Model: 4-40-3A X 7/8 HEX SOCKET HD CRES

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.875 inches
Fastener Length
0.875 inches
Head Style
Knurled no. 1
Head Diameter
Between 0.176 inches and 0.183 inches
Head Height
Between 0.108 inches and 0.112 inches
Internal Drive Style
Hexagon
Thread Diameter
0.112 inches
Width Across Flats
Between 0.094 inches and 0.095 inches
Thready Qty Per Inch (tpi)
40
Min. Tensile Strength (psi)
80000 pounds per square inch
Hardness Rating
39.0 rockwell c and 45.0 rockwell c
Material
Steel comp 302 or steel comp 304 or steel comp 305 or steel comp 316 or steel comp 384
Material Specification
66 federal standard all material responses
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Supplementary Features
Fscm 80204-ansi b18.3 table 3 size 4
Thread Series Designator
Unc
Specification Data
81348-ff-s-86 government specification
Nondefinitive Specification/std Data
6 type and 4-40 size and 7/8in. Length and 3a class and unc series
NSN
5305-01-219-9600
Part Number
4-40-3A X 7/8 HEX SOCKET HD CRES
Description
Screw,cap,socket Head
CAGE
70318

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 4-40-3A X 7/8 HEX SOCKET HD CRES NSN 5305-01-219-9600

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

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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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