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K4-SN — PLUNGER,DETENT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

K4-SN: PLUNGER,DETENT.

The PLUNGER,DETENT is a the manufacturer industrial component. Key specifications include length: 0.646 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, diameter: 0.312 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, material: STEEL OVERALL, special_features: 18UNC EXT. THD,0.522 IN.

LGTH;0.135 IN. I.D. IN.

This part is cataloged in the U.S. Government catalog under NSN 5340-01-331-5008, 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
K4-SN
NSN: 5340-01-331-5008
FSC: 5340 — Hardware, Commercial
CAGE: 01599 — REID SUPPLY COMPANY (USA)
SPECIFICATIONS
length0.646 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
diameter0.312 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
materialSTEEL OVERALL
special_features18UNC EXT. THD,0.522 IN. LGTH;0.135 IN. I.D. IN
NSN5340-01-331-5008
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: K4-SN 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
•
LENGTH: 0.646 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
DIAMETER: 0.312 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
LENGTH0.646 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
DIAMETER0.312 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
SPECIAL FEATURES18UNC EXT. THD,0.522 IN. LGTH;0.135 IN. I.D. IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
116386Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
116386-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is K4-SN?
K4-SN is a PLUNGER,DETENT.
What parts can replace K4-SN?
There are 2 known substitutes for K4-SN: 116386, 116386-2. Substitute compatibility should be verified for your specific system.
What is the NSN for K4-SN?
K4-SN is cataloged in the U.S. Government catalog under NSN 5340-01-331-5008. 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.