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SS49 — SWITCH,RADIO FREQUENCY TRANSMISS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

SS49: SWITCH,RADIO FREQUENCY TRANSMISS.

SWITCH,RADIO FREQUENCY TRANSMISS. Key specifications include length: 0.250 INCHES NOMINAL IN, material: ALUMINUM ALLOY OVERALL, body_style: RECTANGULAR, flow_angle: 90.0 DEGREES, leg_length: 0.953 INCHES NOMINAL SECOND END IN, seat_angle: 37.0 DEGREES ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-054-1027, 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
SS49
NSN: 4730-00-054-1027
NIINs: 000541027, 000771039, 001034880, 001034881, 001092742, 001388200, 001460450, 001655001, 001958358, 002340079, 003284802, 003687197, 004031673, 004108091, 004361440, 005984365, 007267392, 007602759, 007637957, 007856068, 008653502, 008989357, 009331991, 009398632, 009398633, 009398634, 009398635, 009398636, 009398637, 009476712, 009476713, 009484732, 009910813, 010281036, 011633530, 011641976, 011644923, 011649236, 011702437, 011702438, 011702439, 011702440, 011702441, 011720581, 011961156, 012010825, 012010826, 012430863, 012842192, 013042805, 013042814, 013047546
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
length0.250 INCHES NOMINAL IN
materialALUMINUM ALLOY OVERALL
body_styleRECTANGULAR
flow_angle90.0 DEGREES
leg_length0.953 INCHES NOMINAL SECOND END IN
seat_angle37.0 DEGREES ALL ENDS
design_typeSTRAIGHT
switch_typeTRANSFER
reducer_typeCONCENTRIC
thread_class3A FIRST END BULKHEAD A
overall_width0.490 INCHES MINIMUM AND 0.583 INCHES MAXIMUM IN
thread_length0.250 INCHES NOMINAL FIRST PROVISION IN
NSN4730-00-054-1027
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: SS49 · 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
•
CONNECTION STYLE: FLARED (TUBE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.250 INCHES IN
•
STYLE DESIGNATOR: FLARED W/ CENTER WRENCHING FACILITY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
LEG LENGTH: 0.625 INCHES NOMINAL FIRST END IN
•
REDUCED PASSAGE NOMINAL INSIDE DIAMETER: 0.040 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 0.438 INCHES ALL ENDS IN
•
SEAT ANGLE: 37.0 DEGREES ALL ENDS
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARED (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH1.250 INCHES IN
STYLE DESIGNATORFLARED W/ CENTER WRENCHING FACILITY
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
LEG LENGTH0.625 INCHES NOMINAL FIRST END IN
REDUCED PASSAGE NOMINAL INSIDE DIAMETER0.040 INCHES FIRST END IN
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
SEAT ANGLE37.0 DEGREES ALL ENDS
SPECIAL FEATURESCOLOR YELLOW
SURFACE TREATMENTANODIZE INSIDE
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
SS49TA815-4D16WSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SS49?
SS49 is a SWITCH,RADIO FREQUENCY TRANSMISS.
What parts can replace SS49?
There is 1 known substitute for SS49: SS49TA815-4D16W. Substitute compatibility should be verified for your specific system.
What is the NSN for SS49?
SS49 is cataloged in the U.S. Government catalog under NSN 4730-00-054-1027. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.