1240-00-916-0285

Find complete technical information, availability, and procurement data for: 1240-00-916-0285

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1240-00-916-0285
Federal Supply Group
Fire Control Equipment
Federal Supply Classification
1240 Optical Sighting and Ranging Equipment
National Stock Number
1240-00-916-0285
Item Name Code
22451
Assigment Date
01/26/1966 (60 years ago)

A thin flat metal or plastic item of various peripheral shapes having a solid or laminated cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole and having a solid rectangular cross-section use disk, solid, plain. Items with either (1) a solid (not laminated) cross-section, or (2) a non-separable laminated cross-section with one hole centrally located, must have a thickness less than 0.006 inch (0.152 mm) for items less than 1/4 inch (6.35 mm) outside diameter or shortest distance across peripheral flats, and less than 0.016 inch (0.406 mm) for items 1/4 inch (6.35 mm) or more outside diameter, or shortest distance across peripheral flats. For items with thickness greater than those indicated above, see spacer, plate; washer, flat and spacer, ring. When thickness and/or outside diameter or shortest distance across peripheral flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance. See also shim stock, laminated; shim stock assortment, gasket; and bearing, washer, thrust.

4.100 inches minimum and 4.120 inches maximum recess diameter, 0.195 inches nominal overall length, 0.070 inches nominal width, 4 hole or slot quantity, 4.280 inches nominal hole diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Hole Diameter
4.280 inches nominal
Width
0.070 inches nominal
Overall Length
0.195 inches nominal
Hole Or Slot Quantity
4
Recess Diameter
4.100 inches minimum and 4.120 inches maximum
Recess Depth
0.180 inches nominal
Thread Size
4.375 in.-32 uns-2b
Depth
0.035 inches nominal
Drive Type
slotted
Drive Facility Angular Spacing In Deg
90.0
Guide Design
thread chamfer
Guide Location
edge opposite drive edge
Internal Annular Serration
not provided
Setscrew Notch
not provided
Hole Chamfer Angle In Deg
45.0
Hole Chamfer Diameter
4.220 inches minimum and 4.240 inches maximum
Material
aluminum alloy 6061
Material Document And Classification
ww-t-700/6,t6,type1 fed spec single material response
Style Designator
recessed
Fsc Application Data
aircraft gunnery fire control system

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
701C983P1 Optical Element Retainer

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 1240-00-916-0285?
The FSCG of the NSN 1240-00-916-0285 is 1240
Does the NSN 1240-00-916-0285 have a Schedule B code assigned?
Yes, the Schedule B code is 9803200000
Does NSN 1240-00-916-0285 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 1240-00-916-0285 contain precious materials?
Item does not contain precious metal.
Does NSN 1240-00-916-0285 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 1240-00-916-0285 was assigned to the Federal Catalog?
It was assigned 60 years ago, on Wed, Jan 26, 1966

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