PartsTable
Technical Data Sheet
21-291 ✓ Verified by PartsTable
Legrand · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Stranded for flexible routing, solid for conduit THHN/THWN dual-rated — check both tables
Ampacity depends on installation method
PRODUCT OVERVIEW

Mechanical gaming keyboard with quick responding GXT-White switches and full LED backlight<br><br>- Quick responding GXT-White switches that last up to 50 million keystrokes<br>- Dedicated Gaming mode for disabling the windows key and activating macro keys<br>- Full LED backlight with enhanced per-key illumination<br>- N-key rollover anti-ghosting.<br>- 1000hz polling rate and 5 ms response time<br>- On-board memory for programming 4 macro keys This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-542-6090, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
MRO MRO_GENERAL 21-291
NSN: 6145-00-542-6090
FSC: 6145
CAGE: 74298 — SPIRLING PRODUCTS CO (USA)
SPECIFICATIONS
inside_diameter2.500 INCHES NOMINAL IN
special_featuresTWO PART PETRI DISH; ONE PART CONTAINS TRYPTICASE SOY AGAR WITH 5 PERCENT SHEEP BLOOD; OTHER PART CONTAINS MACCONKEY AGAR; PRIMARY CONTAINER TYPE:PETRI DISH
style_designatorTWO BEND
features_providedENLARGED ENDS
end_item_identificationNAVISTAR S SERIES TRUCKS MODEL 1626,1654,1723,1724,1734,1754,1823,1824,1853,1824-4X4,1854,1954,1925,1955,1954-6X6,1955,2125,2155,F2125,F1954,F1924-6X6,1753
total_primary_container_quantity100
part_name_assigned_by_controlling_agencyCULTURE MEDIA SOYBEAN CASEIN DIGEST BLOOD AGAR&MACCONKEY AGAR100
NSN6145-00-542-6090
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: 21-291 · Legrand ⚠ VERIFY BEFORE ORDERING Ampacity depends on installation method — conduit ≠ free air ≠ underground. Same wire, different ratings. AWG sizing is inverse — smaller number = thicker wire (4 AWG > 12 AWG) ✓ BROKER TIP Stranded = flexible routing and vibration resistance. Solid = fixed conduit runs only. THHN/THWN = dual rated — check both dry and wet ampacity tables PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
VOLTAGE RATING: 2300.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR
CONDUCTOR ARRANGEMENT AND QUANTITY: 1 COAXIAL
ELECTRICAL RESISTANCE: 75.0 OHMS IMPEDANCE
CROSS-SECTIONAL SHAPE STYLE: ROUND
CROSS SECTION OUTSIDE DIAMETER: 0.242 INCHES NOMINAL IN
CONDUCTOR FORM: SOLID SINGLE CONDUCTOR
CONDUCTOR QUANTITY: 1
NOMINAL CAPACITANCE IN PICOFARADS: 21.0 PER FOOT
TECHNICAL CHARACTERISTICS (FLIS)
VOLTAGE RATING2300.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR
CONDUCTOR ARRANGEMENT AND QUANTITY1 COAXIAL
ELECTRICAL RESISTANCE75.0 OHMS IMPEDANCE
CROSS-SECTIONAL SHAPE STYLEROUND
CROSS SECTION OUTSIDE DIAMETER0.242 INCHES NOMINAL IN
CONDUCTOR FORMSOLID SINGLE CONDUCTOR
CONDUCTOR QUANTITY1
NOMINAL CAPACITANCE IN PICOFARADS21.0 PER FOOT
VOLTAGE RATING2300.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR
CONDUCTOR ARRANGEMENT AND QUANTITY1 COAXIAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
MIL-DTL-17/75Upgraded Successor
successor cross-reference
successor
M17/164-00002Upgraded Successor
successor cross-reference
successor
M17/75-RG365Upgraded Successor
successor cross-reference
successor
PP15133-8Upgraded Successor
successor cross-reference
successor
425-1544-00Upgraded Successor
successor cross-reference
successor
MIL-DTL-17/93Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21-291?
21-291 is a TRANSFORMER,AUDIO FREQUENCY manufactured by Legrand. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21-291?
There are 29 known substitutes for 21-291: MIL-DTL-17/75, M17/164-00002, M17/75-RG365 and 26 more. Substitute compatibility should be verified for your specific system.
Is 21-291 still available?
21-291 is currently cancelled.
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