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Technical Data Sheet
PartsTable / COMPONENT / 18639
18639 ✓ Verified by PartsTable
Trust · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

Easy to mount tablet holder for your car headrest, to watch movies on the backseat. Key specifications include part_name_assigned_by_controlling_agency: SAFETY, REVERSIBLE, MK22. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-147-3739, 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
18639
NSN: 2805-00-147-3739
FSC: 2805
CAGE: 96046 — CRANE PUMPS & SYSTEMS PFT CORP DIV CRANE PUMPS & SYSTEM PFT CORP. (USA)
SPECIFICATIONS
special_featuresSAFETY, REVERSIBLE, MK22, SAFETY SELECTOR LEVER, PART OF LOWER RECEIVER ASSEMBLY MK22. NHA MK22 MOD 0, NSN 1005-01-680-5221.
part_name_assigned_by_controlling_agencySAFETY, REVERSIBLE, MK22
NSN2805-00-147-3739
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Trust SAFETY,SMALL ARMS TITLE COMPONENT PN 18639 MFR Trust SAFETY,SMALL ARMS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
864EBRInterchangeable
interchangeable cross-reference
interchangeable
4225Interchangeable
interchangeable cross-reference
interchangeable
4425Interchangeable
interchangeable cross-reference
interchangeable
49753Interchangeable
interchangeable cross-reference
interchangeable
404Interchangeable
interchangeable cross-reference
interchangeable
70453Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 18639?
18639 is a SAFETY,SMALL ARMS manufactured by Trust.
What parts can replace 18639?
There are 24 known substitutes for 18639: 864EBR, 4225, 4425 and 21 more. Substitute compatibility should be verified for your specific system.
Is 18639 still available?
18639 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