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91115A343 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

91115A343: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 1.995 INCHES MINIMUM AND 2.005 INCHES MAXIMUM IN, material: STEEL CORROSION RESISTING STANDOFF, thread_class: 2B RIGHT INTERNAL, thread_length: 0.500 INCHES MINIMUM RIGHT INTERNAL IN, style_designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS, thread_direction: RIGHT-HAND RIGHT INTERNAL. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-523-7530, 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
91115A343
NSN: 5340-01-523-7530
FSC: 5340 — Hardware, Commercial
CAGE: 2V507 — MCMASTER-CARR SUPPLY COMPANY (USA)
SPECIFICATIONS
length1.995 INCHES MINIMUM AND 2.005 INCHES MAXIMUM IN
materialSTEEL CORROSION RESISTING STANDOFF
thread_class2B RIGHT INTERNAL
thread_length0.500 INCHES MINIMUM RIGHT INTERNAL IN
style_designatorLEFT INTERNAL AND RIGHT INTERNAL THREADS
thread_directionRIGHT-HAND RIGHT INTERNAL
width_across_flats0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
nominal_thread_size0.1900 INCHES RIGHT INTERNAL IN
cross-sectional_shapeHEXAGON
thread_quantity_per_inch32 RIGHT INTERNAL
thread_series_designatorUNF RIGHT INTERNAL
material_document_and_classification18-8 STAINLESS STEEL MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5340-01-523-7530
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 91115A343 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
•
WIDTH ACROSS FLATS: 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
•
LENGTH: 1.995 INCHES MINIMUM AND 2.005 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.500 INCHES MINIMUM RIGHT INTERNAL IN
•
STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT INTERNAL THREADS
•
MATERIAL DOCUMENT AND CLASSIFICATION: 18-8 STAINLESS STEEL MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
LENGTH1.995 INCHES MINIMUM AND 2.005 INCHES MAXIMUM IN
THREAD LENGTH0.500 INCHES MINIMUM RIGHT INTERNAL IN
THREAD LENGTH0.500 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
STYLE DESIGNATORLEFT INTERNAL AND RIGHT INTERNAL THREADS
MATERIAL DOCUMENT AND CLASSIFICATION18-8 STAINLESS STEEL MFR REF SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
THREAD DIRECTIONRIGHT-HAND RIGHT INTERNAL
NOMINAL THREAD SIZE0.1900 INCHES RIGHT INTERNAL IN
NOMINAL THREAD SIZE0.1900 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
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 1
91115A700Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 91115A343?
91115A343 is a STANDOFF,THREADED,SPACING.
What parts can replace 91115A343?
There is 1 known substitute for 91115A343: 91115A700. Substitute compatibility should be verified for your specific system.
What is the NSN for 91115A343?
91115A343 is cataloged in the U.S. Government catalog under NSN 5340-01-523-7530. 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.