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123-4403552 PIECE 11 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

123-4403552 PIECE 11: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 1.8750 INCHES NOMINAL IN, diameter: 1.6875 INCHES NOMINAL IN, material: COPPER STANDOFF, thread_class: 2B LEFT INTERNAL (INCLUDES THRU THREAD), thread_length: 0.9375 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN, thread_direction: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD). This part is cataloged in the U.S.

Government catalog under NSN 5340-01-446-2272, 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
123-4403552 PIECE 11
NSN: 5340-01-446-2272
FSC: 5340 — Hardware, Commercial
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
length1.8750 INCHES NOMINAL IN
diameter1.6875 INCHES NOMINAL IN
materialCOPPER STANDOFF
thread_class2B LEFT INTERNAL (INCLUDES THRU THREAD)
thread_length0.9375 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
thread_directionRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
nominal_thread_size1.0000 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
cross-sectional_shapeROUND
thread_quantity_per_inch14 LEFT INTERNAL (INCLUDES THRU THREAD)
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
material_document_and_classificationQQ-C-930 FED SPEC SINGLE MATERIAL RESPONSE STANDOFF
NSN5340-01-446-2272
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 123-4403552 PIECE 11 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: 1.8750 INCHES NOMINAL IN
•
THREAD LENGTH: 0.9375 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-930 FED SPEC SINGLE MATERIAL RESPONSE STANDOFF
•
DIAMETER: 1.6875 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
•
NOMINAL THREAD SIZE: 1.0000 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
•
CROSS-SECTIONAL SHAPE: ROUND
•
THREAD CLASS: 2B LEFT INTERNAL (INCLUDES THRU THREAD)
TECHNICAL CHARACTERISTICS
LENGTH1.8750 INCHES NOMINAL IN
THREAD LENGTH0.9375 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-930 FED SPEC SINGLE MATERIAL RESPONSE STANDOFF
DIAMETER1.6875 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
NOMINAL THREAD SIZE1.0000 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
CROSS-SECTIONAL SHAPEROUND
THREAD CLASS2B LEFT INTERNAL (INCLUDES THRU THREAD)
THREAD QUANTITY PER INCH14 LEFT INTERNAL (INCLUDES THRU THREAD)
MATERIALCOPPER STANDOFF
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 123-4403552 PIECE 11?
123-4403552 PIECE 11 is a STANDOFF,THREADED,SPACING.
What is the NSN for 123-4403552 PIECE 11?
123-4403552 PIECE 11 is cataloged in the U.S. Government catalog under NSN 5340-01-446-2272. 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.