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SS6987-3.500-00 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

SS6987-3.500-00: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 3.50 INCHES NOMINAL IN, material: STEEL COMP 303 STANDOFF, thread_length: 0.375 INCHES NOMINAL RIGHT EXTERNAL IN, style_designator: PROJECTION ONE END, thread_series_designator: UNF LEFT INTERNAL (INCLUDES THRU THREAD), right_projection_diameter: 0.1875 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-699-8295, 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
SS6987-3.500-00
NSN: 5340-01-699-8295
FSC: 5340 — Hardware, Commercial
CAGE: 05791 — LYN-TRON, INC. DBA LYN-TRON INC (USA)
SPECIFICATIONS
length3.50 INCHES NOMINAL IN
materialSTEEL COMP 303 STANDOFF
thread_length0.375 INCHES NOMINAL RIGHT EXTERNAL IN
style_designatorPROJECTION ONE END
thread_series_designatorUNF LEFT INTERNAL (INCLUDES THRU THREAD)
right_projection_diameter0.1875 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyMALE-FEMALE STANDOFF,
NSN5340-01-699-8295
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SS6987-3.500-00 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: 3.50 INCHES NOMINAL IN
•
THREAD LENGTH: 0.375 INCHES NOMINAL RIGHT EXTERNAL IN
•
STYLE DESIGNATOR: PROJECTION ONE END
•
MATERIAL: STEEL COMP 303 STANDOFF
•
RIGHT PROJECTION DIAMETER: 0.1875 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNF LEFT INTERNAL (INCLUDES THRU THREAD)
TECHNICAL CHARACTERISTICS
LENGTH3.50 INCHES NOMINAL IN
THREAD LENGTH0.375 INCHES NOMINAL RIGHT EXTERNAL IN
STYLE DESIGNATORPROJECTION ONE END
PART NAME ASSIGNED BY CONTROLLING AGENCYMALE-FEMALE STANDOFF,
MATERIALSTEEL COMP 303 STANDOFF
RIGHT PROJECTION DIAMETER0.1875 INCHES NOMINAL IN
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SS6987-3.500-00?
SS6987-3.500-00 is a STANDOFF,THREADED,SPACING.
What is the NSN for SS6987-3.500-00?
SS6987-3.500-00 is cataloged in the U.S. Government catalog under NSN 5340-01-699-8295. 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.