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197C8990 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

197C8990: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_class: 2B LEFT INTERNAL (INCLUDES THRU THREAD), style_designator: INTERNALLY THREADED FULL LENGTH, thread_direction: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD), surface_treatment: PHOSPHATE OVERALL, nominal_thread_size: 0.250 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-563-5769, 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
197C8990
NSN: 5340-01-563-5769
FSC: 5340 — Hardware, Commercial
CAGE: 05606 — GENERAL DYNAMICS-OTS, INC. DIV ORDNANCE AND TACTICAL SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_class2B LEFT INTERNAL (INCLUDES THRU THREAD)
style_designatorINTERNALLY THREADED FULL LENGTH
thread_directionRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
surface_treatmentPHOSPHATE OVERALL
nominal_thread_size0.250 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
thread_quantity_per_inch28 LEFT INTERNAL (INCLUDES THRU THREAD)
thread_series_designatorUNF LEFT INTERNAL (INCLUDES THRU THREAD)
part_name_assigned_by_controlling_agencySPACER,THREADED
NSN5340-01-563-5769
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 197C8990 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
•
STYLE DESIGNATOR: INTERNALLY THREADED FULL LENGTH
•
THREAD DIRECTION: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
•
NOMINAL THREAD SIZE: 0.250 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
THREAD CLASS: 2B LEFT INTERNAL (INCLUDES THRU THREAD)
•
THREAD QUANTITY PER INCH: 28 LEFT INTERNAL (INCLUDES THRU THREAD)
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORINTERNALLY THREADED FULL LENGTH
THREAD DIRECTIONRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
NOMINAL THREAD SIZE0.250 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
SURFACE TREATMENTPHOSPHATE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYSPACER,THREADED
THREAD CLASS2B LEFT INTERNAL (INCLUDES THRU THREAD)
THREAD QUANTITY PER INCH28 LEFT INTERNAL (INCLUDES THRU THREAD)
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNF LEFT INTERNAL (INCLUDES THRU THREAD)
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 197C8990?
197C8990 is a STANDOFF,THREADED,SPACING.
What is the NSN for 197C8990?
197C8990 is cataloged in the U.S. Government catalog under NSN 5340-01-563-5769. This indicates validated use in U.S. government and defense supply chains.
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