PartsTable
Technical Data Sheet
Download PDF

A-400-1-2 — LINE SECTION,RADIO FREQUENCY TRA

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

A-400-1-2: LINE SECTION,RADIO FREQUENCY TRA.

LINE SECTION,RADIO FREQUENCY TRA. Key specifications include material: STEEL OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.921 INCHES NOMINAL SECOND END IN, thread_class: 2A SECOND END A, usage_design: LINE BETWEEN ROTATING JOINT AND ANTENNA, overall_width: 2.563 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-138-2655, 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
A-400-1-2
NSN: 4730-00-138-2655
NIINs: 001382655, 002658706, 004516044, 004898203
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 3T9T9 — SWAGELOK CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flow_angle90.0 DEGREES
leg_length1.921 INCHES NOMINAL SECOND END IN
thread_class2A SECOND END A
usage_designLINE BETWEEN ROTATING JOINT AND ANTENNA
overall_width2.563 INCHES NOMINAL IN
overall_height1.375 INCHES NOMINAL IN
overall_length5.031 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
surface_treatmentCADMIUM OVERALL
operating_pressure2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NSN4730-00-138-2655
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: A-400-1-2 · 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
•
NOMINAL OVERALL LENGTH: 1.312 INCHES IN
TECHNICAL CHARACTERISTICS
NOMINAL OVERALL LENGTH1.312 INCHES IN
SUBSTITUTES & CROSS-REFERENCES 1
2518781-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy A-400-1-2?
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 A-400-1-2?
A-400-1-2 is a LINE SECTION,RADIO FREQUENCY TRA.
What parts can replace A-400-1-2?
There is 1 known substitute for A-400-1-2: 2518781-2. Substitute compatibility should be verified for your specific system.
What is the NSN for A-400-1-2?
A-400-1-2 is cataloged in the U.S. Government catalog under NSN 4730-00-138-2655. 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 — A-400-1-2

✓ 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.