PartsTable
Technical Data Sheet
AN775-4D ✓ Verified by PartsTable
· HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

CONNECTOR,MULTIPLE,FLUID PRESSUR. Key specifications include material: ALUMINUM, body_style: PLAIN, overall_length: 1.375 INCHES NOMINAL IN, surface_treatment: ANODIZE, width_across_flats: 0.688 INCHES NOMINAL IN, first_end_seat_angle: 45.0 DEGREES NOMINAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-0377, 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
AN775-4D
NSN: 4730-00-278-0377
FSC: 4730
CAGE: 71563 — COLLINS ENGINEERING CORP (USA)
SPECIFICATIONS
materialALUMINUM
body_stylePLAIN
overall_length1.375 INCHES NOMINAL IN
surface_treatmentANODIZE
width_across_flats0.688 INCHES NOMINAL IN
first_end_seat_angle45.0 DEGREES NOMINAL
concentric_hole_depth1.156 INCHES NOMINAL IN
first_end_thread_class3A A
first_end_thread_length0.438 INCHES NOMINAL IN
wrenching_feature_styleHEXAGON
concentric_hole_diameter0.172 INCHES NOMINAL IN
wrenching_feature_height0.188 INCHES NOMINAL IN
NSN4730-00-278-0377
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AN775-4D · 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 CONNECTION TYPE: THREADED EXTERNAL TUBE
WRENCHING FEATURE STYLE: HEXAGON
FIRST END THREAD DIRECTION: RIGHT-HAND
FIRST END SEAT ANGLE: 45.0 DEGREES NOMINAL
MATERIAL: ALUMINUM
FIRST END THREAD LENGTH: 0.438 INCHES NOMINAL IN
CONCENTRIC HOLE DIAMETER: 0.172 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
FIRST END CONNECTION TYPETHREADED EXTERNAL TUBE
WRENCHING FEATURE STYLEHEXAGON
FIRST END THREAD DIRECTIONRIGHT-HAND
FIRST END SEAT ANGLE45.0 DEGREES NOMINAL
OVERALL LENGTH1.375 INCHES NOMINAL IN
MATERIALALUMINUM
FIRST END THREAD LENGTH0.438 INCHES NOMINAL IN
CONCENTRIC HOLE DIAMETER0.172 INCHES NOMINAL IN
LENGTH FROM BEARING SURFACE OF WRENCHING FEATURE TO BOLT END1.188 INCHES NOMINAL IN
FIRST END THREAD CLASS3A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
AS4875Interchangeable
interchangeable cross-reference
interchangeable
AS5161Interchangeable
interchangeable cross-reference
interchangeable
AS5161-06Interchangeable
interchangeable cross-reference
interchangeable
4730002740936Interchangeable
interchangeable cross-reference
interchangeable
AN775-8DInterchangeable
interchangeable cross-reference
interchangeable
AN775-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN775-4D?
AN775-4D is a CONNECTOR,MULTIPLE,FLUID PRESSUR.
What parts can replace AN775-4D?
There are 14 known substitutes for AN775-4D: AS4875, AS5161, AS5161-06 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN775-4D?
AN775-4D is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-0377. This indicates validated use in U.S. government and defense supply chains.
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