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1818217 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1818217: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 2.860 INCHES MINIMUM AND 2.860 INCHES MINIMUM AND 2.890 INCHES MAXIMUM2.890 INCHES MAXIMUM IN, material: STEEL COMP 303 OVERALLSTEEL COMP 303 OVERALL, thread_length: 0.380 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD)0.380 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN, style_designator: LEFT INTERNAL THREADLEFT INTERNAL THREAD, surface_treatment: PASSIVATE OVERALLPASSIVATE OVERALL, width_across_flats: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-085-6833, 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
1818217
NSN: 5340-01-085-6833
FSC: 5340 — Hardware, Commercial
CAGE: 03956 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
length2.860 INCHES MINIMUM AND 2.860 INCHES MINIMUM AND 2.890 INCHES MAXIMUM2.890 INCHES MAXIMUM IN
materialSTEEL COMP 303 OVERALLSTEEL COMP 303 OVERALL
thread_length0.380 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD)0.380 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
style_designatorLEFT INTERNAL THREADLEFT INTERNAL THREAD
surface_treatmentPASSIVATE OVERALLPASSIVATE OVERALL
width_across_flats0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
cross-sectional_shapeSQUARESQUARE
distance_between_hole_centers1.600 INCHES NOMINAL1.600 INCHES NOMINAL IN
distance_from_end_to_hole_center0.119 INCHES NOMINAL0.119 INCHES NOMINAL IN
hole_quantity_perpendicular_to_axis22
material_document_and_classificationASTM A582, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE OVERALLASTM A582, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5340-01-085-6833
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1818217 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: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
•
LENGTH: 2.860 INCHES MINIMUM AND 2.860 INCHES MINIMUM AND 2.890 INCHES MAXIMUM2.890 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
DISTANCE BETWEEN HOLE CENTERS: 1.600 INCHES NOMINAL1.600 INCHES NOMINAL IN
•
THREAD LENGTH: 0.380 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD)0.380 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
•
STYLE DESIGNATOR: LEFT INTERNAL THREADLEFT INTERNAL THREAD
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE OVERALLASTM A582, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE: SQUARESQUARE
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
LENGTH2.860 INCHES MINIMUM AND 2.860 INCHES MINIMUM AND 2.890 INCHES MAXIMUM2.890 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
DISTANCE BETWEEN HOLE CENTERS1.600 INCHES NOMINAL1.600 INCHES NOMINAL IN
THREAD LENGTH0.380 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD)0.380 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
STYLE DESIGNATORLEFT INTERNAL THREADLEFT INTERNAL THREAD
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE OVERALLASTM A582, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPESQUARESQUARE
SURFACE TREATMENTPASSIVATE OVERALLPASSIVATE OVERALL
DISTANCE FROM END TO HOLE CENTER0.119 INCHES NOMINAL0.119 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1818217?
1818217 is a STANDOFF,THREADED,SPACING.
What is the NSN for 1818217?
1818217 is cataloged in the U.S. Government catalog under NSN 5340-01-085-6833. 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.