S944

View detailed technical data, stock status, and sourcing information for: S944

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S944
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-017-9841
Item Name Code
18257
Assigment Date
01/01/1961 (65 years ago)

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes:bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

2a thread class, 1.250 inches nominal fastener length, 1.000 inches minimum thread length, right-hand thread direction, hexagon head style

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
1.000 inches minimum
Fastener Length
1.250 inches nominal
Head Style
hexagon
Head Height
0.226 inches minimum and 0.243 inches maximum
Width Between Flats
0.551 inches minimum and 0.562 inches maximum
Nominal Thread Diameter
0.375 inches
Thread Quantity Per Inch
16
Minimum Tensile Strength
120000 pounds per square inch
Hardness Rating
23.0 rockwell c minimum and 30.0 rockwell c maximum overall
Material
steel overall
Thread Series Designator
unc
Nondefinitive Spec/Std Data
2 type and 10p style and 5 grade

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5305-00-292-5731 No Name Available 08/10/1966
5305-00-562-6579 No Name Available 11/28/1966

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175834 Hexagon Head Cap Screw
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802289 Hexagon Head Cap Screw
903631 Hexagon Head Cap Screw
BB6038 Hexagon Head Cap Screw
CC6X20 Hexagon Head Cap Screw
MS35295-62 Hexagon Head Cap Screw
Q1804 Hexagon Head Cap Screw
S103D Hexagon Head Cap Screw
S2610 Hexagon Head Cap Screw
S944 Hexagon Head Cap Screw
V4B101 Hexagon Head Cap Screw
X8-604 Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-017-9841?
The FSCG of the NSN 5305-00-017-9841 is 5305
Does the NSN 5305-00-017-9841 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-017-9841 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 5305-00-017-9841 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-017-9841 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 5305-00-017-9841 was assigned to the Federal Catalog?
It was assigned 65 years ago, on Sun, Jan 1, 1961

Professional Distribution

Certified to meet the strict requirements of defense, aerospace, and hazardous materials distribution.

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