Model: 642AS7549-4

Socket Head Cap Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.369 inches and 0.462 inches
Fastener Length
Between 0.531 inches and 0.562 inches
Head Style
Flat countersunk
Head Diameter
Between 0.292 inches and 0.332 inches
Locking Feature
Strip threads
Internal Drive Style
Slot
Thread Diameter
0.164 inches
Thready Qty Per Inch (tpi)
32
Countersink Angle
82.0 degrees
Material
Plastic locking feature
Material
Steel comp 302 fastener or steel comp 304 fastener or steel comp 303 fastener
Material Specification
Qq-s-763 federal specification 1st material response fastener or qq-s-763 federal specification 2nd material response fastener or astm a583 assn standard 3rd material response fastener
Surface Treatment
Passivate fastener
Surface Treatment Specification
Qq-p-35 federal specification single treatment response fastener
Thread Series Designator
Unc
NSN
5305-01-081-0741
Part Number
642AS7549-4
Description
Screw,cap,socket Head
CAGE
30003

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

Part 642AS7549-4 NSN 5305-01-081-0741

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16282
FIIG:
A003B0
Concept No.:
App. Key:
SC
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:
U
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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