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Technical Data Sheet
PartsTable / COMPONENT / 1/8S
1/8S ✓ 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 1/8S is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-329-8611, 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
1/8S
NSN: 5340-00-329-8611
FSC: 5340
CAGE: 00613 — USM CORP SUB OF EMHART INDUSTRIES INC MOLLY FASTENER DIV (USA)
SPECIFICATIONS
Part Number1/8S
NSN5340-00-329-8611
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1/8S 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
•
UNIT QUANTITY: 2
•
FASTENER TYPE: SCREW
•
RECESSED DRIVE STYLE: SLOT
•
MATERIAL: STEEL
•
INSERT TYPE FOR WHICH DESIGNED: MACHINE SCREW
•
THREAD PROVISION: THREADED
•
HEAD STYLE: BUTTON
TECHNICAL CHARACTERISTICS (FLIS)
UNIT QUANTITY2
FASTENER TYPESCREW
RECESSED DRIVE STYLESLOT
MATERIALSTEEL
INSERT TYPE FOR WHICH DESIGNEDMACHINE SCREW
OVERALL LENGTH1.281 INCHES NOMINAL IN
THREAD PROVISIONTHREADED
HEAD STYLEBUTTON
STYLE DESIGNATORPLUNGER, DOUBLE EXPANSION
NOMINAL LENGTH1.500 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
11100Upgraded Successor
successor cross-reference
successor
885D052946Upgraded Successor
successor cross-reference
successor
4-SUpgraded Successor
successor cross-reference
successor
10-53809Upgraded Successor
successor cross-reference
successor
TS-4Interchangeable
interchangeable cross-reference
interchangeable
17754002Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1/8S?
1/8S is a 1/8S.
What parts can replace 1/8S?
There are 19 known substitutes for 1/8S: 11100, 885D052946, 4-S and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1/8S?
1/8S is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-329-8611. 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