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1988AS1174 — CAP-PLUG,PROTECTIVE,DUST AND MOI

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1988AS1174: CAP-PLUG,PROTECTIVE,DUST AND MOI.

CAP-PLUG,PROTECTIVE,DUST AND MOI. Key specifications include material: STEEL, special_features: THE ITEM IS MADE TOASTM-A-519, GRADE 4130, open_end_inside_diameter: 4.2350 MILLIMETERS NOMINAL MM, closed_end_overall_diameter: 4.5000 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-460-1347, 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
1988AS1174
NSN: 5340-01-460-1347
FSC: 5340 — Hardware, Commercial
CAGE: 072E5 — VERTEX MODERNIZATION AND SUSTAINMENT LLC (USA)
SPECIFICATIONS
materialSTEEL
special_featuresTHE ITEM IS MADE TOASTM-A-519, GRADE 4130
open_end_inside_diameter4.2350 MILLIMETERS NOMINAL MM
closed_end_overall_diameter4.5000 MILLIMETERS NOMINAL MM
NSN5340-01-460-1347
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1988AS1174 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
•
CLOSED END OVERALL DIAMETER: 4.5000 MILLIMETERS NOMINAL MM
•
OPEN END INSIDE DIAMETER: 4.2350 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
CLOSED END OVERALL DIAMETER4.5000 MILLIMETERS NOMINAL MM
SPECIAL FEATURESTHE ITEM IS MADE TOASTM-A-519, GRADE 4130
OPEN END INSIDE DIAMETER4.2350 MILLIMETERS NOMINAL MM
MATERIALSTEEL
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

No substitute or cross-reference records for this part.

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 1988AS1174?
1988AS1174 is a CAP-PLUG,PROTECTIVE,DUST AND MOI.
What is the NSN for 1988AS1174?
1988AS1174 is cataloged in the U.S. Government catalog under NSN 5340-01-460-1347. 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.