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31981 — SUPPORT,STRUCTURAL COMPONENT,AIR

✓ Government record, cited
Freecom · COMPONENT
PRODUCT OVERVIEW

31981: SUPPORT,STRUCTURAL COMPONENT,AIR.

External multimedia network hard drive with UPnP support and BitTorrent client. Ultrafast Gigabit LAN interface for easy connection to network router or switch. -High-end Network Attached Storage.

-Easy connection to your network router or switch, easy installation via the included Network Storage Assistant, no in-depth network knowlegde needed. -The central storage location for all your multimedia files. -UPnP and DLNA Certified - seamless connection with UPnP/DLNA compliant multimedia playback devices.

-BitTorrent client - download fi les directly to the drive, no need for your computer to remain switched on while downloading. -Access your data from any computer within your computer network or securely via internet. -Assign usernames and passwords to control access to specific folders and files on the drive by different users.

-Fast network connection via Gigabit LAN (1000Mbps) - also connects to 100 & 10Mbps networks. -Uses TCP/IP protocol, the comm This part is cataloged in the U.S. Government catalog under NSN 9540-00-406-7380, indicating validated use in U.S.

government and defense logistics supply chains.

WHERE IT FITS
31981
NSN: 9540-00-406-7380
NIINs: 004067380, 006521518, 012102758, 013131129
FSC: 9540 — Structural Shapes, Nonferrous Base Metal
CAGE: 77783 — ALCOA/REYNOLDS METALS COMPANY (USA)
SPECIFICATIONS
overall_length5.188 INCHES NOMINAL IN
major_componentsSHAFT
overall_diameter1.358 INCHES MINIMUM AND 1.359 INCHES MAXIMUM IN
NSN9540-00-406-7380
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Freecom SUPPORT,STRUCTURAL COMPONENT,AIR TITLE COMPONENT PN 31981 MFR Freecom SUPPORT,STRUCTURAL COM
KEY FEATURES
•
FIRST TIP INNER RADIUS: 0.045 INCHES NOMINAL IN
•
RIGHT SIDE TOP FLANGE THICKNESS: 0.120 INCHES NOMINAL IN
•
LENGTH: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
•
LEFT SIDE TOP FLANGE DISTANCE TO CENTER OF BOTH FLANGES: 0.750 INCHES NOMINAL IN
•
RIGHT TOP INSIDE ANGLE: 90.0 DEGREES NOMINAL
•
LEFT TOP INSIDE ANGLE: 90.0 DEGREES NOMINAL
•
HEAT TREATMENT: T-6 SOLUTION HEAT TREATED
TECHNICAL CHARACTERISTICS
FIRST TIP INNER RADIUS0.045 INCHES NOMINAL IN
OVERALL HEIGHT1.000 INCHES NOMINAL IN
RIGHT SIDE TOP FLANGE THICKNESS0.120 INCHES NOMINAL IN
LENGTH10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
LEFT SIDE TOP FLANGE DISTANCE TO CENTER OF BOTH FLANGES0.750 INCHES NOMINAL IN
RIGHT TOP INSIDE ANGLE90.0 DEGREES NOMINAL
LEFT TOP INSIDE ANGLE90.0 DEGREES NOMINAL
HEAT TREATMENTT-6 SOLUTION HEAT TREATED
FILLET RADIUS WHERE TOP RIGHT FLANGE JOINS WEB FLANGE/LEG0.120 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS-Q-A-200/11 FED SPEC SINGLE MATERIAL RESPONSE
SUBSTITUTES & CROSS-REFERENCES 8
LS3431-2Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
PA6572Reference document
Same NSN cross-reference
Reference document — Secondary reference
T5438Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
AMS-QQ-A-200/11Reference document
Same NSN cross-reference
Reference document — Secondary reference
QQ-A-200/11Reference document
Same NSN cross-reference
Reference document — Secondary reference
11458Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 31981?
31981 is a SUPPORT,STRUCTURAL COMPONENT,AIR manufactured by Freecom.
What parts can replace 31981?
There are 8 known substitutes for 31981: LS3431-2, PA6572, T5438 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 31981?
31981 is cataloged in the U.S. Government catalog under NSN 9540-00-406-7380. This indicates validated use in U.S. government and defense supply chains.
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