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Model / MPN: C851166-1 | NSN: 5355-00-616-7669
ITAR Registered seal

An item designed to transmit manual, rotary or linear motion to other devices. May include detachable or nondetachable stud (shaft), pointer, or skirt. It may have reference markings in the form of dots, arrows, hairlines, and/or symbols which may be used in conjunction with a calibrated panel, vernier indicator, and the like to indicate the position or motion of items. For items having spokes or simulated spokes radiating from near the center to near the outside rim of the item and relatively thin round disk-shaped items 3 inches (76.2 mm) in diameter or over, see handwheel. For items calibrated in units or series of divisions to denote relative positioning of devices see dial, control. Excludes doorknob; and handle (as modified).

Product Details
NATO Stock Number
Sold in multiples of
1 EA
Inside Diameter
Between 0.252 inches and 0.254 inches
Counterbore Diameter
0.640 inches
Counterbore Depth
0.320 inches
Setscrew Hole Quantity
Distance From Hole Center To Knob/skirt Base
0.484 inches
Overall Depth
0.730 inches
Gripping Surface Condition
Grip aid
Shaft Accommodation Style
Outside Diameter
Between 0.890 inches and 0.930 inches
Skirt Style
Attachment Method
Overall Thickness
Between 0.980 inches and 1.040 inches
End Application
Sonar sets, an/bqs-14a/15, helicopter, mh-53e, sonar acoustic miscellaneous, helicopter, advance attack, ah-1w, support equipment, b-52 aircraft, landing system automatic carrier, dual channel, tactical air opns module (an/tyq (23), airborne mobile dir air spt ctl (2id), (02m jul83)(an/uyq-3a), aircraft, c-2a (reprocured)
Material Transparency
Screw Drive Type
Hexagon socket
Thready Qty Per Inch (tpi)
32 screw hole
Thread Size
0.164 inches screw hole
Skirt Outside Diameter
0.845 inches
Skirt Design
Black, lusterless
Style Designator
Thread Series Designator
Unc screw hole
C851166 Series Parts
Solicitation Description Qty UOM Close Date
SPE5E320T1060 Knob 30 EA 11/12/2019

Pricing and Availability

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C851166-1 Cross Reference
  • 512-22-905
  • 90-2-2G
  • MS91528-2D2BE
  • MS91528-2D5B
  • 509&2&2M
  • MS91528-2D2B
  • 145005-27
  • 2D2B
  • 509-2-2M
  • 222729-203
  • 533B74-5
  • 91B4MA
  • NASM91528
  • 231-1057
  • 231-1057G17
  • 90-2-2G
  • ZD231-1057G17REV9
  • ZS231-1057G17
  • 258N9151028-1
  • 42A2
  • 42A2-2
  • 115935-059
  • 4147600-007
  • 1005G17
  • 231-1057G17
  • MS91528-2D2B
  • MS91528-2D2D
  • 140403-146
  • 231-1057P17
  • 1668344-2
  • 231-1057G17
  • 1005G17
  • DS90-2-2G
  • DS90-2-2G
  • KMS9D2DL
  • KMS9D2DL
  • KMS9D2L
  • KMS9D2DL
  • 145-005-27
  • 2D2D
  • 9L2RS
  • 5315006167669