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Technical Data Sheet
PartsTable / MRO / 22121
22121 ✓ 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 RESISTOR,CHIP,FIXED,FILM is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, body_style: WAVEGUIDE TYPE, bore_shape: STRAIGHT, power_rating: 1.0 WATTS AVERAGE, thread_class: 3A SINGLE PRESSURE CONNECTION A, bore_diameter: 25.00 MILLIMETERS NOMINAL MM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-011-8539, 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→ 22121
NSN: 4730-00-011-8539
FSC: 4730
CAGE: 12472 — LOCKWOOD CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
body_styleWAVEGUIDE TYPE
bore_shapeSTRAIGHT
power_rating1.0 WATTS AVERAGE
thread_class3A SINGLE PRESSURE CONNECTION A
bore_diameter25.00 MILLIMETERS NOMINAL MM
overall_width3.688 INCHES NOMINAL IN
seal_quantity2
terminal_typeCONNECTOR, RECEPTACLE
load_directionRADIAL
overall_height2.984 INCHES MINIMUM AND 3.016 INCHES MAXIMUM IN
overall_length3.750 INCHES MAXIMUM IN
NSN4730-00-011-8539
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 22121 · 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 29
22121PA6 3-4INInterchangeable
interchangeable cross-reference
interchangeable
PEF90S/4P-12Interchangeable
interchangeable cross-reference
interchangeable
Z128Interchangeable
interchangeable cross-reference
interchangeable
25G227Interchangeable
interchangeable cross-reference
interchangeable
1098Interchangeable
interchangeable cross-reference
interchangeable
S 1019Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 22121?
22121 is a RESISTOR,CHIP,FIXED,FILM. It is classified as a MRO (MRO_GENERAL).
What parts can replace 22121?
There are 29 known substitutes for 22121: 22121PA6 3-4IN, PEF90S/4P-12, Z128 and 26 more. Substitute compatibility should be verified for your specific system.
Is 22121 still available?
22121 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