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6205991 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6205991: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 1.361 INCHES NOMINAL IN, diameter: 0.250 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING OVERALL, thread_class: 2A RIGHT EXTERNAL A, style_designator: LEFT INTERNAL AND RIGHT EXTERNAL THREAD, cross-sectional_shape: HEXAGON. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-327-7919, 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
6205991
NSN: 5340-01-327-7919
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
length1.361 INCHES NOMINAL IN
diameter0.250 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING OVERALL
thread_class2A RIGHT EXTERNAL A
style_designatorLEFT INTERNAL AND RIGHT EXTERNAL THREAD
cross-sectional_shapeHEXAGON
left_projection_length0.360 INCHES NOMINAL IN
right_projection_length0.180 INCHES NOMINAL IN
thread_quantity_per_inch32 RIGHT EXTERNAL
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
right_projection_diameter0.138 INCHES NOMINAL IN
NSN5340-01-327-7919
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6205991 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
•
LENGTH: 1.361 INCHES NOMINAL IN
•
LEFT PROJECTION LENGTH: 0.360 INCHES NOMINAL IN
•
STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT EXTERNAL THREAD
•
DIAMETER: 0.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE: HEXAGON
•
THREAD CLASS: 2A RIGHT EXTERNAL A
•
THREAD QUANTITY PER INCH: 32 RIGHT EXTERNAL
TECHNICAL CHARACTERISTICS
LENGTH1.361 INCHES NOMINAL IN
LEFT PROJECTION LENGTH0.360 INCHES NOMINAL IN
STYLE DESIGNATORLEFT INTERNAL AND RIGHT EXTERNAL THREAD
DIAMETER0.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPEHEXAGON
THREAD CLASS2A RIGHT EXTERNAL A
THREAD CLASS2B LEFT INTERNAL (INCLUDES THRU THREAD)
THREAD QUANTITY PER INCH32 RIGHT EXTERNAL
MATERIALSTEEL CORROSION RESISTING OVERALL
RIGHT PROJECTION DIAMETER0.138 INCHES NOMINAL 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

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 6205991?
6205991 is a STANDOFF,THREADED,SPACING.
What is the NSN for 6205991?
6205991 is cataloged in the U.S. Government catalog under NSN 5340-01-327-7919. 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.