Model: NAS1142E9

Close Tolerance Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.276 inches
Fastener Length
Between 0.823 inches and 0.853 inches
Head Style
Pan
Head Diameter
Between 0.309 inches and 0.331 inches
Head Height
Between 0.088 inches and 0.102 inches
Grip Diameter
Between 0.1625 inches and 0.1635 inches
Internal Drive Style
Offset cruciform (torque set)
Thread Diameter
0.1640 inches
Grip Length
Between 0.552 inches and 0.572 inches
Thready Qty Per Inch (tpi)
32
Surface Finish
32.0 microinches bearing surface of head
Surface Finish
32.0 microinches grip
Surface Finish
32.0 microinches threads
Part Name Assigned By Controlling Agency
Screw, machine, pan head, modified, close tolerance, short thread, offset cruciform
Material
Iron alloy 660
Material Specification
Ams5731, 5732, 5737 or 5853 national std/spec single material response
Surface Treatment
Passivate
Surface Treatment Specification
Clean/passivate iaw qq-p-35 federal specification single treatment response
Thread Series Designator
Unjc
Specification Data
80205-nas1141 through 1148 professional/industrial association standard
NSN
5305-01-622-9665
Part Number
NAS1142E9
Description
Screw,close Tolerance
CAGE

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

Part NAS1142E9 NSN 5305-01-622-9665

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29294
FIIG:
A003B0
Concept No.:
App. Key:
SS
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

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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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