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5816644 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5816644: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 0.898 INCHES NOMINAL IN, material: STEEL OVERALL, thread_class: 2A RIGHT EXTERNAL A, style_designator: LEFT INTERNAL AND RIGHT EXTERNAL THREAD, width_across_flats: 0.188 INCHES NOMINAL IN, nominal_thread_size: 0.112 INCHES RIGHT EXTERNAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-328-2006, 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
5816644
NSN: 5340-01-328-2006
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
length0.898 INCHES NOMINAL IN
materialSTEEL OVERALL
thread_class2A RIGHT EXTERNAL A
style_designatorLEFT INTERNAL AND RIGHT EXTERNAL THREAD
width_across_flats0.188 INCHES NOMINAL IN
nominal_thread_size0.112 INCHES RIGHT EXTERNAL IN
cross-sectional_shapeHEXAGON
right_projection_length0.350 INCHES NOMINAL IN
thread_quantity_per_inch40 LEFT INTERNAL (INCLUDES THRU THREAD)
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
NSN5340-01-328-2006
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5816644 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: 0.188 INCHES NOMINAL IN
•
LENGTH: 0.898 INCHES NOMINAL IN
•
STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT EXTERNAL THREAD
•
NOMINAL THREAD SIZE: 0.112 INCHES RIGHT EXTERNAL IN
•
CROSS-SECTIONAL SHAPE: HEXAGON
•
THREAD CLASS: 2A RIGHT EXTERNAL A
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.188 INCHES NOMINAL IN
LENGTH0.898 INCHES NOMINAL IN
STYLE DESIGNATORLEFT INTERNAL AND RIGHT EXTERNAL THREAD
NOMINAL THREAD SIZE0.112 INCHES RIGHT EXTERNAL IN
NOMINAL THREAD SIZE0.112 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
CROSS-SECTIONAL SHAPEHEXAGON
THREAD CLASS2A RIGHT EXTERNAL A
THREAD CLASS2B LEFT INTERNAL (INCLUDES THRU THREAD)
THREAD QUANTITY PER INCH40 LEFT INTERNAL (INCLUDES THRU THREAD)
THREAD QUANTITY PER INCH40 RIGHT EXTERNAL
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 5816644?
5816644 is a STANDOFF,THREADED,SPACING.
What is the NSN for 5816644?
5816644 is cataloged in the U.S. Government catalog under NSN 5340-01-328-2006. 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.