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66666-3711 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

66666-3711: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 11.400 MILLIMETERS NOMINAL MM, material: STEEL COMP 303 OVERALL, thread_length: 3.500 MILLIMETERS MINIMUM RIGHT EXTERNAL MM, style_designator: LEFT INTERNAL AND RIGHT EXTERNAL THREAD, surface_treatment: PASSIVATE OVERALL, width_across_flats: 4.770 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-249-1141, 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
66666-3711
NSN: 5340-01-249-1141
FSC: 5340 — Hardware, Commercial
CAGE: 1YGB8 — CAREY MANUFACTURING CO, INC DBA AMATOM ELECTRONIC HARDWARE DIV AMATOM ELECTRONIC HARDWARE (USA)
SPECIFICATIONS
length11.400 MILLIMETERS NOMINAL MM
materialSTEEL COMP 303 OVERALL
thread_length3.500 MILLIMETERS MINIMUM RIGHT EXTERNAL MM
style_designatorLEFT INTERNAL AND RIGHT EXTERNAL THREAD
surface_treatmentPASSIVATE OVERALL
width_across_flats4.770 MILLIMETERS NOMINAL MM
cross-sectional_shapeHEXAGON
material_document_and_classificationASTM A582, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35, TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5340-01-249-1141
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 66666-3711 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: 4.770 MILLIMETERS NOMINAL MM
•
LENGTH: 11.400 MILLIMETERS NOMINAL MM
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35, TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 3.500 MILLIMETERS MINIMUM RIGHT EXTERNAL MM
•
STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT EXTERNAL THREAD
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE: HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS4.770 MILLIMETERS NOMINAL MM
LENGTH11.400 MILLIMETERS NOMINAL MM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35, TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH3.500 MILLIMETERS MINIMUM RIGHT EXTERNAL MM
THREAD LENGTH4.500 MILLIMETERS NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) MM
STYLE DESIGNATORLEFT INTERNAL AND RIGHT EXTERNAL THREAD
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPEHEXAGON
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 303 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
A3013754-1Reference 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 66666-3711?
66666-3711 is a STANDOFF,THREADED,SPACING.
What parts can replace 66666-3711?
There is 1 known substitute for 66666-3711: A3013754-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 66666-3711?
66666-3711 is cataloged in the U.S. Government catalog under NSN 5340-01-249-1141. 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.