4-40UNC-3AX0.312CRES
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An item designed to expedite or simplify the connection of two or more electrical conductors without bringing them to a fixed point such as a binding post or terminal. It may have a separate tubular shaped piece of nonmetallic, flexible material designed to be slipped over the crimped first piece to seal the conductor joint through heat sealing.
3a thread class, knurled no. 1 head style, 0.312 inches nominal thread length, 0.312 inches nominal fastener length, right-hand thread direction
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
- 0.312 inches nominal
- Fastener Length
- 0.312 inches nominal
- Head Style
- knurled no. 1
- Head Diameter
- 0.176 inches minimum and 0.183 inches maximum
- Head Height
- 0.108 inches minimum and 0.112 inches maximum
- Internal Drive Style
- hexagon
- Nominal Thread Diameter
- 0.112 inches
- Width Across Flats
- 0.094 inches minimum and 0.095 inches maximum
- Thread Quantity Per Inch
- 40
- Minimum Tensile Strength
- 80000 pounds per square inch
- Hardness Rating
- 39.0 rockwell c minimum and 45.0 rockwell c maximum overall
- Material
- steel comp 302 or steel comp 304 or steel comp 305 or steel comp 316 or steel comp 384 overall
- Material Document And Classification
- 66 fed std all material responses overall
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- qq-p-35 fed spec single treatment response overall
- Supplementary Features
- fscm 80204-ansi b18.3 table 3 size 4
- Thread Series Designator
- unc
- Specification/Standard Data
- 81348-ff-s-86 government specification
- Nondefinitive Spec/Std Data
- 6 type and 4-40 size and 5/16in. length and 3assjseunc class
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 |
|---|---|
| 0.112-40-3AX0.312 HEXSOCKET CRES | Socket Head Cap Screw |
| 4-40-3A X 5/16 HEX S0CKETHD CRES | Socket Head Cap Screw |
| 4-40UNC-3AX0.312CRES | Socket Head Cap Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-219-9605?
Does the NSN 5305-01-219-9605 have a Schedule B code assigned?
Does NSN 5305-01-219-9605 require demilitarization?
Does NSN 5305-01-219-9605 contain precious materials?
Does NSN 5305-01-219-9605 contain hazardous materials?
When the NSN 5305-01-219-9605 was assigned to the Federal Catalog?
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