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NS52 — SWITCH,SAFETY,NEUTRAL START

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

NS52: SWITCH,SAFETY,NEUTRAL START.

The SWITCH,SAFETY,NEUTRAL START is a the manufacturer industrial component. Key specifications include shape: ROUND, thread_length: 0.625 INCHES NOMINAL IN, overall_length: 0.719 INCHES NOMINAL IN, end_pressure_rating: 5.000 POUNDS NOMINAL LBS, nominal_thread_size: 0.164 INCHES IN, end_item_identification: GMC LIGHT DUTY TRUCK 73-78. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-784-2096, 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
NS52
NSN: 5340-00-784-2096
NIINs: 007842096, 011658212
FSC: 5340 — Hardware, Commercial
CAGE: 01226 — HUTCHINSON AEROSPACE & INDUSTRY, INC. DBA VLIER DIV VLIER (USA)
SPECIFICATIONS
shapeROUND
thread_length0.625 INCHES NOMINAL IN
overall_length0.719 INCHES NOMINAL IN
end_pressure_rating5.000 POUNDS NOMINAL LBS
nominal_thread_size0.164 INCHES IN
end_item_identificationGMC LIGHT DUTY TRUCK 73-78
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5340-00-784-2096
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: NS52 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: 0.625 INCHES NOMINAL IN
•
SHAPE: ROUND
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
•
THREAD QUANTITY PER INCH: 32
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
END PRESSURE RATING: 5.000 POUNDS NOMINAL LBS
TECHNICAL CHARACTERISTICS
THREAD LENGTH0.625 INCHES NOMINAL IN
SHAPEROUND
OVERALL LENGTH0.719 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.164 INCHES IN
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
END PRESSURE RATING5.000 POUNDS NOMINAL LBS
SUBSTITUTES & CROSS-REFERENCES 1
10312589Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 NS52?
NS52 is a SWITCH,SAFETY,NEUTRAL START.
What parts can replace NS52?
There is 1 known substitute for NS52: 10312589. Substitute compatibility should be verified for your specific system.
What is the NSN for NS52?
NS52 is cataloged in the U.S. Government catalog under NSN 5340-00-784-2096. 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.