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721170-1 — PLUNGER,QUICK RELEASE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

721170-1: PLUNGER,QUICK RELEASE.

The PLUNGER,QUICK RELEASE is a the manufacturer industrial component. Key specifications include shape: ROUND, thread_length: 0.531 INCHES NOMINAL IN, overall_length: 0.611 INCHES NOMINAL IN, nominal_thread_size: 0.183 INCHES IN, thread_quantity_per_inch: 32, thread_series_designator: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5340-01-273-6967, 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
721170-1
NSN: 5340-01-273-6967
FSC: 5340 — Hardware, Commercial
CAGE: 80422 — WELCH DRILL BUSHING CO (USA)
SPECIFICATIONS
shapeROUND
thread_length0.531 INCHES NOMINAL IN
overall_length0.611 INCHES NOMINAL IN
nominal_thread_size0.183 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5340-01-273-6967
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 721170-1 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: 0.531 INCHES NOMINAL IN
•
SHAPE: ROUND
•
NOMINAL THREAD SIZE: 0.183 INCHES IN
•
THREAD QUANTITY PER INCH: 32
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS
THREAD LENGTH0.531 INCHES NOMINAL IN
SHAPEROUND
OVERALL LENGTH0.611 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.183 INCHES IN
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
SSS49-002-03Reference 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 721170-1?
721170-1 is a PLUNGER,QUICK RELEASE.
What parts can replace 721170-1?
There is 1 known substitute for 721170-1: SSS49-002-03. Substitute compatibility should be verified for your specific system.
What is the NSN for 721170-1?
721170-1 is cataloged in the U.S. Government catalog under NSN 5340-01-273-6967. 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.