PartsTable
Technical Data Sheet
Download PDF

AN937J4 — CONNECTOR,MULTIPLE,FLUID PRESSUR

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AN937J4: CONNECTOR,MULTIPLE,FLUID PRESSUR.

CONNECTOR,MULTIPLE,FLUID PRESSUR. Key specifications include material: STEEL COMP 304 OVERALL, leg_length: 0.750 INCHES MINIMUM AND 0.796 INCHES MAXIMUM ALL ENDS IN, thread_class: 3B ALL ENDS, connection_type: THREADED INTERNAL BOSS ALL ENDS, connection_style: GASKET SEAL (BOSS) ALL ENDS, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-227-7952, 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
AN937J4
NSN: 4730-00-227-7952
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 22995 — CROWN FITTING CO INC (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
leg_length0.750 INCHES MINIMUM AND 0.796 INCHES MAXIMUM ALL ENDS IN
thread_class3B ALL ENDS
connection_typeTHREADED INTERNAL BOSS ALL ENDS
connection_styleGASKET SEAL (BOSS) ALL ENDS
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.438 INCHES ALL ENDS IN
end_item_identificationAIRCRAFT FLUID SYSTEM
thread_series_designatorUNF ALL ENDS
specification/standard_data88044-AN937 GOVERNMENT STANDARD AND 81343-AS4875 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN4730-00-227-7952
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AN937J4 · 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
•
CONNECTION STYLE: GASKET SEAL (BOSS) ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL BOSS ALL ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
LEG LENGTH: 0.750 INCHES MINIMUM AND 0.796 INCHES MAXIMUM ALL ENDS IN
•
NOMINAL THREAD SIZE: 0.438 INCHES ALL ENDS IN
•
SPECIFICATION/STANDARD DATA: 88044-AN937 GOVERNMENT STANDARD AND 81343-AS4875 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
THREAD CLASS: 3B ALL ENDS
TECHNICAL CHARACTERISTICS
CONNECTION STYLEGASKET SEAL (BOSS) ALL ENDS
CONNECTION TYPETHREADED INTERNAL BOSS ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
LEG LENGTH0.750 INCHES MINIMUM AND 0.796 INCHES MAXIMUM ALL ENDS IN
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
SPECIFICATION/STANDARD DATA88044-AN937 GOVERNMENT STANDARD AND 81343-AS4875 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS3B ALL ENDS
END ITEM IDENTIFICATIONAIRCRAFT FLUID SYSTEM
MATERIALSTEEL COMP 304 OVERALL
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 3
SAE-AS4875Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
AS4875Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-F-5509Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy AN937J4?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is AN937J4?
AN937J4 is a CONNECTOR,MULTIPLE,FLUID PRESSUR.
What parts can replace AN937J4?
There are 3 known substitutes for AN937J4: SAE-AS4875, AS4875, MIL-F-5509. Substitute compatibility should be verified for your specific system.
What is the NSN for AN937J4?
AN937J4 is cataloged in the U.S. Government catalog under NSN 4730-00-227-7952. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — AN937J4

✓ 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.