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Technical Data Sheet
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S-48A — PLUNGER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

S-48A: PLUNGER.

The PLUNGER is a the manufacturer industrial component. Key specifications include shape: ROUND, thread_length: 0.380 INCHES NOMINAL IN, overall_length: 0.442 INCHES NOMINAL IN, end_pressure_rating: 1.300 POUNDS NOMINAL LBS, nominal_thread_size: 0.183 INCHES IN, thread_quantity_per_inch: 32. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-900-4444, 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
S-48A
NSN: 5340-00-900-4444
NIINs: 009004444, 010506402
FSC: 5340 — Hardware, Commercial
CAGE: 01226 — HUTCHINSON AEROSPACE & INDUSTRY, INC. DBA VLIER DIV VLIER (USA)
SPECIFICATIONS
shapeROUND
thread_length0.380 INCHES NOMINAL IN
overall_length0.442 INCHES NOMINAL IN
end_pressure_rating1.300 POUNDS NOMINAL LBS
nominal_thread_size0.183 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5340-00-900-4444
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: S-48A 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: 0.380 INCHES NOMINAL IN
•
SHAPE: ROUND
•
NOMINAL THREAD SIZE: 0.183 INCHES IN
•
THREAD QUANTITY PER INCH: 32
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
END PRESSURE RATING: 1.300 POUNDS NOMINAL LBS
TECHNICAL CHARACTERISTICS
THREAD LENGTH0.380 INCHES NOMINAL IN
SHAPEROUND
OVERALL LENGTH0.442 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.183 INCHES IN
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
END PRESSURE RATING1.300 POUNDS NOMINAL LBS
SUBSTITUTES & CROSS-REFERENCES 3
350353Reference document
Same NSN cross-reference
Reference document — Secondary reference
837868Reference document
Same NSN cross-reference
Reference document — Secondary reference
60716203-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 S-48A?
S-48A is a PLUNGER.
What parts can replace S-48A?
There are 3 known substitutes for S-48A: 350353, 837868, 60716203-1. Substitute compatibility should be verified for your specific system.
What is the NSN for S-48A?
S-48A is cataloged in the U.S. Government catalog under NSN 5340-00-900-4444. This indicates validated use in U.S. government and defense supply chains.
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