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Technical Data Sheet
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101646-4 — BOLT,FLUID PASSAGE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

101646-4: BOLT,FLUID PASSAGE.

The BOLT,FLUID PASSAGE is a the manufacturer industrial component. Key specifications include end_item_identification: H-53 ARMORED ATTENUATING CREW SEAT. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-036-5732, 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
101646-4
NSN: 4730-00-036-5732
NIINs: 000365732, 016141330
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 77820 — AMPHENOL CORP DIV AMPHENOL AEROSPACE OPERATIONS (USA)
SPECIFICATIONS
end_item_identificationH-53 ARMORED ATTENUATING CREW SEAT
NSN4730-00-036-5732
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 101646-4 · 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: 0.937 INCHES NOMINAL IN
•
FIRST END THREAD DIRECTION: LEFT-HAND
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LENGTH FROM BEARING SURFACE OF WRENCHING FEATURE TO END OF FIRST DIAMETER: 0.281 INCHES NOMINAL IN
•
BODY STYLE: RELIEVED
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FIRST END THREAD CLASS: 2A A
•
FIRST END STYLE DESIGNATOR: FLARED
•
SECOND DIAMETER FROM WRENCHING FEATURE: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FIRST END THREAD SERIES DESIGNATORUNF
WIDTH ACROSS FLATS0.937 INCHES NOMINAL IN
FIRST END THREAD DIRECTIONLEFT-HAND
LENGTH FROM BEARING SURFACE OF WRENCHING FEATURE TO END OF FIRST DIAMETER0.281 INCHES NOMINAL IN
BODY STYLERELIEVED
FIRST END THREAD CLASS2A A
FIRST END STYLE DESIGNATORFLARED
SECOND DIAMETER FROM WRENCHING FEATURE0.625 INCHES NOMINAL IN
CONCENTRIC HOLE DEPTH1.562 INCHES NOMINAL IN
WRENCHING FEATURE HEIGHT0.219 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
3A1PS1353Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 101646-4?
101646-4 is a BOLT,FLUID PASSAGE.
What parts can replace 101646-4?
There is 1 known substitute for 101646-4: 3A1PS1353. Substitute compatibility should be verified for your specific system.
What is the NSN for 101646-4?
101646-4 is cataloged in the U.S. Government catalog under NSN 4730-00-036-5732. 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.