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Technical Data Sheet
PartsTable / MRO / 21181
21181 ✓ Verified by PartsTable
Trust · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

Compact speaker set with 8 Watt (4W RMS) output power<br><b>Key features</b><br>- 8W peak power (4 Watt RMS)<br>- Compact size, big sound<br>- USB powered: no wall power needed<br>- In-line volume control. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-00-167-6045, 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→ 21181
NSN: 4810-00-167-6045
FSC: 4810
CAGE: 16780 — EATON AEROSPACE LLC (USA)
SPECIFICATIONS
colorYELLOW OVERALL
materialCOPPER ALLOY OVERALL
nut_styleHEXAGON
body_width3.750 INCHES NOMINAL IN
nut_height0.250 INCHES NOMINAL IN
body_height8.750 INCHES NOMINAL IN
body_length4.500 INCHES NOMINAL IN
recess_depth0.094 INCHES NOMINAL IN
thread_class3B
hole_diameter0.281 INCHES NOMINAL IN
overall_width0.875 INCHES NOMINAL IN
physical_formGELATIN
NSN4810-00-167-6045
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21181 · Trust ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
21181Interchangeable
interchangeable cross-reference
interchangeable
0839-0008Interchangeable
interchangeable cross-reference
interchangeable
31D4Interchangeable
interchangeable cross-reference
interchangeable
D203Interchangeable
interchangeable cross-reference
interchangeable
21181CInterchangeable
interchangeable cross-reference
interchangeable
4321181Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21181?
21181 is a CULTURE MEDIUM,SALMONELLA SHIGEL manufactured by Trust. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21181?
There are 8 known substitutes for 21181: 21181, 0839-0008, 31D4 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21181?
21181 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-00-167-6045. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026