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190971 — PLUG,PROTECTIVE,DUST AND MOISTUR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

190971: PLUG,PROTECTIVE,DUST AND MOISTUR.

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: PLASTIC, drive_type: HEX HEAD, design_type: THREADED, thread_class: 3A A, overall_diameter: 1.062 INCHES NOMINAL IN, features_provided: SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-877-5450, 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
190971
NSN: 5340-00-877-5450
FSC: 5340 — Hardware, Commercial
CAGE: 66503 — WOODWARD, INC. DIV FUEL SYSTEMS AND CONTROLS (USA)
SPECIFICATIONS
materialPLASTIC
drive_typeHEX HEAD
design_typeTHREADED
thread_class3A A
overall_diameter1.062 INCHES NOMINAL IN
features_providedSHOULDER
thread_size_and_series/type_designator7/8-14 UNF
NSN5340-00-877-5450
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 190971 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
•
DESIGN TYPE: THREADED
•
OVERALL DIAMETER: 1.062 INCHES NOMINAL IN
•
DRIVE TYPE: HEX HEAD
•
FEATURES PROVIDED: SHOULDER
•
THREAD CLASS: 3A A
•
MATERIAL: PLASTIC
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 7/8-14 UNF
TECHNICAL CHARACTERISTICS
DESIGN TYPETHREADED
OVERALL DIAMETER1.062 INCHES NOMINAL IN
DRIVE TYPEHEX HEAD
FEATURES PROVIDEDSHOULDER
THREAD CLASS3A A
MATERIALPLASTIC
THREAD SIZE AND SERIES/TYPE DESIGNATOR7/8-14 UNF
SUBSTITUTES & CROSS-REFERENCES 2
1604-88YReference document
Same NSN cross-reference
Reference document — Design control — primary reference
MP-88Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 190971?
190971 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace 190971?
There are 2 known substitutes for 190971: 1604-88Y, MP-88. Substitute compatibility should be verified for your specific system.
What is the NSN for 190971?
190971 is cataloged in the U.S. Government catalog under NSN 5340-00-877-5450. 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.