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
P/N FSU-8
NE
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
P/N HM-1
NE
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
P/N HM-2
NE
Ati
$13.77
Price and availability checked Oct 23, 2026 MST
In stock
832 Instrument Install Tool
P/N IIT-832
NE
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
P/N 6420032-1
NE
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
P/N MK-01
NE
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
P/N MK-02
NE
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
P/N MK-03
NE
ACK Technologies
$19.28
Price and availability checked Oct 23, 2026 MST
In stock
3ATI Instrument Mounting Kit MK-3ATI
P/N MK-3ATI
NE
Ati
$24.01
Price and availability checked Oct 23, 2026 MST
Backorder
3 1/8 Raised Face Cover Plate MK-620
P/N MK-620
NE
Edmo
$21.83
Price and availability checked Oct 23, 2026 MST
In stock
3 1/8 Alt/Vsi Raised Face Cov MK-621
P/N MK-621
NE
Edmo
$21.83
Price and availability checked Oct 23, 2026 MST
In stock
3 1/8-2 1/4 Raised Reducer MK-623
P/N MK-623
NE
Edmo
$29.03
Price and availability checked Oct 23, 2026 MST
In stock
2 1/4 To Raised Face Cover Pl MK-624
P/N MK-624
NE
Edmo
$21.83
Price and availability checked Oct 23, 2026 MST
In stock
KI525 Raised Face Cover Plate MK-630
P/N MK-630
NE
Edmo
$23.57
Price and availability checked Oct 23, 2026 MST
Backorder
KI525-2 1/4 Raised Reducer MK-631
P/N MK-631
NE
Edmo
$37.76
Price and availability checked Oct 23, 2026 MST
Backorder
KI525-3 1/8 Raised Reducer MK-632
P/N MK-632
NE
Edmo
$29.03
Price and availability checked Oct 23, 2026 MST
In stock
KI525-3ATI Raised Face Reducer MK-633
P/N MK-633
NE
Ati
$31.94
Price and availability checked Oct 23, 2026 MST
Backorder
3ATI Raised Face Cover Plate MK-640
P/N MK-640
NE
Ati
$21.83
Price and availability checked Oct 23, 2026 MST
In stock
3ATI-2 1/4 Raised Face Reduce MK-641
P/N MK-641
NE
Ati
$29.03
Price and availability checked Oct 23, 2026 MST
Backorder
3ATI-3 1/8 Raised Face Reduce MK-642
P/N MK-642
NE
Ati
$29.03
Price and availability checked Oct 23, 2026 MST
In stock
KI525 Instrument Mounting Kit Mk-Ki 525
P/N MK-KI 525
NE
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
P/N MS28042-1A
NE
$48.02
Price and availability checked Oct 23, 2026 MST
In stock
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
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
NE
P/N HM-2
Ati
$13.77
Price and availability checked Oct 23, 2026 MST
In stock
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
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
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
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
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
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
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
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
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
NE
P/N MK-624
Edmo
$21.83
Price and availability checked Oct 23, 2026 MST
In stock
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
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
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
NE
P/N MK-633
Ati
$31.94
Price and availability checked Oct 23, 2026 MST
Backorder
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
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
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
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
NE
P/N MS28042-1A
$48.02
Price and availability checked Oct 23, 2026 MST
In stock