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91731A054 — THREADED INSERT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

91731A054: THREADED INSERT.

The THREADED INSERT is a the manufacturer industrial component. Key specifications include material: STEEL, overall_length: 0.500 INCHES NOMINAL IN, special_features: INTERNAL THREAD 3/8 INCH - 16; EXTERNAL THREAD/TAP SIZE 9/16 INCH - 12; INSERT LENGTH 1/2 INCH; DRILL SIZE 33/64 INCH IN, end_item_identification: AN/AQS-20A MAINTENANCE STAND A, part_name_assigned_by_controlling_agency: INSERT, KEY LOCKING. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-529-5288, 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
91731A054
NSN: 5340-01-529-5288
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL
overall_length0.500 INCHES NOMINAL IN
special_featuresINTERNAL THREAD 3/8 INCH - 16; EXTERNAL THREAD/TAP SIZE 9/16 INCH - 12; INSERT LENGTH 1/2 INCH; DRILL SIZE 33/64 INCH IN
end_item_identificationAN/AQS-20A MAINTENANCE STAND A
part_name_assigned_by_controlling_agencyINSERT, KEY LOCKING
NSN5340-01-529-5288
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 91731A054 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
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
OVERALL LENGTH0.500 INCHES NOMINAL IN
SPECIAL FEATURESINTERNAL THREAD 3/8 INCH - 16; EXTERNAL THREAD/TAP SIZE 9/16 INCH - 12; INSERT LENGTH 1/2 INCH; DRILL SIZE 33/64 INCH IN
PART NAME ASSIGNED BY CONTROLLING AGENCYINSERT, KEY LOCKING
END ITEM IDENTIFICATIONAN/AQS-20A MAINTENANCE STAND A
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 91731A054?
91731A054 is a THREADED INSERT.
What is the NSN for 91731A054?
91731A054 is cataloged in the U.S. Government catalog under NSN 5340-01-529-5288. 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.