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American Aviation Parts datum · avionics

Instrument Accessories

ATA · 278 parts

Instrument Accessories brings together the parts, hardware, and consumables your maintenance program calls out for this system. Each listing shows its condition and the certification paperwork available for that part, from new PMA/OEM stock to overhauled and serviceable units, so you can confirm airworthiness before buying and request an FAA 8130-3 or manufacturer Certificate of Conformance where one applies.
Nut Ring/Shell size 8, 4-40 Aluminum alloy-anodized, self locking nut, steel cadmium plated. FSU-8
Nut Ring/Shell size 8, 4-40 Aluminum alloy-anodized, self locking nut, steel cadmium plated. FSU-8
NE
P/N FSU-8 Fastener Specialty
$53.11
Price and availability checked Oct 23, 2026 MST
In stock
3 Ati Hole Mount Outside DIMENSIONS:5 X 5. Inside DIMENSIONS;3 1/4 X 3 1/4. Corners Cutoff At A 45 Degree Angle. THICKNESS:1/16. HM-1
3 Ati Hole Mount Outside DIMENSIONS:5 X 5. Inside DIMENSIONS;3 1/4 X 3 1/4. Corners Cutoff At A 45 Degree Angle. THICKNESS:1/16. HM-1
NE
P/N HM-1 Ati
$139.05
Price and availability checked Oct 23, 2026 MST
Backorder
1/2 Ati Hole Mount, Outside DIMENSION:3 3/16H X 5 3/16L Inside DIMENSION:3 1/4W X 1 1/4H Thickness: 1/16. HM-2
1/2 Ati Hole Mount, Outside DIMENSION:3 3/16H X 5 3/16L Inside DIMENSION:3 1/4W X 1 1/4H Thickness: 1/16. HM-2
NE
P/N HM-2 Ati
$13.77
Price and availability checked Oct 23, 2026 MST
In stock
632 Instrument Install Tool
632 Instrument Install Tool
NE
P/N IIT-632 Edmo
Quote only
In stock
832 Instrument Install Tool
832 Instrument Install Tool
NE
P/N IIT-832 Edmo
$38.93
Price and availability checked Oct 23, 2026 MST
In stock
MD32 Magnetometer/For use with MD302 Standby Alittude Module. 7-32 Vdc, Arinc 429 custom format, Altitude 55,000ft.  Includes Connector kit and install manual 6420032-1
MD32 Magnetometer/For use with MD302 Standby Alittude Module. 7-32 Vdc, Arinc 429 custom format, Altitude 55,000ft. Includes Connector kit and install manual 6420032-1
NE
P/N 6420032-1 Mid-Continent
$1,575.28
Price and availability checked Oct 23, 2026 MST
Backorder
Instrument Mounting Kit/Nut Ring/3.125/Includes Black Brass Mounting Screws W/Nylon Washers MK-01
Instrument Mounting Kit/Nut Ring/3.125/Includes Black Brass Mounting Screws W/Nylon Washers MK-01
NE
P/N MK-01 ACK Technologies
$19.28
Price and availability checked Oct 23, 2026 MST
In stock
Instrument Mounting Kit/Nut Ring/3.125/W/Cutout/Includes Black Brass Mounting Screws & Nylon Washers MK-02
Instrument Mounting Kit/Nut Ring/3.125/W/Cutout/Includes Black Brass Mounting Screws & Nylon Washers MK-02
NE
P/N MK-02 ACK Technologies
$19.28
Price and availability checked Oct 23, 2026 MST
In stock
Instrument Mounting Kit/Nut Ring/2.25/Includes Black Brass Mounting Screws & Nylon Washers MK-03
Instrument Mounting Kit/Nut Ring/2.25/Includes Black Brass Mounting Screws & Nylon Washers MK-03
NE
P/N MK-03 ACK Technologies
$19.28
Price and availability checked Oct 23, 2026 MST
In stock
3ATI Instrument Mounting Kit MK-3ATI
3ATI Instrument Mounting Kit MK-3ATI
NE
P/N MK-3ATI Ati
$24.01
Price and availability checked Oct 23, 2026 MST
Backorder
3 1/8 Raised Face Cover Plate MK-620
3 1/8 Raised Face Cover Plate MK-620
NE
P/N MK-620 Edmo
$21.83
Price and availability checked Oct 23, 2026 MST
In stock
3 1/8 Alt/Vsi Raised Face Cov MK-621
3 1/8 Alt/Vsi Raised Face Cov MK-621
NE
P/N MK-621 Edmo
$21.83
Price and availability checked Oct 23, 2026 MST
In stock
3 1/8-2 1/4 Raised Reducer MK-623
3 1/8-2 1/4 Raised Reducer MK-623
NE
P/N MK-623 Edmo
$29.03
Price and availability checked Oct 23, 2026 MST
In stock
2 1/4 To Raised Face Cover Pl MK-624
2 1/4 To Raised Face Cover Pl MK-624
NE
P/N MK-624 Edmo
$21.83
Price and availability checked Oct 23, 2026 MST
In stock
Cdi Blank Plate — photo coming soon
Cdi Blank Plate
NE
P/N MK-629 Edmo
$55.29
Price and availability checked Oct 23, 2026 MST
Backorder
KI525 Raised Face Cover Plate MK-630
KI525 Raised Face Cover Plate MK-630
NE
P/N MK-630 Edmo
$23.57
Price and availability checked Oct 23, 2026 MST
Backorder
KI525-2 1/4 Raised Reducer MK-631 — photo coming soon
KI525-2 1/4 Raised Reducer MK-631
NE
P/N MK-631 Edmo
$37.76
Price and availability checked Oct 23, 2026 MST
Backorder
KI525-3 1/8 Raised Reducer MK-632 — photo coming soon
KI525-3 1/8 Raised Reducer MK-632
NE
P/N MK-632 Edmo
$29.03
Price and availability checked Oct 23, 2026 MST
In stock
KI525-3ATI Raised Face Reducer MK-633
KI525-3ATI Raised Face Reducer MK-633
NE
P/N MK-633 Ati
$31.94
Price and availability checked Oct 23, 2026 MST
Backorder
3ATI Raised Face Cover Plate MK-640
3ATI Raised Face Cover Plate MK-640
NE
P/N MK-640 Ati
$21.83
Price and availability checked Oct 23, 2026 MST
In stock
3ATI-2 1/4 Raised Face Reduce MK-641
3ATI-2 1/4 Raised Face Reduce MK-641
NE
P/N MK-641 Ati
$29.03
Price and availability checked Oct 23, 2026 MST
Backorder
3ATI-3 1/8 Raised Face Reduce MK-642
3ATI-3 1/8 Raised Face Reduce MK-642
NE
P/N MK-642 Ati
$29.03
Price and availability checked Oct 23, 2026 MST
In stock
KI525 Instrument Mounting Kit Mk-Ki 525
KI525 Instrument Mounting Kit Mk-Ki 525
NE
P/N MK-KI 525 Quality Air Components
$22.55
Price and availability checked Oct 23, 2026 MST
In stock
Clamp/Round, open size: 1.968 closed size: 1.89 depth: 1, aluminum, anodized finish. Boeing certified. MS28042-1A
Clamp/Round, open size: 1.968 closed size: 1.89 depth: 1, aluminum, anodized finish. Boeing certified. MS28042-1A
NE
P/N MS28042-1A
$48.02
Price and availability checked Oct 23, 2026 MST
In stock