PartsTable
Technical Data Sheet
PartsTable / MRO / 21494
21494 ✓ 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

Universal VR glasses: insert your smartphone and enjoy immersive VR games, movies and videos in astonishing 3D reality<br><br>- Enjoy the 3D Virtual Reality experience with your own phone<br>- Works with every smartphone up to 6"<br>- Watch 3D and 360° videos on YouTube and other video services<br>- Play over 100 VR games already available in Apple App Store and Google Play store<br>- Adjustable head strap, pupil distance (IPD) and focus distance<br>- Comfortable soft rubber padding<br>- Holes for all cable connections to your phone (USB, audio, charging) This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-063-8820, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
MRO→ MRO_GENERAL→ 21494
NSN: 4820-00-063-8820
FSC: 4820
CAGE: 89326 — BARKSDALE, INC (USA)
SPECIFICATIONS
diameter0.875 INCHES NOMINAL IN
materialWOOD OVERALL
shank_typeSTRAIGHT ROUND W/SQUARE END
body_length1.075 INCHES NOMINAL IN
reamer_typeTAPER SOCKET FINISHING
flute_designSTRAIGHT
flute_length4.250 INCHES NOMINAL IN
thread_class2A SINGLE THREADED BUSHING A
overall_width2.705 INCHES NOMINAL IN
terminal_typeWIRE LEAD
thread_length0.375 INCHES NOMINAL SINGLE THREADED BUSHING IN
overall_height2.750 INCHES NOMINAL IN
NSN4820-00-063-8820
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21494 · 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
KEY FEATURES
•
SEAT ANGLE IN DEG: 90.000 NOMINAL
•
SEATING SURFACE SHAPE: ANGULAR
•
MATERIAL: COPPER ALLOY OVERALL
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
TECHNICAL CHARACTERISTICS (FLIS)
SEAT ANGLE IN DEG90.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
MATERIALCOPPER ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
21494Interchangeable
interchangeable cross-reference
interchangeable
26940-001Interchangeable
interchangeable cross-reference
interchangeable
644Interchangeable
interchangeable cross-reference
interchangeable
02057032Interchangeable
interchangeable cross-reference
interchangeable
76322Interchangeable
interchangeable cross-reference
interchangeable
444620Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21494?
21494 is a RECORDER SUBASSEMBLY manufactured by Trust. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21494?
There are 10 known substitutes for 21494: 21494, 26940-001, 644 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21494?
21494 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-063-8820. 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