body_length4.500 INCHES NOMINAL IN
design_typeLOOP ENGAGING
tongue_width0.812 INCHES NOMINAL IN
hole_diameter0.218 INCHES NOMINAL IN
hole_quantity2
inclosure_typeENCASED
overall_height3.565 INCHES NOMINAL IN
NSN5340-00-205-5152
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B1266 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
•
HEIGHT: 0.421 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
STYLE DESIGNATOR: LEVER
•
CATCH STRIKE STYLE: MORTISE
•
SURFACE HOLE QUANTITY: 2
•
DESIGN TYPE: LOOP ENGAGING
•
WIDTH: 1.031 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HEIGHT0.421 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
STYLE DESIGNATORLEVER
CATCH STRIKE STYLEMORTISE
SURFACE HOLE QUANTITY2
DESIGN TYPELOOP ENGAGING
OVERALL LENGTH1.000 INCHES NOMINAL IN
WIDTH1.031 INCHES NOMINAL IN
TONGUE WIDTH0.812 INCHES NOMINAL IN
HOLE QUANTITY2
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
373M0063P002Upgraded Successor
successor cross-reference
successor
15641Upgraded Successor
successor cross-reference
successor
S641US2GUpgraded Successor
successor cross-reference
successor
ASC1529651Interchangeable
interchangeable cross-reference
interchangeable
156/41Interchangeable
interchangeable cross-reference
interchangeable
2-AP-8-BS PC41Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B1266?
B1266 is a FILTER,BAND PASS. It is classified as a MRO (MRO_GENERAL).
What parts can replace B1266?
There are 19 known substitutes for B1266: 373M0063P002, 15641, S641US2G and 16 more. Substitute compatibility should be verified for your specific system.
Is B1266 still available?
B1266 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026