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750239 — COLLAR,SHAFT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

750239: COLLAR,SHAFT.

The COLLAR,SHAFT is a the manufacturer industrial component. Key specifications include length: 0.936 INCHES NOMINAL IN, material: STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 303 PLUS X, bore_diameter: 0.1885 INCHES NOMINAL IN, thread_length: 0.250 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN, outside_diameter: 0.500 INCHES NOMINAL IN, style_designator: ROUND STEPPED. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-397-6091, 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
750239
NSN: 5340-01-397-6091
NIINs: 013976091, 013989960
FSC: 5340 — Hardware, Commercial
CAGE: 80249 — BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. (USA)
SPECIFICATIONS
length0.936 INCHES NOMINAL IN
materialSTEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 303 PLUS X
bore_diameter0.1885 INCHES NOMINAL IN
thread_length0.250 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
outside_diameter0.500 INCHES NOMINAL IN
style_designatorROUND STEPPED
thread_directionRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
surface_treatmentPASSIVATE OVERALL
small_end_diameter0.370 INCHES NOMINAL IN
width_across_flats0.250 INCHES NOMINAL IN
nominal_thread_size0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
cross-sectional_shapeHEXAGON
NSN5340-01-397-6091
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 750239 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: 0.250 INCHES NOMINAL IN
•
LENGTH: 0.936 INCHES NOMINAL IN
•
THREAD LENGTH: 0.250 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763, CL303, COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND RIGHT EXTERNAL
•
NOMINAL THREAD SIZE: 0.138 INCHES RIGHT EXTERNAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.250 INCHES NOMINAL IN
LENGTH0.936 INCHES NOMINAL IN
THREAD LENGTH0.250 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
THREAD LENGTH0.380 INCHES MINIMUM RIGHT EXTERNAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763, CL303, COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND RIGHT EXTERNAL
THREAD DIRECTIONRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
NOMINAL THREAD SIZE0.138 INCHES RIGHT EXTERNAL IN
NOMINAL THREAD SIZE0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
CROSS-SECTIONAL SHAPEHEXAGON
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 750239?
750239 is a COLLAR,SHAFT.
What is the NSN for 750239?
750239 is cataloged in the U.S. Government catalog under NSN 5340-01-397-6091. 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.