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1599630 — BOLT,FLUID PASSAGE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1599630: BOLT,FLUID PASSAGE.

The BOLT,FLUID PASSAGE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303, overall_length: 1.781 INCHES NOMINAL IN, width_across_flats: 0.746 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, concentric_hole_depth: 1.500 INCHES NOMINAL IN, first_end_thread_class: 2A A, first_end_thread_length: 0.538 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-906-5996, 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
1599630
NSN: 4730-00-906-5996
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 303
overall_length1.781 INCHES NOMINAL IN
width_across_flats0.746 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
concentric_hole_depth1.500 INCHES NOMINAL IN
first_end_thread_class2A A
first_end_thread_length0.538 INCHES NOMINAL IN
wrenching_feature_styleHEXAGON
concentric_hole_diameter0.094 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN
wrenching_feature_height0.312 INCHES NOMINAL IN
first_end_connection_typeTHREADED EXTERNAL TUBE
first_end_style_designatorPLAIN
first_end_thread_directionRIGHT-HAND
NSN4730-00-906-5996
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1599630 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FIRST END THREAD SERIES DESIGNATOR: UNF
•
WIDTH ACROSS FLATS: 0.746 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
FIRST END THREAD DIRECTION: RIGHT-HAND
•
LENGTH FROM BEARING SURFACE OF WRENCHING FEATURE TO END OF FIRST DIAMETER: 0.281 INCHES NOMINAL IN
•
THIRD DIAMETER FROM WRENCHING FEATURE: 0.360 INCHES NOMINAL IN
•
FIRST END THREAD CLASS: 2A A
•
FIRST END THREAD QUANTITY PER INCH: 20
•
FIRST END STYLE DESIGNATOR: PLAIN
TECHNICAL CHARACTERISTICS
FIRST END THREAD SERIES DESIGNATORUNF
WIDTH ACROSS FLATS0.746 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
FIRST END THREAD DIRECTIONRIGHT-HAND
LENGTH FROM BEARING SURFACE OF WRENCHING FEATURE TO END OF FIRST DIAMETER0.281 INCHES NOMINAL IN
THIRD DIAMETER FROM WRENCHING FEATURE0.360 INCHES NOMINAL IN
FIRST END THREAD CLASS2A A
FIRST END THREAD QUANTITY PER INCH20
FIRST END STYLE DESIGNATORPLAIN
LENGTH FROM BEARING SURFACE OF WRENCHING FEATURE TO END OF THIRD DIAMETER0.556 INCHES NOMINAL IN
SECOND DIAMETER FROM WRENCHING FEATURE0.719 INCHES NOMINAL IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
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 1599630?
1599630 is a BOLT,FLUID PASSAGE.
What is the NSN for 1599630?
1599630 is cataloged in the U.S. Government catalog under NSN 4730-00-906-5996. 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.