PartsTable
Technical Data Sheet
PartsTable / MRO / 121400
121400 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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

MOUNT,ARMORED VEHICLE PERISCOPE. Key specifications include material: STEEL OVERALL, thread_size: 7/16-24, thread_class: 2A A, hole_diameter: 0.256 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN, overall_length: 0.563 INCHES NOMINAL IN, outside_diameter: 0.466 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-014-2432, 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
MRO→ MRO_GENERAL→ 121400
NSN: 4730-00-014-2432
FSC: 4730
CAGE: 72853 — STANT CORP EDELMANN DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_size7/16-24
thread_class2A A
hole_diameter0.256 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
overall_length0.563 INCHES NOMINAL IN
outside_diameter0.466 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
thread_directionRIGHT-HAND
seat_angle_in_deg45.0
surface_treatmentCADMIUM OVERALL
material_thickness0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
width_across_flats0.433 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
NSN4730-00-014-2432
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 121400 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW THREAD SERIES DESIGNATOR: UNS
•
SPECIFICATION/STANDARD DATA: 81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
MATERIAL: COPPER ALLOY 360
•
NONDEFINITIVE SPEC/STD DATA: 9 FIGURE
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE CA360 ASSN STD SINGLE MATERIAL RESPONSE
•
STYLE DESIGNATOR: INVERTED NUT, TUBE, FLARE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
OVERALL LENGTH0.563 INCHES NOMINAL IN
SCREW THREAD SERIES DESIGNATORUNS
SPECIFICATION/STANDARD DATA81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
MATERIALCOPPER ALLOY 360
NONDEFINITIVE SPEC/STD DATA9 FIGURE
MATERIAL DOCUMENT AND CLASSIFICATIONSAE CA360 ASSN STD SINGLE MATERIAL RESPONSE
STYLE DESIGNATORINVERTED NUT, TUBE, FLARE
WIDTH ACROSS FLATS0.433 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
THREAD SIZE7/16-24
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
137397Interchangeable
interchangeable cross-reference
interchangeable
110-6752Interchangeable
interchangeable cross-reference
interchangeable
705FB3Interchangeable
interchangeable cross-reference
interchangeable
SAE J512 3 040110BInterchangeable
interchangeable cross-reference
interchangeable
142431Interchangeable
interchangeable cross-reference
interchangeable
100X3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121400?
121400 is a MOUNT,ARMORED VEHICLE PERISCOPE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 121400?
There are 24 known substitutes for 121400: 137397, 110-6752, 705FB3 and 21 more. Substitute compatibility should be verified for your specific system.
Is 121400 still available?
121400 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026