4-40UNC2A3/16LGANSIB18.6.3FLATHD
View detailed technical data, stock status, and sourcing information for: 4-40UNC2A3/16LGANSIB18.6.3FLATHD
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Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-01-226-0786
Item Name Code
06657
Assigment Date
02/12/1986 (40 years ago)
flat countersunk head style, 0.188 inches nominal fastener length, 2a thread class, right-hand thread direction, 0.139 inches nominal 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
- 2a
- Thread Direction
- right-hand
- Thread Length
- 0.139 inches nominal
- Fastener Length
- 0.188 inches nominal
- Head Style
- flat countersunk
- Head Diameter
- 0.191 inches minimum and 0.225 inches maximum
- Internal Drive Style
- cross recess type ii
- Nominal Thread Diameter
- 0.112 inches
- Thread Quantity Per Inch
- 40
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Screw Material
- steel comp 301 or steel comp 430
- Screw Material Document And Classification
- ifi-104 assn std all material responses
- Screw Surface Treatment
- passivate
- Supplementary Features
- arinc-king pt list 006-8024-05
- Thread Series Designator
- unc
- Specification/Standard Data
- 22373-089-6008 manufacturers specification control and 80204-ansi b18.6.3 professional/industrial association standard
- Nondefinitive Spec/Std Data
- 2 table and 4-40 size and 3/16in. length and stls/stl material
- Departure From Cited Document
- as modified by material
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 |
|---|---|
| 089-6008-03 | Machine Screw |
| 089K-6008-03 | Machine Screw |
| 4-40UNC2A3/16LGANSIB18.6.3FLATHD | Machine Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-226-0786?
The FSCG of the NSN 5305-01-226-0786 is 5305
Does the NSN 5305-01-226-0786 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-226-0786 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 5305-01-226-0786 contain precious materials?
Precious metal content is unknown
Does NSN 5305-01-226-0786 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 5305-01-226-0786 was assigned to the Federal Catalog?
It was assigned 40 years ago, on Wed, Feb 12, 1986
Professional Distribution
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