PartsTable
Technical Data Sheet
PartsTable / COMPONENT / BPN-1A
BPN-1A ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The PLUNGER,QUICK RELEASE is a the manufacturer industrial component. Key specifications include shape: ROUND, thread_length: 0.375 INCHES NOMINAL IN, overall_length: 0.437 INCHES NOMINAL IN, nominal_thread_size: 0.183 INCHES IN, thread_quantity_per_inch: 32, thread_series_designator: UNIFIED NATIONAL COARSE (UNC). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-109-3347, 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
BPN-1A
NSN: 5340-01-109-3347
FSC: 5340
CAGE: 96207 — R T E CORP (USA)
SPECIFICATIONS
shapeROUND
thread_length0.375 INCHES NOMINAL IN
overall_length0.437 INCHES NOMINAL IN
nominal_thread_size0.183 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5340-01-109-3347
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BPN-1A 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
•
THREAD LENGTH: 0.375 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 32
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
SHAPE: ROUND
•
NOMINAL THREAD SIZE: 0.183 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.375 INCHES NOMINAL IN
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SHAPEROUND
OVERALL LENGTH0.437 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.183 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
K888402-2Interchangeable
interchangeable cross-reference
interchangeable
CJA49391Interchangeable
interchangeable cross-reference
interchangeable
33-59Interchangeable
interchangeable cross-reference
interchangeable
KS1885Interchangeable
interchangeable cross-reference
interchangeable
033-0102-0001Interchangeable
interchangeable cross-reference
interchangeable
3310-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BPN-1A?
BPN-1A is a PLUNGER,QUICK RELEASE.
What parts can replace BPN-1A?
There are 11 known substitutes for BPN-1A: K888402-2, CJA49391, 33-59 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BPN-1A?
BPN-1A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-109-3347. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026