Model: 4-40UNCX3/8BHA

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.170 inches and 0.250 inches
Fastener Length
Between 0.220 inches and 0.250 inches
Head Style
Button
Head Diameter
Between 0.201 inches and 0.213 inches
Head Height
Between 0.051 inches and 0.059 inches
Internal Drive Style
Hexagon
Thread Diameter
0.112 inches
Width Across Flats
0.062 inches
Thready Qty Per Inch (tpi)
40
Min. Tensile Strength (psi)
180000 pounds per square inch
Hardness Rating
36.0 rockwell c and 45.0 rockwell c
Material
Steel comp 4037
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416 type 2, cl 3 federal specification single treatment response
Thread Series Designator
Unrc
NSN
5305-01-312-4953
Part Number
4-40UNCX3/8BHA
Description
Screw,cap,socket Head
CAGE
08664

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 4-40UNCX3/8BHA NSN 5305-01-312-4953

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:
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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