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A-4139-1032-15 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A-4139-1032-15: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 3.250 INCHES NOMINAL IN, material: ALUMINUM OVERALL, style_designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS, surface_treatment: CHROMATE OVERALL, width_across_flats: 0.375 INCHES NOMINAL IN, nominal_thread_size: 0.190 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-549-3938, 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
A-4139-1032-15
NSN: 5340-01-549-3938
FSC: 5340 — Hardware, Commercial
CAGE: 0GCW4 — GLOBE ELECTRONIC HARDWARE, INC. (USA)
SPECIFICATIONS
length3.250 INCHES NOMINAL IN
materialALUMINUM OVERALL
style_designatorLEFT INTERNAL AND RIGHT INTERNAL THREADS
surface_treatmentCHROMATE OVERALL
width_across_flats0.375 INCHES NOMINAL IN
nominal_thread_size0.190 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
cross-sectional_shapeHEXAGON
end_item_identificationB-1B SECBM
thread_quantity_per_inch32 LEFT INTERNAL (INCLUDES THRU THREAD)
thread_series_designatorUNF LEFT INTERNAL (INCLUDES THRU THREAD)
surface_treatment_document_and_classificationMIL-C-5541 D IRIDITE NO. 14 (GOLD) MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5340-01-549-3938
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A-4139-1032-15 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: 0.375 INCHES NOMINAL IN
•
LENGTH: 3.250 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 D IRIDITE NO. 14 (GOLD) MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT INTERNAL THREADS
•
NOMINAL THREAD SIZE: 0.190 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
•
CROSS-SECTIONAL SHAPE: HEXAGON
•
SURFACE TREATMENT: CHROMATE OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.375 INCHES NOMINAL IN
LENGTH3.250 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 D IRIDITE NO. 14 (GOLD) MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORLEFT INTERNAL AND RIGHT INTERNAL THREADS
NOMINAL THREAD SIZE0.190 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
NOMINAL THREAD SIZE0.190 INCHES RIGHT INTERNAL IN
CROSS-SECTIONAL SHAPEHEXAGON
SURFACE TREATMENTCHROMATE OVERALL
END ITEM IDENTIFICATIONB-1B SECBM
THREAD QUANTITY PER INCH32 RIGHT INTERNAL
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 A-4139-1032-15?
A-4139-1032-15 is a STANDOFF,THREADED,SPACING.
What is the NSN for A-4139-1032-15?
A-4139-1032-15 is cataloged in the U.S. Government catalog under NSN 5340-01-549-3938. 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.