Model: 2541989-1-4

Panel Screw Assembly

Special Features:

Straight knurl

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.375 inches
Fastener Length
0.562 inches
Head Style
Knurled no. 4
Head Diameter
0.500 inches
Head Height
0.188 inches
Internal Drive Style
Slot
Material Accommodated Thickness
Between 0.122 inches and 0.168 inches
Thread Diameter
0.164 inches
Thready Qty Per Inch (tpi)
32
Material
Steel comp 302 fastener
Material
Steel comp 302 stand-off
Material
Steel comp 302 spring
Surface Treatment
Passivate fastener
Surface Treatment
Passivate spring
Surface Treatment
Passivate 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 spring
Surface Treatment Specification
Qq-p-35 federal specification single treatment response stand-off
Thread Series Designator
Unc
NSN
5305-01-191-7499
Part Number
2541989-1-4
Description
Screw Assembly,panel
CAGE
10001

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 2541989-1-4 NSN 5305-01-191-7499

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:
093486
UFC:
48950
LTL:
RATING VARIABLE
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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