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NAS1137-25

View detailed technical data, stock status, and sourcing information for: NAS1137-25

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NAS1137-25
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-01-183-6986
Item Name Code
29294
Assigment Date
07/09/1984 (42 years ago)

A headed, threaded fastening device over which may be assembled; (1) a stand-off; (2) a flanged bushing with washer(s) and/or a shouldered bushing without a flange, or it may have an internally threaded sleeve that is an integral part of the screw; a washer and an externally thread self-locking bushing that is driven by an inserted driver. Attached to panel by threaded bushing or by flaring end of stand-off, or bushing. Used in conjunction with a speed nut, nut plate, or driven into a threaded hole in the item that the panel is fastened to. May be spring loaded.

right-hand thread direction, 2.000 inches minimum and 2.030 inches maximum fastener length, 3a thread class, pan head style, 0.428 inches minimum and 0.478 inches maximum thread length

Product Characteristics

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

Thread Class
3a
Thread Direction
right-hand
Thread Length
0.428 inches minimum and 0.478 inches maximum
Fastener Length
2.000 inches minimum and 2.030 inches maximum
Head Style
pan
Head Diameter
0.838 inches minimum and 0.863 inches maximum
Head Height
0.286 inches minimum and 0.304 inches maximum
Grip Diameter
0.4360 inches minimum and 0.4370 inches maximum
Internal Drive Style
offset cruciform (torque set)
Nominal Thread Diameter
0.438 inches
Grip Length
1.552 inches minimum and 1.572 inches maximum
Thread Quantity Per Inch
20
Minimum Tensile Strength
160000 pounds per square inch
Hardness Rating
36.0 rockwell c minimum and 40.0 rockwell c maximum overall
Surface Finish
32.0 microinches bearing surface of head
Surface Finish
32.0 microinches grip
Surface Finish
32.0 microinches threads
Material
steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 8735 or steel comp 6150 overall
Surface Treatment
cadmium and chromate overall
Surface Treatment Document And Classification
qq-p-416,type 2,class 2 fed spec single treatment response overall
Thread Series Designator
unjf
Specification/Standard Data
80205-nas1137 professional/industrial association standard

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
NAS1137-25 Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-183-6986?
The FSCG of the NSN 5305-01-183-6986 is 5305
Does the NSN 5305-01-183-6986 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-183-6986 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 5305-01-183-6986 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-01-183-6986 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 5305-01-183-6986 was assigned to the Federal Catalog?
It was assigned 42 years ago, on Mon, Jul 9, 1984

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