20794-13
View detailed technical data, stock status, and sourcing information for: 20794-13
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An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes:undercut for thread relief). It is no. 0 (0.060 in.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below no. 10 (0.190 in.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also bolt, externally relieved body and bolt, internal wrenching.
0.470 inches minimum and 0.490 inches maximum fastener length, 2a thread class, pan head style, right-hand thread direction, 0.155 inches minimum and 0.185 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
- 2a
- Thread Direction
- right-hand
- Thread Length
- 0.155 inches minimum and 0.185 inches maximum
- Fastener Length
- 0.470 inches minimum and 0.490 inches maximum
- Head Style
- pan
- Head Diameter
- 0.205 inches minimum and 0.219 inches maximum
- Head Height
- 0.070 inches minimum and 0.080 inches maximum
- First Diameter From Head
- 0.085 inches minimum and 0.095 inches maximum
- Distance From Largest Bearing Surface Of Head To End Of First Diameter
- 0.305 inches minimum and 0.315 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.112 inches
- Thread Quantity Per Inch
- 40
- Externally Relieved Body Diameter Quantity
- 1
- Material
- steel comp 304l or steel comp 316l or steel comp 302 or steel comp 347 or steel comp 321 or steel comp 317 or steel comp 316 or steel comp 310 or steel comp 309 or steel comp 305 or steel comp 304 overall
- Material Document And Classification
- qq-s-763 300 series cond a fed spec all material responses overall
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- qq-p-35 type 2 fed spec single treatment response overall
- Thread Series Designator
- unc
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 |
|---|---|
| 20794-13 | Externally Relieved Body Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-004-3161?
Does the NSN 5305-00-004-3161 have a Schedule B code assigned?
Does NSN 5305-00-004-3161 require demilitarization?
Does NSN 5305-00-004-3161 contain precious materials?
Does NSN 5305-00-004-3161 contain hazardous materials?
When the NSN 5305-00-004-3161 was assigned to the Federal Catalog?
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