Model: NAS1191-4T8

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.398 inches and 0.500 inches
Fastener Length
Between 0.469 inches and 0.500 inches
Head Style
Flat chamfer
Head Diameter
Between 0.367 inches and 0.375 inches
Head Height
Between 0.133 inches and 0.150 inches
Locking Feature
Patch threads or pellet threads or strip threads
Internal Drive Style
Offset cruciform (torque set)
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
160000 pounds per square inch
Hardness Rating
36.0 rockwell c and 40.0 rockwell c
Surface Finish
32.0 microinches bearing surface of head
Surface Finish
32.0 microinches threads
Material
Steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 8735 or steel comp 6150
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416 type 2 class 2 federal specification single treatment response
Thread Series Designator
Unjf
Specification Data
80205-nas1191 professional/industrial association standard
NSN
5305-01-234-7556
Part Number
NAS1191-4T8
Description
Screw,cap,socket Head
CAGE
80205

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 NAS1191-4T8 NSN 5305-01-234-7556

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:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
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:
573
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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