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123812-01 — ADAPTER AND FLANGE ASSEMBLY

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

123812-01: ADAPTER AND FLANGE ASSEMBLY.

The ADAPTER AND FLANGE ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, overall_width: 17.8 MILLIMETERS NOMINAL MM, overall_length: 34.0 MILLIMETERS NOMINAL MM, overall_diameter: 36.0 MILLIMETERS NOMINAL MM, end_item_identification: GB-152-AF,GAS BOOSTER WITH CONTROL KIT,NSN: 6685-01-529-6990., part_name_assigned_by_controlling_agency: BULKHEAD UNION, DH500F. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-561-9557, 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
123812-01
NSN: 4730-01-561-9557
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 2J641 — DH INSTRUMENTS INC. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
overall_width17.8 MILLIMETERS NOMINAL MM
overall_length34.0 MILLIMETERS NOMINAL MM
overall_diameter36.0 MILLIMETERS NOMINAL MM
special_featuresBOLT HOLE CENTER TO CENTER ON FLANGE IS 26MM, FLANGE THICKNESS IS 6MM, FROM BOTTOM TO FLANGE IS 16MM, THROUGH HOLE IS 2.40MM, FLANGE HOLE DIAMETER 7.50MM O.D. BY 3.70MM DEEP AND 4.30MM THRU. MM
end_item_identificationGB-152-AF,GAS BOOSTER WITH CONTROL KIT,NSN: 6685-01-529-6990.
part_name_assigned_by_controlling_agencyBULKHEAD UNION, DH500F
NSN4730-01-561-9557
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 123812-01 · 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
•
OVERALL DIAMETER: 36.0 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER36.0 MILLIMETERS NOMINAL MM
OVERALL LENGTH34.0 MILLIMETERS NOMINAL MM
OVERALL WIDTH17.8 MILLIMETERS NOMINAL MM
SPECIAL FEATURESBOLT HOLE CENTER TO CENTER ON FLANGE IS 26MM, FLANGE THICKNESS IS 6MM, FROM BOTTOM TO FLANGE IS 16MM, THROUGH HOLE IS 2.40MM, FLANGE HOLE DIAMETER 7.50MM O.D. BY 3.70MM DEEP AND 4.30MM THRU. MM
PART NAME ASSIGNED BY CONTROLLING AGENCYBULKHEAD UNION, DH500F
END ITEM IDENTIFICATIONGB-152-AF,GAS BOOSTER WITH CONTROL KIT,NSN: 6685-01-529-6990.
MATERIALSTEEL CORROSION RESISTING
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 1
U03812Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 123812-01?
123812-01 is a ADAPTER AND FLANGE ASSEMBLY.
What parts can replace 123812-01?
There is 1 known substitute for 123812-01: U03812. Substitute compatibility should be verified for your specific system.
What is the NSN for 123812-01?
123812-01 is cataloged in the U.S. Government catalog under NSN 4730-01-561-9557. 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.