Model: 10-40-256

Socket Head Cap Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.337 inches
Fastener Length
0.750 inches
Head Style
Flat countersunk undercut
Head Diameter
0.225 inches
Head Height
0.313 inches
Internal Drive Style
Cross recess type ii
End Application
An/pas-13 (v) 2, (v) 3; sight, thermal for medium and heavy weapons
Thread Diameter
0.112 inches
Thready Qty Per Inch (tpi)
40
Countersink Angle
100.0 degrees
Part Name Assigned By Controlling Agency
Fastener, 4-40 x .313 x 100 degree fh, ss, blk oxide, w/ vibra-tite (phillips)
Color
Black
Material
Steel comp 302
Surface Treatment
Oxide
Surface Treatment Specification
Mil-dtl-13924, class 4 federal specification single treatment response
Thread Series Designator
Unc
NSN
5305-01-532-4740
Part Number
10-40-256
Description
Screw,cap,socket Head
CAGE
32865

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 10-40-256 NSN 5305-01-532-4740

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:
A
ESD:
A
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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