PartsTable
Technical Data Sheet
S903 ✓ Verified by PartsTable
· HOSE FITTING
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 SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: SILICON SEMICONDUCTOR, body_type: SOLID, head_type: SOLID, overall_length: 0.254 INCHES NOMINAL IN, drive_end_style: RAISED SQUARE, mounting_method: TERMINAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-202-9170, 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
S903
NSN: 4730-00-202-9170
FSC: 4730
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
materialSILICON SEMICONDUCTOR
body_typeSOLID
head_typeSOLID
overall_length0.254 INCHES NOMINAL IN
drive_end_styleRAISED SQUARE
mounting_methodTERMINAL
terminal_length1.000 INCHES MINIMUM IN
connection_stylePLAIN
overall_diameter0.074 INCHES NOMINAL IN
special_featuresWEAPON SYSTEM ESSENTIAL
thread_directionRIGHT-HAND EXTERNAL
features_providedBURN IN AND HERMETICALLY SEALED CASE
NSN4730-00-202-9170
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: S903 · 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
MATERIAL: STEEL OVERALL
THREAD SERIES DESIGNATOR: NPTF EXTERNAL
SURFACE TREATMENT: ZINC OVERALL
THREAD DIRECTION: RIGHT-HAND EXTERNAL
HEAD TYPE: SOLID
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.125 INCHES IN
CONNECTION STYLE: PLAIN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORNPTF EXTERNAL
SURFACE TREATMENTZINC OVERALL
THREAD DIRECTIONRIGHT-HAND EXTERNAL
HEAD TYPESOLID
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.125 INCHES IN
END ITEM IDENTIFICATIONHARNISCHFEGER CORP.;MODEL M320T2,CRANE TRUCK MOUNTED,NSN 3810-00-151-4431; CARGO SYSTEM,463L; SUPPORT EQUIPMENT FOR B-52 AND B-1 AIRCRAFT; VEHICLE,AIRCRAFT REFUELER R-14; TRACTOR, FLIGHTLINE TOWING
CONNECTION STYLEPLAIN
BODY TYPESOLID
DRIVE END STYLERAISED SQUARE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
65X5Interchangeable
interchangeable cross-reference
interchangeable
J512Interchangeable
interchangeable cross-reference
interchangeable
102-50005Interchangeable
interchangeable cross-reference
interchangeable
898176Interchangeable
interchangeable cross-reference
interchangeable
13F2Interchangeable
interchangeable cross-reference
interchangeable
FLR414Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S903?
S903 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace S903?
There are 18 known substitutes for S903: 65X5, J512, 102-50005 and 15 more. Substitute compatibility should be verified for your specific system.
Is S903 still available?
S903 is currently cancelled.
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