Model: DRB7500-4-B-1

Panel Screw Assembly

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
1.000 inches
Fastener Length
1.000 inches
Head Style
Knurled no. 5
Head Diameter
0.325 inches
Head Height
0.437 inches
Internal Drive Style
Slot
Material Accommodated Thickness
0.286 inches
Thread Diameter
0.112 inches
Thready Qty Per Inch (tpi)
40
Part Name Assigned By Controlling Agency
Navy special project
Material
Aluminum alloy stand-off
Material
Stainless steel fastener
Material
Stainless steel spring
Material Specification
Astma493-80 assn standard single material response fastener or ams5636 assn standard single material response fastener
Material Specification
Qq-s-225/8 federal specification single material response stand-off or ams4117 assn standard single material response stand-off
Material Specification
Qq-v-423f5 federal specification single material response spring or ams5688 assn standard single material response spring
Surface Treatment
Passivate fastener
Surface Treatment Specification
Qq-p-35 federal specification single treatment response fastener
Thread Series Designator
Unc
NSN
5305-01-451-4713
Part Number
DRB7500-4-B-1
Description
Screw Assembly,panel
CAGE
0HDW7

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 DRB7500-4-B-1 NSN 5305-01-451-4713

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

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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