Model: 3908-00044

Panel Screw Assembly

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.235 inches and 0.265 inches
Fastener Length
Between 0.480 inches and 0.520 inches
Head Style
Pan
Head Diameter
0.260 inches
Internal Drive Style
Cross recess type 1
Thread Diameter
0.138 inches
Thready Qty Per Inch (tpi)
32
Hardness Rating
35.0 rockwell c primary washer and 43.0 rockwell c primary washer
Part Name Assigned By Controlling Agency
Navy special project
Material
Aluminum alloy 7075 stand-off
Material
Steel comp 301 primary washer or steel comp 302 primary washer or steel comp 302b primary washer or steel comp 303 primary washer or steel comp 303cu primary washer or steel comp 303 plus x primary washer or steel comp 303f primary washer or steel comp 303ma primary washer or steel comp 303pb primary washer or steel comp 303se primary washer or steel comp 304 primary washer or steel comp 304l primary washer or steel comp 305 primary washer or steel comp 308 primary washer or steel comp 309 primary washer or steel comp 309s primary washer or steel comp 310 primary washer or steel comp 310s primary washer or steel comp 314 primary washer or steel comp 316 primary washer or steel comp 316l primary washer or steel comp 317 primary washer or steel comp 321 primary washer or steel comp 322 primary washer or steel comp 323 primary washer or steel comp 324 primary washer or steel comp 347 primary washer or steel comp 348 primary washer or steel comp 384 primary washer or steel comp 385 primary washer
Material
Steel comp 301 fastener or steel comp 302 fastener or steel comp 302b fastener or steel comp 303 fastener or steel comp 303se fastener or steel comp 304 fastener or steel comp 304l fastener or steel comp 305 fastener or steel comp 308 fastener or steel comp 309 fastener or steel comp 309s fastener or steel comp 310 fastener or steel comp 310s fastener or steel comp 314 fastener or steel comp 316 fastener or steel comp 316l fastener or steel comp 317 fastener or steel comp 321 fastener or steel comp 347 fastener or steel comp 348 fastener or steel comp 384 fastener or steel comp 385 fastener
Material
Steel comp 302 secondary washer
Material Specification
Mil-s-5059 military specification single material response secondary washer
Material Specification
Qq-a-225/9 federal specification single material response stand-off
Surface Treatment
Chromate stand-off
Surface Treatment
Passivate fastener
Surface Treatment
Passivate primary washer
Surface Treatment
Passivate secondary washer
Surface Treatment Specification
Mil-c-5541 cl 3 military specification single treatment response stand-off
Surface Treatment Specification
Qq-p-35 federal specification single treatment response fastener
Surface Treatment Specification
Qq-p-35 federal specification single treatment response primary washer
Surface Treatment Specification
Qq-p-35 federal specification single treatment response secondary washer
Thread Series Designator
Unc
NSN
5305-01-308-6053
Part Number
3908-00044
Description
Screw Assembly,panel
CAGE
K0656

A headed, threaded fastening device over which may be assembled; (1) a stand-off; (2) a flanged bushing with washer(s) and/or a shouldered bushing without a flange, or it may have an internally threaded sleeve that is an integral part of the screw; a washer and an externally thread self-locking bushing that is driven by an inserted driver. Attached to panel by threaded bushing or by flaring end of stand-off, or bushing. Used in conjunction with a speed nut, nut plate, or driven into a threaded hole in the item that the panel is fastened to. May be spring loaded.

Part 3908-00044 NSN 5305-01-308-6053

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
33044
FIIG:
A003B0
Concept No.:
App. Key:
SU
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
096640
UFC:
50600
LTL:
70.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7318152000
  • SITC: 69421
  • End Use: Iron and steel products, other
  • NAICS: 332722
  • USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment

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