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CT91-1 — CYLINDER ASSEMBLY,HYDRAULIC BRAK

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

CT91-1: CYLINDER ASSEMBLY,HYDRAULIC BRAK.

CYLINDER ASSEMBLY,HYDRAULIC BRAK. Key specifications include body_width: 0.951 INCHES MAXIMUM IN, body_height: 0.200 INCHES MAXIMUM IN, body_length: 1.155 INCHES MAXIMUM IN, overall_height: 0.335 INCHES NOMINAL IN, inclosure_material: METAL, operating_temp_range: -55.0 TO 125.0 CELSIUS DEGC. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-278-3397, 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
CT91-1
NSN: 4730-00-278-3397
NIINs: 002783397, 010534280
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 79960 — ZENITH FUEL SYSTEMS LLC (USA)
SPECIFICATIONS
body_width0.951 INCHES MAXIMUM IN
body_height0.200 INCHES MAXIMUM IN
body_length1.155 INCHES MAXIMUM IN
overall_height0.335 INCHES NOMINAL IN
inclosure_materialMETAL
operating_temp_range-55.0 TO 125.0 CELSIUS DEGC
input_circuit_pattern2 INPUT
inclosure_configurationFLAT PACK
terminal_surface_treatmentGOLD
design_function_and_quantity2 AMPLIFIER, DETECTOR
case_outline_source_and_designator/10107 MIL-M-38510
NSN4730-00-278-3397
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: CT91-1 · 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
SUBSTITUTES & CROSS-REFERENCES 8
94S25Reference document
Same NSN cross-reference
Reference document — Secondary reference
18628Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
467-DReference document
Same NSN cross-reference
Reference document — Secondary reference
98-78-5Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
48X23Reference document
Same NSN cross-reference
Reference document — Secondary reference
103883Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CT91-1?
CT91-1 is a CYLINDER ASSEMBLY,HYDRAULIC BRAK.
What parts can replace CT91-1?
There are 8 known substitutes for CT91-1: 94S25, 18628, 467-D and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CT91-1?
CT91-1 is cataloged in the U.S. Government catalog under NSN 4730-00-278-3397. This indicates validated use in U.S. government and defense supply chains.
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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.