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A505-3 — SWITCH,ROTARY

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

A505-3: SWITCH,ROTARY.

The SWITCH,ROTARY is a the manufacturer industrial component. Key specifications include shaft_type: ROUND SINGLE ACTUATOR, shaft_length: 0.875 INCHES NOMINAL SINGLE ACTUATOR IN, thread_class: 2A SINGLE MOUNTING FACILITY A, overall_width: 1.094 INCHES NOMINAL IN, pole_quantity: 3 EACH SECTION FRONT, terminal_type: TAB, SOLDER LUG. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-189-2741, 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
A505-3
NSN: 4730-00-189-2741
NIINs: 001892741, 004931226, 010760480
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 41947 — MUELLER BRASS CO. (USA)
SPECIFICATIONS
shaft_typeROUND SINGLE ACTUATOR
shaft_length0.875 INCHES NOMINAL SINGLE ACTUATOR IN
thread_class2A SINGLE MOUNTING FACILITY A
overall_width1.094 INCHES NOMINAL IN
pole_quantity3 EACH SECTION FRONT
terminal_typeTAB, SOLDER LUG
thread_length0.375 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
overall_height1.031 INCHES NOMINAL IN
overall_length2.086 INCHES NOMINAL IN
shaft_diameter0.250 INCHES NOMINAL SINGLE ACTUATOR IN
throw_quantity2 EACH SECTION FRONT
mounting_methodTHREADED BUSHING SINGLE MOUNTING FACILITY
NSN4730-00-189-2741
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: A505-3 · 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 5
5-13-2041-10-18Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
J513Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
7454261P5Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS35872-4Reference document
Same NSN cross-reference
Reference document — Identification reference
NS4-8Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A505-3?
A505-3 is a SWITCH,ROTARY.
What parts can replace A505-3?
There are 5 known substitutes for A505-3: 5-13-2041-10-18, J513, 7454261P5 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A505-3?
A505-3 is cataloged in the U.S. Government catalog under NSN 4730-00-189-2741. 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.