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863-000743 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

863-000743: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 3.250 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING OVERALL, style_designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS, thread_direction: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD), surface_treatment: PASSIVATE OVERALL, width_across_flats: 0.312 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-493-5368, 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
863-000743
NSN: 5340-01-493-5368
FSC: 5340 — Hardware, Commercial
CAGE: 4X630 — GUILD ASSOCIATES INC (USA)
SPECIFICATIONS
length3.250 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING OVERALL
style_designatorLEFT INTERNAL AND RIGHT INTERNAL THREADS
thread_directionRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
surface_treatmentPASSIVATE OVERALL
width_across_flats0.312 INCHES NOMINAL IN
cross-sectional_shapeHEXAGON
end_item_identificationCONTRACTOR LOGISTIC SUPPORT MODEL M871, 30-FOOT TRAILER, LAUNDRY ADVANCED SYATEM (LADDS), NSN 2330-00-122-6779 CONTRACT DAAK60-97-C-9222 TM 9-3510-122-24P
NSN5340-01-493-5368
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 863-000743 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: 0.312 INCHES NOMINAL IN
•
LENGTH: 3.250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT INTERNAL THREADS
•
THREAD DIRECTION: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
•
CROSS-SECTIONAL SHAPE: HEXAGON
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.312 INCHES NOMINAL IN
LENGTH3.250 INCHES NOMINAL IN
STYLE DESIGNATORLEFT INTERNAL AND RIGHT INTERNAL THREADS
THREAD DIRECTIONRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
THREAD DIRECTIONRIGHT-HAND RIGHT INTERNAL
CROSS-SECTIONAL SHAPEHEXAGON
SURFACE TREATMENTPASSIVATE OVERALL
END ITEM IDENTIFICATIONCONTRACTOR LOGISTIC SUPPORT MODEL M871, 30-FOOT TRAILER, LAUNDRY ADVANCED SYATEM (LADDS), NSN 2330-00-122-6779 CONTRACT DAAK60-97-C-9222 TM 9-3510-122-24P
MATERIALSTEEL CORROSION RESISTING OVERALL
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
LYSS6995-3.250-01Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 863-000743?
863-000743 is a STANDOFF,THREADED,SPACING.
What parts can replace 863-000743?
There is 1 known substitute for 863-000743: LYSS6995-3.250-01. Substitute compatibility should be verified for your specific system.
What is the NSN for 863-000743?
863-000743 is cataloged in the U.S. Government catalog under NSN 5340-01-493-5368. 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.