Model: NAS1081-4A8L

Setscrew

Properties:

Thread Class

Thread Direction

Right-hand

Fastener Length

Between 0.490 inches and 0.510 inches

Head Style

Headless (setscrew)

Point Diameter

Between 0.118 inches and 0.132 inches

Point Style

Flat

Internal Drive Style

Hexagon

Thread Diameter

0.250 inches

Width Across Flats

Between 0.125 inches and 0.127 inches

Thready Qty Per Inch (tpi)

Part Name Assigned By Controlling Agency

Screwset, self-locking

Material

Steel comp 4037 or steel comp 4137h or steel comp 8630 or steel comp 8740

Surface Treatment

Cadmium

Surface Treatment Specification

11-p-416, ty ii, cl 2 federal specification single treatment response

Thread Series Designator

Unjf

NSN

5305-01-499-1963

Part Number

NAS1081-4A8L

Description

Setscrew

CAGE

80205

An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. A locking feature may be incorporated in the design of the head or threads.

Part NAS1081-4A8L NSN 5305-01-499-1963

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

06672

FIIG:

A003B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

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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