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457-5689 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

457-5689: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 0.625 INCHES NOMINAL IN, material: STEEL COMP 630 OVERALL, end_radius: 0.156 INCHES NOMINAL IN, groove_width: 0.125 INCHES NOMINAL IN, thread_length: 0.437 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN, groove_diameter: 0.374 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-457-9255, 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
457-5689
NSN: 5340-00-457-9255
FSC: 5340 — Hardware, Commercial
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
length0.625 INCHES NOMINAL IN
materialSTEEL COMP 630 OVERALL
end_radius0.156 INCHES NOMINAL IN
groove_width0.125 INCHES NOMINAL IN
thread_length0.437 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
groove_diameter0.374 INCHES NOMINAL IN
style_designatorGROOVED W/ LEFT INTERNAL AND RIGHT EXTERNAL THREAD
surface_treatmentCHROMIUM OVERALL
width_across_flats0.614 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN
cross-sectional_shapeHEXAGON
smaller_groove_radius0.010 INCHES NOMINAL IN
smaller_groove_diameter0.314 INCHES MINIMUM AND 0.324 INCHES MAXIMUM IN
NSN5340-00-457-9255
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 457-5689 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
•
SMALLER GROOVE DIAMETER: 0.314 INCHES MINIMUM AND 0.324 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.614 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN
•
LENGTH: 0.625 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-C-320, TYPE 1, CLASS 2D FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
GROOVE DIAMETER: 0.374 INCHES NOMINAL IN
•
END RADIUS: 0.156 INCHES NOMINAL IN
•
THREAD LENGTH: 0.437 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
•
DISTANCE FROM END TO GROOVE: 0.061 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SMALLER GROOVE DIAMETER0.314 INCHES MINIMUM AND 0.324 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.614 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN
LENGTH0.625 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-C-320, TYPE 1, CLASS 2D FED SPEC SINGLE TREATMENT RESPONSE OVERALL
GROOVE DIAMETER0.374 INCHES NOMINAL IN
END RADIUS0.156 INCHES NOMINAL IN
THREAD LENGTH0.437 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
DISTANCE FROM END TO GROOVE0.061 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
STYLE DESIGNATORGROOVED W/ LEFT INTERNAL AND RIGHT EXTERNAL THREAD
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5643 ASSN STD SINGLE MATERIAL RESPONSE 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

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 457-5689?
457-5689 is a STANDOFF,THREADED,SPACING.
What is the NSN for 457-5689?
457-5689 is cataloged in the U.S. Government catalog under NSN 5340-00-457-9255. 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.