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Technical Data Sheet
PartsTable / MRO / 11559
11559 ✓ 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

The TELETYPEWRITER SUBASSEMBLY is a the manufacturer industrial component. Key specifications include overall_width: 0.406 INCHES NOMINAL IN, overall_length: 7.375 INCHES NOMINAL IN, special_features: KEYTOP 1; LEVER 1. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-254-6443, 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→ 11559
NSN: 4730-00-254-6443
FSC: 4730
CAGE: 70334 — ALTER HARRY CO THE DIV OF T E C (USA)
SPECIFICATIONS
overall_width0.406 INCHES NOMINAL IN
overall_length7.375 INCHES NOMINAL IN
special_featuresKEYTOP 1; LEVER 1
NSN4730-00-254-6443
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 11559 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
P1-5Interchangeable
interchangeable cross-reference
interchangeable
D15-651MPC892T0895Interchangeable
interchangeable cross-reference
interchangeable
D15-509QPC892T0895Interchangeable
interchangeable cross-reference
interchangeable
D15-509RPC922T0925Interchangeable
interchangeable cross-reference
interchangeable
A6570Interchangeable
interchangeable cross-reference
interchangeable
6250Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11559?
11559 is a TELETYPEWRITER SUBASSEMBLY. It is classified as a MRO (MRO_GENERAL).
What parts can replace 11559?
There are 26 known substitutes for 11559: P1-5, D15-651MPC892T0895, D15-509QPC892T0895 and 23 more. Substitute compatibility should be verified for your specific system.
Is 11559 still available?
11559 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